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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.
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.
Cumulative product of x.