[Introduction to machine learning] Li Hongyi Machine Learning notes-9 ("Hello World" of deep learning; probe into depth learning) __ Machine learning

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Author: User

[Introduction to machine learning] Li Hongyi Machine Learning notes-9 ("Hello World" of deep learning; exploring deep learning)


Example application-handwriting Digit recognition

Step 1:define A set of function

Step 2:goodness of function

Step 3:pick the best function

X_train, Y_train

Batch_size & Epoch


speed-why Mini-batch is faster than stochastic gradient?

For the GPU, let it do the two operations, the time spent is almost the same, in the matrix multiplication of each element, can be parallel operation, so the above time will become twice times below, so the gpu+mini-batch will greatly improve efficiency. Shuffle The training examples for each epoch


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