#! /usr/bin/python
# -*- coding: utf-8 -*-
import tensorflow as tf
from tensorlayer.layers.core import Layer
from tensorlayer import logging
from tensorlayer.decorators import deprecated_alias
__all__ = [
'ExpandDimsLayer',
'TileLayer',
]
[docs]class ExpandDimsLayer(Layer):
"""
The :class:`ExpandDimsLayer` class inserts a dimension of 1 into a tensor's shape,
see `tf.expand_dims() <https://www.tensorflow.org/api_docs/python/tf/expand_dims>`__ .
Parameters
----------
prev_layer : :class:`Layer`
The previous layer.
axis : int
The dimension index at which to expand the shape of input.
name : str
A unique layer name.
Examples
--------
>>> import tensorflow as tf
>>> import tensorlayer as tl
>>> x = tf.placeholder(tf.float32, (None, 100))
>>> n = tl.layers.InputLayer(x, name='in')
>>> n = tl.layers.ExpandDimsLayer(n, 2)
[None, 100, 1]
"""
@deprecated_alias(layer='prev_layer', end_support_version=1.9) # TODO remove this line for the 1.9 release
def __init__(
self,
prev_layer,
axis,
name='expand_dims',
):
super(ExpandDimsLayer, self).__init__(prev_layer=prev_layer, name=name)
logging.info("ExpandDimsLayer %s: axis: %d" % (self.name, axis))
with tf.variable_scope(name):
self.outputs = tf.expand_dims(self.inputs, axis=axis)
self._add_layers(self.outputs)
[docs]class TileLayer(Layer):
"""
The :class:`TileLayer` class constructs a tensor by tiling a given tensor,
see `tf.tile() <https://www.tensorflow.org/api_docs/python/tf/tile>`__ .
Parameters
----------
prev_layer : :class:`Layer`
The previous layer.
multiples: tensor
Must be one of the following types: int32, int64.
1-D Length must be the same as the number of dimensions in input.
name : str
A unique layer name.
Examples
--------
>>> import tensorflow as tf
>>> import tensorlayer as tl
>>> x = tf.placeholder(tf.float32, (None, 100))
>>> n = tl.layers.InputLayer(x, name='in')
>>> n = tl.layers.ExpandDimsLayer(n, 2)
>>> n = tl.layers.TileLayer(n, [-1, 1, 3])
[None, 100, 3]
"""
@deprecated_alias(layer='prev_layer', end_support_version=1.9) # TODO remove this line for the 1.9 release
def __init__(self, prev_layer, multiples=None, name='tile'):
super(TileLayer, self).__init__(prev_layer=prev_layer, name=name)
logging.info("TileLayer %s: multiples: %s" % (self.name, multiples))
with tf.variable_scope(name):
self.outputs = tf.tile(self.inputs, multiples=multiples)
self._add_layers(self.outputs)