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.

Why use softmax only in the output layer and not in hidden layers?

Most examples of neural networks for classification tasks I've seen use the a softmax layer as output activation function. Normally, …

machine-learning neural-network classification softmax activation-function
Keras Classification - Object Detection

I am working on a classification then object detection with Keras and Python. I have classified cats/dogs with 80%+ accuracy, …

python classification keras object-detection
How to best implement K-nearest neighbours in C# for large number of dimensions?

I'm implementing the K-nearest neighbours classification algorithm in C# for a training and testing set of about 20,000 samples each, and 25 …

c# optimization classification knn
Neural networks for email spam detection

Let's say you have access to an email account with the history of received emails from the last years (~10k …

machine-learning neural-network classification spam-prevention
ROC curve for a binary classifier in MATLAB

I have a binary classifier, which classifies an input X as class zero if its predicted value is below some …

matlab classification roc
Are GAN's unsupervised or supervised?

I hear from some sources that Generative adversarial networks are unsupervised ML, but i dont get it. Are Generative adversarial …

machine-learning neural-network classification
Recognise an arbitrary date string

I need to be able to recognise date strings. It doesn't matter if I can not distinguish between month and …

java date classification
How to compute accuracy of CNN in TensorFlow

I am new to TensorFlow. I am doing a binary classification with my own dataset. However I do not know …

tensorflow classification convolution
Is Stochastic gradient descent a classifier or an optimizer?

I am new to Machine Learning and I am trying analyze the classification algorithm for a project of mine. I …

machine-learning scikit-learn classification gradient-descent
Java text classification problem

I have a set of Books objects, classs Book is defined as following : Class Book{ String title; ArrayList<tags&…

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