tf.contrib.seq2seq.safe_cumprod

Computes cumprod of x in logspace using cumsum to avoid underflow.

tf.contrib.seq2seq.safe_cumprod(
    x, *args, **kwargs
)

The cumprod function and its gradient can result in numerical instabilities when its argument has very small and/or zero values. As long as the argument is all positive, we can instead compute the cumulative product as exp(cumsum(log(x))). This function can be called identically to tf.cumprod.

Args
x	Tensor to take the cumulative product of.
*args	Passed on to cumsum; these are identical to those in cumprod.
**kwargs	Passed on to cumsum; these are identical to those in cumprod.

Returns
Cumulative product of x.