Python p.ravel question

Applications Programming
1

Hi,

I'm trying to decipher some python code located here:
Minimal character-level language model with a Vanilla Recurrent Neural Network, in Python/numpy * GitHub

I'm unable to understand what line 75 is doing?

ix = np.random.choice(range(vocab_size), p=p.ravel())

Anyone know what this might mean? I've looked at the documentation for p.ravel located here:

numpy.ravel � NumPy v1.13 Manual

and I still feel lost !

Could anyone explain this to me in layman terms, I'm no expert in programming or math.

2

I've never used numpy but it looks as though the ravel function is flattening an n-dimensional array into a 1D array such that

p = [ [a, b, c] [d, e, f] [g, h, i] ]
p.ravel()
[ a, b, c, d, e, f, g, h, i ]

Without reading up on numpy, is it possible that

ix = np.random.choice(range(vocab_size), p=p.ravel())

returns a list of vocab_size elements taken at random from p into ix ?

1 Like
3

hmm...could be