{"id":149,"date":"2020-08-31T03:06:54","date_gmt":"2020-08-31T03:06:54","guid":{"rendered":"https:\/\/machine-learning.webcloning.com\/2020\/08\/31\/multi-label-classification-with-deep-learning\/"},"modified":"2020-08-31T03:06:54","modified_gmt":"2020-08-31T03:06:54","slug":"multi-label-classification-with-deep-learning","status":"publish","type":"post","link":"https:\/\/salarydistribution.com\/machine-learning\/2020\/08\/31\/multi-label-classification-with-deep-learning\/","title":{"rendered":"Multi-Label Classification with Deep Learning"},"content":{"rendered":"<div id=\"\">\n<p id=\"last-modified-info\">Last Updated on August 31, 2020<\/p>\n<p>Multi-label classification involves predicting zero or more class labels.<\/p>\n<p>Unlike normal classification tasks where class labels are mutually exclusive, multi-label classification requires specialized machine learning algorithms that support predicting multiple mutually non-exclusive classes or \u201clabels.\u201d<\/p>\n<p>Deep learning neural networks are an example of an algorithm that natively supports multi-label classification problems. Neural network models for multi-label classification tasks can be easily defined and evaluated using the Keras deep learning library.<\/p>\n<p>In this tutorial, you will discover how to develop deep learning models for multi-label classification.<\/p>\n<p>After completing this tutorial, you will know:<\/p>\n<ul>\n<li>Multi-label classification is a predictive modeling task that involves predicting zero or more mutually non-exclusive class labels.<\/li>\n<li>Neural network models can be configured for multi-label classification tasks.<\/li>\n<li>How to evaluate a neural network for multi-label classification and make a prediction for new data.<\/li>\n<\/ul>\n<p>Let\u2019s get started.<\/p>\n<div id=\"attachment_10439\" class=\"wp-caption aligncenter\">\n<img decoding=\"async\" aria-describedby=\"caption-attachment-10439\" loading=\"lazy\" class=\"size-full wp-image-10439\" src=\"https:\/\/3qeqpr26caki16dnhd19sv6by6v-wpengine.netdna-ssl.com\/wp-content\/uploads\/2020\/06\/Multi-Label-Classification-with-Deep-Learning.jpg\" alt=\"Multi-Label Classification with Deep Learning\" width=\"800\" height=\"600\"><\/p>\n<p id=\"caption-attachment-10439\" class=\"wp-caption-text\">Multi-Label Classification with Deep Learning<br \/>Photo by <a href=\"https:\/\/flickr.com\/photos\/141333312@N03\/26888851517\/\">Trevor Marron<\/a>, some rights reserved.<\/p>\n<\/div>\n<h2>Tutorial Overview<\/h2>\n<p>This tutorial is divided into three parts; they are:<\/p>\n<ul>\n<li>Multi-Label Classification<\/li>\n<li>Neural Networks for Multiple Labels<\/li>\n<li>Neural Network for Multi-Label Classification<\/li>\n<\/ul>\n<h2>Multi-Label Classification<\/h2>\n<p>Classification is a predictive modeling problem that involves outputting a class label given some input<\/p>\n<p>It is different from regression tasks that involve predicting a numeric value.<\/p>\n<p>Typically, a classification task involves predicting a single label. Alternately, it might involve predicting the likelihood across two or more class labels. In these cases, the classes are mutually exclusive, meaning the classification task assumes that the input belongs to one class only.<\/p>\n<p>Some classification tasks require predicting more than one class label. This means that class labels or class membership are not mutually exclusive. These tasks are referred to as <strong>multiple label classification<\/strong>, or multi-label classification for short.<\/p>\n<p>In multi-label classification, zero or more labels are required as output for each input sample, and the outputs are required simultaneously. The assumption is that the output labels are a function of the inputs.<\/p>\n<p>We can create a synthetic multi-label classification dataset using the <a href=\"https:\/\/scikit-learn.org\/stable\/modules\/generated\/sklearn.datasets.make_multilabel_classification.html\">make_multilabel_classification() function<\/a> in the scikit-learn library.<\/p>\n<p>Our dataset will have 1,000 samples with 10 input features. The dataset will have three class label outputs for each sample and each class will have one or two values (0 or 1, e.g. present or not present).<\/p>\n<p>The complete example of creating and summarizing the synthetic multi-label classification dataset is listed below.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538bc972412627\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n# example of a multi-label classification task<br \/>\nfrom sklearn.datasets import make_multilabel_classification<br \/>\n# define dataset<br \/>\nX, y = make_multilabel_classification(n_samples=1000, n_features=10, n_classes=3, n_labels=2, random_state=1)<br \/>\n# summarize dataset shape<br \/>\nprint(X.shape, y.shape)<br \/>\n# summarize first few examples<br \/>\nfor i in range(10):<br \/>\n\tprint(X[i], y[i])<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p><span class=\"crayon-p\"># example of a multi-label classification task<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">sklearn<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">datasets <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-v\">make_multilabel<\/span><span class=\"crayon-sy\">_<\/span>classification<\/p>\n<p><span class=\"crayon-p\"># define dataset<\/span><\/p>\n<p><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">make_multilabel_classification<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_samples<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">1000<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_features<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">10<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_classes<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">3<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_labels<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">2<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">random_state<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-p\"># summarize dataset shape<\/span><\/p>\n<p><span class=\"crayon-e\">print<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-v\">shape<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-v\">shape<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-p\"># summarize first few examples<\/span><\/p>\n<p><span class=\"crayon-st\">for<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-i\">i<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-st\">in<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">range<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-cn\">10<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-e\">print<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">i<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">i<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0004 seconds] --><\/p>\n<p>Running the example creates the dataset and summarizes the shape of the input and output elements.<\/p>\n<p>We can see that, as expected, there are 1,000 samples, each with 10 input features and three output features.<\/p>\n<p>The first 10 rows of inputs and outputs are summarized and we can see that all inputs for this dataset are numeric and that output class labels have 0 or 1 values for each of the three class labels.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538c0950287872\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n(1000, 10) (1000, 3)<\/p>\n<p>[ 3.  3.  6.  7.  8.  2. 11. 11.  1.  3.] [1 1 0]<br \/>\n[7. 6. 4. 4. 6. 8. 3. 4. 6. 4.] [0 0 0]<br \/>\n[ 5.  5. 13.  7.  6.  3.  6. 11.  4.  2.] [1 1 0]<br \/>\n[1. 1. 5. 5. 7. 3. 4. 6. 4. 4.] [1 1 1]<br \/>\n[ 4.  2.  3. 13.  7.  2.  4. 12.  1.  7.] [0 1 0]<br \/>\n[ 4.  3.  3.  2.  5.  2.  3.  7.  2. 10.] [0 0 0]<br \/>\n[ 3.  3.  3. 11.  6.  3.  4. 14.  1.  3.] [0 1 0]<br \/>\n[ 2.  1.  7.  8.  4.  5. 10.  4.  6.  6.] [1 1 1]<br \/>\n[ 5.  1.  9.  5.  3.  4. 11.  8.  1.  8.] [1 1 1]<br \/>\n[ 2. 11.  7.  6.  2.  2.  9. 11.  9.  3.] [1 1 1]<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<div class=\"urvanov-syntax-highlighter-nums-content\">\n<p>1<\/p>\n<p>2<\/p>\n<p>3<\/p>\n<p>4<\/p>\n<p>5<\/p>\n<p>6<\/p>\n<p>7<\/p>\n<p>8<\/p>\n<p>9<\/p>\n<p>10<\/p>\n<p>11<\/p>\n<p>12<\/p>\n<\/div>\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p>(1000, 10) (1000, 3)<\/p>\n<p>\u00a0<\/p>\n<p>[ 3.\u00a0\u00a03.\u00a0\u00a06.\u00a0\u00a07.\u00a0\u00a08.\u00a0\u00a02. 11. 11.\u00a0\u00a01.\u00a0\u00a03.] [1 1 0]<\/p>\n<p>[7. 6. 4. 4. 6. 8. 3. 4. 6. 4.] [0 0 0]<\/p>\n<p>[ 5.\u00a0\u00a05. 13.\u00a0\u00a07.\u00a0\u00a06.\u00a0\u00a03.\u00a0\u00a06. 11.\u00a0\u00a04.\u00a0\u00a02.] [1 1 0]<\/p>\n<p>[1. 1. 5. 5. 7. 3. 4. 6. 4. 4.] [1 1 1]<\/p>\n<p>[ 4.\u00a0\u00a02.\u00a0\u00a03. 13.\u00a0\u00a07.\u00a0\u00a02.\u00a0\u00a04. 12.\u00a0\u00a01.\u00a0\u00a07.] [0 1 0]<\/p>\n<p>[ 4.\u00a0\u00a03.\u00a0\u00a03.\u00a0\u00a02.\u00a0\u00a05.\u00a0\u00a02.\u00a0\u00a03.\u00a0\u00a07.\u00a0\u00a02. 10.] [0 0 0]<\/p>\n<p>[ 3.\u00a0\u00a03.\u00a0\u00a03. 11.\u00a0\u00a06.\u00a0\u00a03.\u00a0\u00a04. 14.\u00a0\u00a01.\u00a0\u00a03.] [0 1 0]<\/p>\n<p>[ 2.\u00a0\u00a01.\u00a0\u00a07.\u00a0\u00a08.\u00a0\u00a04.\u00a0\u00a05. 10.\u00a0\u00a04.\u00a0\u00a06.\u00a0\u00a06.] [1 1 1]<\/p>\n<p>[ 5.\u00a0\u00a01.\u00a0\u00a09.\u00a0\u00a05.\u00a0\u00a03.\u00a0\u00a04. 11.\u00a0\u00a08.\u00a0\u00a01.\u00a0\u00a08.] [1 1 1]<\/p>\n<p>[ 2. 11.\u00a0\u00a07.\u00a0\u00a06.\u00a0\u00a02.\u00a0\u00a02.\u00a0\u00a09. 11.\u00a0\u00a09.\u00a0\u00a03.] [1 1 1]<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0000 seconds] --><\/p>\n<p>Next, let\u2019s look at how we can develop neural network models for multi-label classification tasks.<\/p>\n<h2>Neural Networks for Multiple Labels<\/h2>\n<p>Some machine learning algorithms support multi-label classification natively.<\/p>\n<p>Neural network models can be configured to support multi-label classification and can perform well, depending on the specifics of the classification task.<\/p>\n<p>Multi-label classification can be supported directly by neural networks simply by specifying the number of target labels there is in the problem as the number of nodes in the output layer. For example, a task that has three output labels (classes) will require a neural network output layer with three nodes in the output layer.<\/p>\n<p>Each node in the output layer must use the sigmoid activation. This will predict a probability of class membership for the label, a value between 0 and 1. Finally, the model must be fit with the <a href=\"https:\/\/machinelearningmastery.com\/cross-entropy-for-machine-learning\/\">binary cross-entropy loss function<\/a>.<\/p>\n<p>In summary, to configure a neural network model for multi-label classification, the specifics are:<\/p>\n<ul>\n<li>Number of nodes in the output layer matches the number of labels.<\/li>\n<li>Sigmoid activation for each node in the output layer.<\/li>\n<li>Binary cross-entropy loss function.<\/li>\n<\/ul>\n<p>We can demonstrate this using the Keras deep learning library.<\/p>\n<p>We will define a Multilayer Perceptron (MLP) model for the multi-label classification task defined in the previous section.<\/p>\n<p>Each sample has 10 inputs and three outputs; therefore, the network requires an input layer that expects 10 inputs specified via the \u201c<em>input_dim<\/em>\u201d argument in the first hidden layer and three nodes in the output layer.<\/p>\n<p>We will use the popular <a href=\"https:\/\/machinelearningmastery.com\/rectified-linear-activation-function-for-deep-learning-neural-networks\/\">ReLU activation function<\/a> in the hidden layer. The hidden layer has 20 nodes that were chosen after some trial and error. We will fit the model using binary cross-entropy loss and the Adam version of stochastic gradient descent.<\/p>\n<p>The definition of the network for the multi-label classification task is listed below.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538c2121514216\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n# define the model<br \/>\nmodel = Sequential()<br \/>\nmodel.add(Dense(20, input_dim=n_inputs, kernel_initializer=&#8217;he_uniform&#8217;, activation=&#8217;relu&#8217;))<br \/>\nmodel.add(Dense(n_outputs, activation=&#8217;sigmoid&#8217;))<br \/>\nmodel.compile(loss=&#8217;binary_crossentropy&#8217;, optimizer=&#8217;adam&#8217;)<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p><span class=\"crayon-p\"># define the model<\/span><\/p>\n<p><span class=\"crayon-v\">model<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">Sequential<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">add<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">Dense<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-cn\">20<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">input_dim<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">kernel_initializer<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;he_uniform&#8217;<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">activation<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;relu&#8217;<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">add<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">Dense<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">activation<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;sigmoid&#8217;<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">compile<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">loss<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;binary_crossentropy&#8217;<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">optimizer<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;adam&#8217;<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0003 seconds] --><\/p>\n<p>You may want to adapt this model for your own multi-label classification task; therefore, we can create a function to define and return the model where the number of input and output variables is provided as arguments.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538c4420952928\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n# get the model<br \/>\ndef get_model(n_inputs, n_outputs):<br \/>\n\tmodel = Sequential()<br \/>\n\tmodel.add(Dense(20, input_dim=n_inputs, kernel_initializer=&#8217;he_uniform&#8217;, activation=&#8217;relu&#8217;))<br \/>\n\tmodel.add(Dense(n_outputs, activation=&#8217;sigmoid&#8217;))<br \/>\n\tmodel.compile(loss=&#8217;binary_crossentropy&#8217;, optimizer=&#8217;adam&#8217;)<br \/>\n\treturn model<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p><span class=\"crayon-p\"># get the model<\/span><\/p>\n<p><span class=\"crayon-e\">def <\/span><span class=\"crayon-e\">get_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">Sequential<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">add<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">Dense<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-cn\">20<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">input_dim<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">kernel_initializer<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;he_uniform&#8217;<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">activation<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;relu&#8217;<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">add<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">Dense<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">activation<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;sigmoid&#8217;<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">compile<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">loss<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;binary_crossentropy&#8217;<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">optimizer<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;adam&#8217;<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">return<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">model<\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0003 seconds] --><\/p>\n<p>Now that we are familiar with how to define an MLP for multi-label classification, let\u2019s explore how this model can be evaluated.<\/p>\n<h2>Neural Network for Multi-Label Classification<\/h2>\n<p>If the dataset is small, it is good practice to evaluate neural network models repeatedly on the same dataset and report the mean performance across the repeats.<\/p>\n<p>This is because of the stochastic nature of the learning algorithm.<\/p>\n<p>Additionally, it is good practice to use <a href=\"https:\/\/machinelearningmastery.com\/k-fold-cross-validation\/\">k-fold cross-validation<\/a> instead of train\/test splits of a dataset to get an unbiased estimate of model performance when making predictions on new data. Again, only if there is not too much data that the process can be completed in a reasonable time.<\/p>\n<p>Taking this into account, we will evaluate the MLP model on the multi-output regression task using repeated k-fold cross-validation with 10 folds and three repeats.<\/p>\n<p>The MLP model will predict the probability for each class label by default. This means it will predict three probabilities for each sample. These can be converted to crisp class labels by rounding the values to either 0 or 1. We can then calculate the classification accuracy for the crisp class labels.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538c5418599381\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n&#8230;<br \/>\n# make a prediction on the test set<br \/>\nyhat = model.predict(X_test)<br \/>\n# round probabilities to class labels<br \/>\nyhat = yhat.round()<br \/>\n# calculate accuracy<br \/>\nacc = accuracy_score(y_test, yhat)<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p><span class=\"crayon-sy\">.<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-sy\">.<\/span><\/p>\n<p><span class=\"crayon-p\"># make a prediction on the test set<\/span><\/p>\n<p><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">predict<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X_test<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-p\"># round probabilities to class labels<\/span><\/p>\n<p><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">round<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-p\"># calculate accuracy<\/span><\/p>\n<p><span class=\"crayon-v\">acc<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">accuracy_score<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">y_test<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0002 seconds] --><\/p>\n<p>The scores are collected and can be summarized by reporting the mean and standard deviation across all repeats and cross-validation folds.<\/p>\n<p>The <em>evaluate_model()<\/em> function below takes the dataset, evaluates the model, and returns a list of evaluation scores, in this case, accuracy scores.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538c6659071801\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n# evaluate a model using repeated k-fold cross-validation<br \/>\ndef evaluate_model(X, y):<br \/>\n\tresults = list()<br \/>\n\tn_inputs, n_outputs = X.shape[1], y.shape[1]<br \/>\n\t# define evaluation procedure<br \/>\n\tcv = RepeatedKFold(n_splits=10, n_repeats=3, random_state=1)<br \/>\n\t# enumerate folds<br \/>\n\tfor train_ix, test_ix in cv.split(X):<br \/>\n\t\t# prepare data<br \/>\n\t\tX_train, X_test = X[train_ix], X[test_ix]<br \/>\n\t\ty_train, y_test = y[train_ix], y[test_ix]<br \/>\n\t\t# define model<br \/>\n\t\tmodel = get_model(n_inputs, n_outputs)<br \/>\n\t\t# fit model<br \/>\n\t\tmodel.fit(X_train, y_train, verbose=0, epochs=100)<br \/>\n\t\t# make a prediction on the test set<br \/>\n\t\tyhat = model.predict(X_test)<br \/>\n\t\t# round probabilities to class labels<br \/>\n\t\tyhat = yhat.round()<br \/>\n\t\t# calculate accuracy<br \/>\n\t\tacc = accuracy_score(y_test, yhat)<br \/>\n\t\t# store result<br \/>\n\t\tprint(&#8216;&gt;%.3f&#8217; % acc)<br \/>\n\t\tresults.append(acc)<br \/>\n\treturn results<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<div class=\"urvanov-syntax-highlighter-nums-content\">\n<p>1<\/p>\n<p>2<\/p>\n<p>3<\/p>\n<p>4<\/p>\n<p>5<\/p>\n<p>6<\/p>\n<p>7<\/p>\n<p>8<\/p>\n<p>9<\/p>\n<p>10<\/p>\n<p>11<\/p>\n<p>12<\/p>\n<p>13<\/p>\n<p>14<\/p>\n<p>15<\/p>\n<p>16<\/p>\n<p>17<\/p>\n<p>18<\/p>\n<p>19<\/p>\n<p>20<\/p>\n<p>21<\/p>\n<p>22<\/p>\n<p>23<\/p>\n<p>24<\/p>\n<p>25<\/p>\n<\/div>\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p><span class=\"crayon-p\"># evaluate a model using repeated k-fold cross-validation<\/span><\/p>\n<p><span class=\"crayon-e\">def <\/span><span class=\"crayon-e\">evaluate_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">results<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">list<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-v\">shape<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-v\">shape<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">]<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-p\"># define evaluation procedure<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">cv<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">RepeatedKFold<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_splits<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">10<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_repeats<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">3<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">random_state<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-p\"># enumerate folds<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">for<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">train_ix<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">test_ix <\/span><span class=\"crayon-st\">in<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">cv<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">split<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># prepare data<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">X_train<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X_test<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">train_ix<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">test_ix<\/span><span class=\"crayon-sy\">]<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">y_train<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y_test<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">train_ix<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">test_ix<\/span><span class=\"crayon-sy\">]<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># define model<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">get_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># fit model<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">fit<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X_train<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y_train<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">verbose<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">0<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">epochs<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">100<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># make a prediction on the test set<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">predict<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X_test<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># round probabilities to class labels<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">round<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># calculate accuracy<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">acc<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">accuracy_score<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">y_test<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># store result<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-e\">print<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-s\">&#8216;&gt;%.3f&#8217;<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">%<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">acc<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">results<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">append<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">acc<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">return<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">results<\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0010 seconds] --><\/p>\n<p>We can then load our dataset and evaluate the model and report the mean performance.<\/p>\n<p>Tying this together, the complete example is listed below.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538c8557483724\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n# mlp for multi-label classification<br \/>\nfrom numpy import mean<br \/>\nfrom numpy import std<br \/>\nfrom sklearn.datasets import make_multilabel_classification<br \/>\nfrom sklearn.model_selection import RepeatedKFold<br \/>\nfrom keras.models import Sequential<br \/>\nfrom keras.layers import Dense<br \/>\nfrom sklearn.metrics import accuracy_score<\/p>\n<p># get the dataset<br \/>\ndef get_dataset():<br \/>\n\tX, y = make_multilabel_classification(n_samples=1000, n_features=10, n_classes=3, n_labels=2, random_state=1)<br \/>\n\treturn X, y<\/p>\n<p># get the model<br \/>\ndef get_model(n_inputs, n_outputs):<br \/>\n\tmodel = Sequential()<br \/>\n\tmodel.add(Dense(20, input_dim=n_inputs, kernel_initializer=&#8217;he_uniform&#8217;, activation=&#8217;relu&#8217;))<br \/>\n\tmodel.add(Dense(n_outputs, activation=&#8217;sigmoid&#8217;))<br \/>\n\tmodel.compile(loss=&#8217;binary_crossentropy&#8217;, optimizer=&#8217;adam&#8217;)<br \/>\n\treturn model<\/p>\n<p># evaluate a model using repeated k-fold cross-validation<br \/>\ndef evaluate_model(X, y):<br \/>\n\tresults = list()<br \/>\n\tn_inputs, n_outputs = X.shape[1], y.shape[1]<br \/>\n\t# define evaluation procedure<br \/>\n\tcv = RepeatedKFold(n_splits=10, n_repeats=3, random_state=1)<br \/>\n\t# enumerate folds<br \/>\n\tfor train_ix, test_ix in cv.split(X):<br \/>\n\t\t# prepare data<br \/>\n\t\tX_train, X_test = X[train_ix], X[test_ix]<br \/>\n\t\ty_train, y_test = y[train_ix], y[test_ix]<br \/>\n\t\t# define model<br \/>\n\t\tmodel = get_model(n_inputs, n_outputs)<br \/>\n\t\t# fit model<br \/>\n\t\tmodel.fit(X_train, y_train, verbose=0, epochs=100)<br \/>\n\t\t# make a prediction on the test set<br \/>\n\t\tyhat = model.predict(X_test)<br \/>\n\t\t# round probabilities to class labels<br \/>\n\t\tyhat = yhat.round()<br \/>\n\t\t# calculate accuracy<br \/>\n\t\tacc = accuracy_score(y_test, yhat)<br \/>\n\t\t# store result<br \/>\n\t\tprint(&#8216;&gt;%.3f&#8217; % acc)<br \/>\n\t\tresults.append(acc)<br \/>\n\treturn results<\/p>\n<p># load dataset<br \/>\nX, y = get_dataset()<br \/>\n# evaluate model<br \/>\nresults = evaluate_model(X, y)<br \/>\n# summarize performance<br \/>\nprint(&#8216;Accuracy: %.3f (%.3f)&#8217; % (mean(results), std(results)))<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<div class=\"urvanov-syntax-highlighter-nums-content\">\n<p>1<\/p>\n<p>2<\/p>\n<p>3<\/p>\n<p>4<\/p>\n<p>5<\/p>\n<p>6<\/p>\n<p>7<\/p>\n<p>8<\/p>\n<p>9<\/p>\n<p>10<\/p>\n<p>11<\/p>\n<p>12<\/p>\n<p>13<\/p>\n<p>14<\/p>\n<p>15<\/p>\n<p>16<\/p>\n<p>17<\/p>\n<p>18<\/p>\n<p>19<\/p>\n<p>20<\/p>\n<p>21<\/p>\n<p>22<\/p>\n<p>23<\/p>\n<p>24<\/p>\n<p>25<\/p>\n<p>26<\/p>\n<p>27<\/p>\n<p>28<\/p>\n<p>29<\/p>\n<p>30<\/p>\n<p>31<\/p>\n<p>32<\/p>\n<p>33<\/p>\n<p>34<\/p>\n<p>35<\/p>\n<p>36<\/p>\n<p>37<\/p>\n<p>38<\/p>\n<p>39<\/p>\n<p>40<\/p>\n<p>41<\/p>\n<p>42<\/p>\n<p>43<\/p>\n<p>44<\/p>\n<p>45<\/p>\n<p>46<\/p>\n<p>47<\/p>\n<p>48<\/p>\n<p>49<\/p>\n<p>50<\/p>\n<p>51<\/p>\n<p>52<\/p>\n<p>53<\/p>\n<p>54<\/p>\n<\/div>\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p><span class=\"crayon-p\"># mlp for multi-label classification<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-e\">numpy <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">mean<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-e\">numpy <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">std<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">sklearn<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">datasets <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">make_multilabel_classification<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">sklearn<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">model_selection <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">RepeatedKFold<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">keras<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">models <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">Sequential<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">keras<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">layers <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">Dense<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">sklearn<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">metrics <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-v\">accuracy<\/span><span class=\"crayon-sy\">_<\/span>score<\/p>\n<p>\u00a0<\/p>\n<p><span class=\"crayon-p\"># get the dataset<\/span><\/p>\n<p><span class=\"crayon-e\">def <\/span><span class=\"crayon-e\">get_dataset<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">make_multilabel_classification<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_samples<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">1000<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_features<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">10<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_classes<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">3<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_labels<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">2<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">random_state<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">return<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-i\">y<\/span><\/p>\n<p>\u00a0<\/p>\n<p><span class=\"crayon-p\"># get the model<\/span><\/p>\n<p><span class=\"crayon-e\">def <\/span><span class=\"crayon-e\">get_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">Sequential<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">add<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">Dense<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-cn\">20<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">input_dim<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">kernel_initializer<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;he_uniform&#8217;<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">activation<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;relu&#8217;<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">add<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">Dense<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">activation<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;sigmoid&#8217;<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">compile<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">loss<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;binary_crossentropy&#8217;<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">optimizer<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;adam&#8217;<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">return<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-i\">model<\/span><\/p>\n<p>\u00a0<\/p>\n<p><span class=\"crayon-p\"># evaluate a model using repeated k-fold cross-validation<\/span><\/p>\n<p><span class=\"crayon-e\">def <\/span><span class=\"crayon-e\">evaluate_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">results<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">list<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-v\">shape<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-v\">shape<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">]<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-p\"># define evaluation procedure<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">cv<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">RepeatedKFold<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_splits<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">10<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_repeats<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">3<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">random_state<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-p\"># enumerate folds<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">for<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">train_ix<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">test_ix <\/span><span class=\"crayon-st\">in<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">cv<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">split<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># prepare data<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">X_train<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X_test<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">train_ix<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">test_ix<\/span><span class=\"crayon-sy\">]<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">y_train<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y_test<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">train_ix<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">test_ix<\/span><span class=\"crayon-sy\">]<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># define model<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">get_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># fit model<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">fit<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X_train<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y_train<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">verbose<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">0<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">epochs<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">100<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># make a prediction on the test set<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">predict<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X_test<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># round probabilities to class labels<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">round<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># calculate accuracy<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">acc<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">accuracy_score<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">y_test<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-p\"># store result<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-e\">print<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-s\">&#8216;&gt;%.3f&#8217;<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">%<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">acc<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t\t<\/span><span class=\"crayon-v\">results<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">append<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">acc<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">return<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-i\">results<\/span><\/p>\n<p>\u00a0<\/p>\n<p><span class=\"crayon-p\"># load dataset<\/span><\/p>\n<p><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">get_dataset<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-p\"># evaluate model<\/span><\/p>\n<p><span class=\"crayon-v\">results<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">evaluate_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-p\"># summarize performance<\/span><\/p>\n<p><span class=\"crayon-e\">print<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-s\">&#8216;Accuracy: %.3f (%.3f)&#8217;<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">%<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">mean<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">results<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">std<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">results<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0015 seconds] --><\/p>\n<p>Running the example reports the classification accuracy for each fold and each repeat, to give an idea of the evaluation progress.<\/p>\n<p><strong>Note<\/strong>: Your <a href=\"https:\/\/machinelearningmastery.com\/different-results-each-time-in-machine-learning\/\">results may vary<\/a> given the stochastic nature of the algorithm or evaluation procedure, or differences in numerical precision. Consider running the example a few times and compare the average outcome.<\/p>\n<p>At the end, the mean and standard deviation accuracy is reported. In this case, the model is shown to achieve an accuracy of about 81.2 percent.<\/p>\n<p>You can use this code as a template for evaluating MLP models on your own multi-label classification tasks. The number of nodes and layers in the model can easily be adapted and tailored to the complexity of your dataset.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538c9953055685\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n&#8230;<br \/>\n&gt;0.780<br \/>\n&gt;0.820<br \/>\n&gt;0.790<br \/>\n&gt;0.810<br \/>\n&gt;0.840<br \/>\nAccuracy: 0.812 (0.032)<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p>&#8230;<\/p>\n<p>&gt;0.780<\/p>\n<p>&gt;0.820<\/p>\n<p>&gt;0.790<\/p>\n<p>&gt;0.810<\/p>\n<p>&gt;0.840<\/p>\n<p>Accuracy: 0.812 (0.032)<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0000 seconds] --><\/p>\n<p>Once a model configuration is chosen, we can use it to fit a final model on all available data and make a prediction for new data.<\/p>\n<p>The example below demonstrates this by first fitting the MLP model on the entire multi-label classification dataset, then calling the <em>predict()<\/em> function on the saved model in order to make a prediction for a new row of data.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538ca907752555\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\n# use mlp for prediction on multi-label classification<br \/>\nfrom numpy import asarray<br \/>\nfrom sklearn.datasets import make_multilabel_classification<br \/>\nfrom keras.models import Sequential<br \/>\nfrom keras.layers import Dense<\/p>\n<p># get the dataset<br \/>\ndef get_dataset():<br \/>\n\tX, y = make_multilabel_classification(n_samples=1000, n_features=10, n_classes=3, n_labels=2, random_state=1)<br \/>\n\treturn X, y<\/p>\n<p># get the model<br \/>\ndef get_model(n_inputs, n_outputs):<br \/>\n\tmodel = Sequential()<br \/>\n\tmodel.add(Dense(20, input_dim=n_inputs, kernel_initializer=&#8217;he_uniform&#8217;, activation=&#8217;relu&#8217;))<br \/>\n\tmodel.add(Dense(n_outputs, activation=&#8217;sigmoid&#8217;))<br \/>\n\tmodel.compile(loss=&#8217;binary_crossentropy&#8217;, optimizer=&#8217;adam&#8217;)<br \/>\n\treturn model<\/p>\n<p># load dataset<br \/>\nX, y = get_dataset()<br \/>\nn_inputs, n_outputs = X.shape[1], y.shape[1]<br \/>\n# get model<br \/>\nmodel = get_model(n_inputs, n_outputs)<br \/>\n# fit the model on all data<br \/>\nmodel.fit(X, y, verbose=0, epochs=100)<br \/>\n# make a prediction for new data<br \/>\nrow = [3, 3, 6, 7, 8, 2, 11, 11, 1, 3]<br \/>\nnewX = asarray([row])<br \/>\nyhat = model.predict(newX)<br \/>\nprint(&#8216;Predicted: %s&#8217; % yhat[0])<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<div class=\"urvanov-syntax-highlighter-nums-content\">\n<p>1<\/p>\n<p>2<\/p>\n<p>3<\/p>\n<p>4<\/p>\n<p>5<\/p>\n<p>6<\/p>\n<p>7<\/p>\n<p>8<\/p>\n<p>9<\/p>\n<p>10<\/p>\n<p>11<\/p>\n<p>12<\/p>\n<p>13<\/p>\n<p>14<\/p>\n<p>15<\/p>\n<p>16<\/p>\n<p>17<\/p>\n<p>18<\/p>\n<p>19<\/p>\n<p>20<\/p>\n<p>21<\/p>\n<p>22<\/p>\n<p>23<\/p>\n<p>24<\/p>\n<p>25<\/p>\n<p>26<\/p>\n<p>27<\/p>\n<p>28<\/p>\n<p>29<\/p>\n<p>30<\/p>\n<p>31<\/p>\n<\/div>\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p><span class=\"crayon-p\"># use mlp for prediction on multi-label classification<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-e\">numpy <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">asarray<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">sklearn<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">datasets <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">make_multilabel_classification<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">keras<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">models <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-e\">Sequential<\/span><\/p>\n<p><span class=\"crayon-e\">from <\/span><span class=\"crayon-v\">keras<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">layers <\/span><span class=\"crayon-e\">import <\/span><span class=\"crayon-i\">Dense<\/span><\/p>\n<p>\u00a0<\/p>\n<p><span class=\"crayon-p\"># get the dataset<\/span><\/p>\n<p><span class=\"crayon-e\">def <\/span><span class=\"crayon-e\">get_dataset<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">make_multilabel_classification<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_samples<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">1000<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_features<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">10<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_classes<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">3<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_labels<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">2<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">random_state<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">return<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-i\">y<\/span><\/p>\n<p>\u00a0<\/p>\n<p><span class=\"crayon-p\"># get the model<\/span><\/p>\n<p><span class=\"crayon-e\">def <\/span><span class=\"crayon-e\">get_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-o\">:<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">Sequential<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">add<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">Dense<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-cn\">20<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">input_dim<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">kernel_initializer<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;he_uniform&#8217;<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">activation<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;relu&#8217;<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">add<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-e\">Dense<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">activation<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;sigmoid&#8217;<\/span><span class=\"crayon-sy\">)<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">compile<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">loss<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;binary_crossentropy&#8217;<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">optimizer<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-s\">&#8216;adam&#8217;<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-h\">\t<\/span><span class=\"crayon-st\">return<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-i\">model<\/span><\/p>\n<p>\u00a0<\/p>\n<p><span class=\"crayon-p\"># load dataset<\/span><\/p>\n<p><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">get_dataset<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-v\">shape<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-v\">shape<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">]<\/span><\/p>\n<p><span class=\"crayon-p\"># get model<\/span><\/p>\n<p><span class=\"crayon-v\">model<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">get_model<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">n_inputs<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">n_outputs<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-p\"># fit the model on all data<\/span><\/p>\n<p><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">fit<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">X<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">y<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">verbose<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">0<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">epochs<\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-cn\">100<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-p\"># make a prediction for new data<\/span><\/p>\n<p><span class=\"crayon-v\">row<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-cn\">3<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">3<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">6<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">7<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">8<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">2<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">11<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">11<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">1<\/span><span class=\"crayon-sy\">,<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-cn\">3<\/span><span class=\"crayon-sy\">]<\/span><\/p>\n<p><span class=\"crayon-v\">newX<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-e\">asarray<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-v\">row<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">=<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">model<\/span><span class=\"crayon-sy\">.<\/span><span class=\"crayon-e\">predict<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-v\">newX<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<p><span class=\"crayon-e\">print<\/span><span class=\"crayon-sy\">(<\/span><span class=\"crayon-s\">&#8216;Predicted: %s&#8217;<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-o\">%<\/span><span class=\"crayon-h\"> <\/span><span class=\"crayon-v\">yhat<\/span><span class=\"crayon-sy\">[<\/span><span class=\"crayon-cn\">0<\/span><span class=\"crayon-sy\">]<\/span><span class=\"crayon-sy\">)<\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0011 seconds] --><\/p>\n<p>Running the example fits the model and makes a prediction for a new row. As expected, the prediction contains three output variables required for the multi-label classification task: the probabilities of each class label.<\/p>\n<p><!-- Urvanov Syntax Highlighter v2.8.13 --><\/p>\n<div id=\"urvanov-syntax-highlighter-5f4c6853538cc401295365\" class=\"urvanov-syntax-highlighter-syntax crayon-theme-classic urvanov-syntax-highlighter-font-monaco urvanov-syntax-highlighter-os-pc print-yes notranslate\" data-settings=\" minimize scroll-mouseover\">\n<p><textarea class=\"urvanov-syntax-highlighter-plain print-no\" data-settings=\"dblclick\" readonly><br \/>\nPredicted: [0.9998627 0.9849341 0.00208042]<\/textarea><\/p>\n<div class=\"urvanov-syntax-highlighter-main\">\n<table class=\"crayon-table\">\n<tr class=\"urvanov-syntax-highlighter-row\">\n<td class=\"crayon-nums \" data-settings=\"show\">\n<\/td>\n<td class=\"urvanov-syntax-highlighter-code\">\n<div class=\"crayon-pre\">\n<p>Predicted: [0.9998627 0.9849341 0.00208042]<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<p><!-- [Format Time: 0.0000 seconds] --><\/p>\n<h2>Further Reading<\/h2>\n<p>This section provides more resources on the topic if you are looking to go deeper.<\/p>\n<h2>Summary<\/h2>\n<p>In this tutorial, you discovered how to develop deep learning models for multi-label classification.<\/p>\n<p>Specifically, you learned:<\/p>\n<ul>\n<li>Multi-label classification is a predictive modeling task that involves predicting zero or more mutually non-exclusive class labels.<\/li>\n<li>Neural network models can be configured for multi-label classification tasks.<\/li>\n<li>How to evaluate a neural network for multi-label classification and make a prediction for new data.<\/li>\n<\/ul>\n<p><strong>Do you have any questions?<\/strong><br \/>Ask your questions in the comments below and I will do my best to answer.<\/p>\n<div class=\"widget_text awac-wrapper\" id=\"custom_html-75\">\n<div class=\"widget_text awac widget custom_html-75\">\n<div class=\"textwidget custom-html-widget\">\n<div>\n<h2>Develop Deep Learning Projects with Python!<\/h2>\n<p><a href=\"\/deep-learning-with-python\/\" rel=\"nofollow\"><img decoding=\"async\" src=\"https:\/\/3qeqpr26caki16dnhd19sv6by6v-wpengine.netdna-ssl.com\/wp-content\/uploads\/2016\/05\/DeepLearningWithPython-220.png\" alt=\"Deep Learning with Python\" align=\"left\"><\/a><\/p>\n<h4>\u00a0What If You Could Develop A Network in Minutes<\/h4>\n<p>&#8230;with just a few lines of Python<\/p>\n<p>Discover how in my new Ebook: <br \/><a href=\"\/deep-learning-with-python\/\" rel=\"nofollow\">Deep Learning With Python<\/a><\/p>\n<p>It covers <strong>end-to-end projects<\/strong> on topics like:<br \/><em>Multilayer Perceptrons<\/em>,\u00a0<em>Convolutional Nets<\/em> and\u00a0<em>Recurrent Neural Nets<\/em>, and more&#8230;<\/p>\n<h4>Finally Bring Deep Learning To<br \/>Your Own Projects<\/h4>\n<p>Skip the Academics. Just\u00a0Results.<\/p>\n<p><a href=\"\/deep-learning-with-python\/\" class=\"woo-sc-button  red\"><span class=\"woo-\">See What&#8217;s Inside<\/span><\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/machinelearningmastery.com\/multi-label-classification-with-deep-learning\/<\/p>\n","protected":false},"author":0,"featured_media":150,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/posts\/149"}],"collection":[{"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/comments?post=149"}],"version-history":[{"count":0,"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/posts\/149\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/media\/150"}],"wp:attachment":[{"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/media?parent=149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/categories?post=149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/salarydistribution.com\/machine-learning\/wp-json\/wp\/v2\/tags?post=149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}