Mercurial > pylearn
annotate noise.py @ 514:a4d34dad3083
merged
author | James Bergstra <bergstrj@iro.umontreal.ca> |
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date | Fri, 31 Oct 2008 11:08:25 -0400 |
parents | 643dbccde1fc |
children |
rev | line source |
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414 | 1 def binomial(input, rstate, p = 0.75): |
2 """ | |
3 Op to corrupt an input with binomial noise. | |
4 Generate a noise vector of 1's and 0's (1 with probability p). | |
5 We multiply this by the input. | |
6 | |
7 @note: See U{ssh://projects@lgcm.iro.umontreal.ca/repos/denoising_aa} | |
8 to see how rstate is used. | |
9 """ | |
10 noise = rstate.gen_like(('binomial',{'p': p, 'n': 1}), input) | |
11 noise.name = 'noise' | |
12 return noise * input | |
13 |