view algorithms/tests/test_stacker.py @ 490:4f3c66146f17

Moved weights.py out of sandbox
author Joseph Turian <turian@gmail.com>
date Tue, 28 Oct 2008 10:54:26 -0400
parents 8fcd0f3d9a17
children
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import models
import theano
import numpy
import time


def test_train(mode = theano.Mode('c|py', 'fast_run')):

    reg = models.Stacker([(models.BinRegressor, 'output'), (models.BinRegressor, 'output')],
                         regularize = False)
    #print reg.global_update[1].pretty(mode = mode.excluding('inplace'))

    model = reg.make([100, 200, 1],
                     lr = 0.01,
                     mode = mode,
                     seed = 10)

    R = numpy.random.RandomState(100)
    t1 = time.time()
    for i in xrange(1001):
        data = R.random_integers(0, 1, size = (10, 100))
        targets = data[:, 6].reshape((10, 1))
        cost = model.update(data, targets)
        if i % 100 == 0:
            print i, '\t', cost, '\t', 1*(targets.T == model.classify(data).T)
    t2 = time.time()
    return t2 - t1

if __name__ == '__main__':
    print 'optimized:'
    t1 = test_train(theano.Mode('c|py', 'fast_run'))
    print 'time:',t1
    print

    print 'not optimized:'
    t2 = test_train(theano.Mode('c|py', 'fast_compile'))
    print 'time:',t2