I am using theano 0.9.0 and this function does not exist.. I can't find it
in the documentation either !
And in the theano docs it says that :
__{abs,neg,lt,le,gt,ge,invert,and,or,add,sub,mul,div,truediv,floordiv}__
Those elemwise operation are supported via Python syntax.
Le mercredi 28 juin 2017 21:15:37 UTC-4, nouiz a écrit :
>
> Don't use the Python "and" operation. Use theano.tensor.and(a,b) instead.
> I think it will fix your problem.
>
> Le mer. 28 juin 2017 10:26, Sym <mass.c...@gmail.com <javascript:>> a
> écrit :
>
>>
>> I want to build a piecewise function with theano, for instance a function
>> that is nonzero only in the interval [2,3].
>>
>> Here is the minimal code reproducing the error :
>>
>>
>> import theano
>> import theano.tensor as T
>> import numpy as np
>> import matplotlib.pyplot as plt
>>
>> r = T.scalar()
>> gate = T.switch( T.ge(r,2.) and T.le(r,3.) , 1., 0.)
>> f = theano.function([r],gate)
>> x = np.arange(0.,4.,0.05,dtype='float32')
>> y = [f(i) for i in x]
>> plt.plot(x,y)
>>
>>
>>
>> The result is the following : https://i.stack.imgur.com/XMQme.png
>>
>> Which is clearly not correct : only one condition is satisfied here.
>>
>>
>> If I replace T.switch by theano.ifelse.ifelse the result is the same...
>>
>> Is it a known bug, or am I missing something here?
>>
>>
>> Thanks a lot !
>>
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>>
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