tf.contrib.seq2seq.safe_cumprod(
x,
*args,
**kwargs
)
Defined in tensorflow/contrib/seq2seq/python/ops/attention_wrapper.py
.
Computes cumprod of x in logspace using cumsum to avoid underflow.
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.