chainer.functions.zoneout

chainer.functions.zoneout(h, x, ratio=.5)

Drops elements of input variable and sets to previous variable randomly.

This function drops input elements randomly with probability ratio and instead sets dropping element to their previous variable. In testing mode , it does nothing and just returns x.

Warning

train argument is not supported anymore since v2. Instead, use chainer.using_config('train', train). See chainer.using_config().

Parameters:

• h (Variable or N-dimensional array) – Previous variable.
• x (Variable or N-dimensional array) – Input variable.
• ratio (float) – Zoneout ratio.

Returns:

Output variable.

Return type:

Variable

See the paper: Zoneout: Regularizing RNNs by Randomly Preserving Hidden Activations.