skip-gram model with TensorFlow

Now that we have training and validation data prepared, let's create a skip-gram model in TensorFlow.

We start by defining the hyper-parameters:

batch_size = 128
embedding_size = 128
skip_window = 2
n_negative_samples = 64
ptb.skip_window=2
learning_rate = 1.0

• The batch_size is the number of pairs of target and context words to be fed into the algorithms in a single batch
• The embedding_size is the dimension of the word vector or embedding for each word
• The ptb.skip_window is the number of words to be considered in the context of the target words in both directions
• The n_negative_samples is the number of negative samples to be generated by the NCE loss function, explained further in this chapter

In some tutorials, including the one in the TensorFlow documentation, one more parameter num_skips is used. In such tutorials, the authors pick the num_skips...