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changed behavior of rand_seed in BRSA #239

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merged 33 commits into from Jul 13, 2017

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lcnature commented Jul 13, 2017

Per request by @mshvartsman, rand_seed argument now defaults to None, and BRSA won't reset random seed if None is provided.
The suppression of warning is also removed.

lcnature and others added some commits Sep 2, 2016

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Mingbo Cai
@mihaic

We now have guidelines on using random numbers:
https://github.com/IntelPNI/brainiak/blob/master/CONTRIBUTING.rst#standards

Therefore, all new commits should conform to the standard. Specifically, you should not use numpy.random.random(); you should use numpy.random.RandomState.

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lcnature Jul 13, 2017

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Hi @mihaic Sorry I am a bit confused. How should numpy.random.RandomState replace numpy.random.random()? I thought the former sets the state while the latter just return a random number.
Thanks!

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lcnature commented Jul 13, 2017

Hi @mihaic Sorry I am a bit confused. How should numpy.random.RandomState replace numpy.random.random()? I thought the former sets the state while the latter just return a random number.
Thanks!

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Does that mean I should call this random_state = check_random_state(random_state), and from then on, replace all np.random with random_state?

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lcnature commented Jul 13, 2017

Does that mean I should call this random_state = check_random_state(random_state), and from then on, replace all np.random with random_state?

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mihaic Jul 13, 2017

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RandomState objects also have several methods for generating random numbers. RandomState.random_sample() is a good replacement for numpy.random.random():
https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.RandomState.random_sample.html

You do not need to use check_random_state.

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mihaic commented Jul 13, 2017

RandomState objects also have several methods for generating random numbers. RandomState.random_sample() is a good replacement for numpy.random.random():
https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.RandomState.random_sample.html

You do not need to use check_random_state.

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lcnature Jul 13, 2017

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Please see if the new commit is correct. Thanks!

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lcnature commented Jul 13, 2017

Please see if the new commit is correct. Thanks!

@@ -686,7 +688,7 @@ def _fit_RSA_UV(self, X, Y, X0,
n_C = np.size(X, axis=1)
l_idx = np.tril_indices(n_C)
np.random.seed(self.rand_seed)
self.random_state_ = check_random_state(self.random_state)

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mihaic Jul 13, 2017

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Please document this attribute in the class docstring. Could be something like this:

random_state_: `RandomState`
    Random number generator initialized using random_state
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mihaic Jul 13, 2017

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Please document this attribute in the class docstring. Could be something like this:

random_state_: `RandomState`
    Random number generator initialized using random_state

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lcnature Jul 13, 2017

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Thanks. Just added exactly this text.

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lcnature Jul 13, 2017

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Thanks. Just added exactly this text.

Mingbo Cai
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mihaic approved these changes Jul 13, 2017

@mihaic mihaic merged commit e230a01 into brainiak:master Jul 13, 2017

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@lcnature lcnature deleted the lcnature:fix_rng branch Aug 10, 2017

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