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Computes dropout.

With probability rate, drops elements of x. Input that are kept are scaled up by 1 / (1 - rate), otherwise outputs 0. The scaling is so that the expected sum is unchanged.

By default, each element is kept or dropped independently. If noise_shape is specified, it must be broadcastable to the shape of x, and only dimensions with noise_shape[i] == shape(x)[i] will make independent decisions. For example, if shape(x) = [k, l, m, n] and noise_shape = [k, 1, 1, n], each batch and channel component will be kept independently and each row and column will be kept or not kept together.

x A floating point tensor.
rate A scalar Tensor with the same type as x. The probability that each element is dropped. For example, setting rate=0.1 would drop 10% of input elements.
noise_shape A 1-D Tensor of type int32, representing the shape for randomly generated keep/drop flags.
seed A Python integer. Used to create random seeds. See tf.compat.v1.set_random_seed for behavior.
name A name for this operation (optional).

A Tensor of the same shape of x.

ValueError If rate is not in (0, 1] or if x is not a floating point tensor.