Top "Classification" questions

In machine learning and statistics, classification is the problem of identifying which of a set of categories a new observation belongs to, on the basis of a training set of data containing observations whose category membership (label) is known.

What is the difference between a sigmoid followed by the cross entropy and sigmoid_cross_entropy_with_logits in TensorFlow?

When trying to get cross-entropy with sigmoid activation function, there is a difference between loss1 = -tf.reduce_sum(p*tf.…

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Multi-class classification in libsvm

I'm working with libsvm and I must implement the classification for multiclasses with one versus all. How can I do …

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Higher validation accuracy, than training accurracy using Tensorflow and Keras

I'm trying to use deep learning to predict income from 15 self reported attributes from a dating site. We're getting rather …

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how to implement tensorflow's next_batch for own data

In the tensorflow MNIST tutorial the mnist.train.next_batch(100) function comes very handy. I am now trying to implement …

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Different decision tree algorithms with comparison of complexity or performance

I am doing research on data mining and more precisely, decision trees. I would like to know if there are …

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Plotting learning curve in keras gives KeyError: 'val_acc'

I was trying to plot train and test learning curve in keras, however, the following code produces KeyError: 'val_acc …

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KNN classification with categorical data

I'm busy working on a project involving k-nearest neighbour regression. I have mixed numerical and categorical fields. The categorical values …

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What is the difference between classification and prediction?

What is the difference between classification and prediction in machine learning?

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How to read data into TensorFlow batches from example queue?

How do I get TensorFlow example queues into proper batches for training? I've got some images and labels: IMG_6642.JPG 1 …

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Unbalanced classification using RandomForestClassifier in sklearn

I have a dataset where the classes are unbalanced. The classes are either '1' or '0' where the …

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