expand_dims

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tensorflow 笔记14：tf.expand_dims和tf.squeeze函数

tf.expand_dims和tf.squeeze函数一.tf.expand_dims() Function tf.expand_dims(input, axis=None, name=None, dim=None) Inserts a dimension of 1 into a tensor’s shape. 在第axis位置增加一个维度 Given a tensor input, this operation inserts a dimension of 1 at the dimensio…

tf.expand_dims 来增加维度

主要是因为tflearn官方的例子总是有embeding层,去掉的话要conv1d正常工作,需要加上expand_dims network = input_data(shape=[None, 100], name='input') network = tf.expand_dims(network, 2) branch1 = conv_1d(network, 128, 3, padding='valid', activation='relu', regularizer="L2") ref…

tensorflow 基本函数(1.tf.split, 2.tf.concat,3.tf.squeeze, 4.tf.less_equal, 5.tf.where, 6.tf.gather, 7.tf.cast, 8.tf.expand_dims, 9.tf.argmax, 10.tf.reshape， 11.tf.stack， 12tf.less， 13.tf.boolean_mask

1. tf.split(3, group, input) # 拆分函数 3 表示的是在第三个维度上, group表示拆分的次数, input 表示输入的值 import tensorflow as tf import numpy as np x = [[1, 2], [3, 4]] Y = tf.split(axis=1, num_or_size_splits=2, value=x) sess = tf.Session() for y in Y: print(sess.run(y))…

expand_dims函数

>>> x = np.array([1,2]) >>> x.shape (2,) >>> y = np.expand_dims(x, axis=0) >>> y array([[1, 2]]) >>> y.shape (1, 2) >>> x = np.array([1,2]) >>> x.shape (2,) >>> y = np.expand_dims(x,…

Shape，expand_dims，slice基本用法

import tensorflow as tf t = tf.constant([[[1, 1, 1], [2, 2, 2]], [[3, 3, 3], [4, 4, 4]], [[5, 5, 5], [6, 6, 6]]]) #(3 2 3) slicet1 = tf.slice(t, [1, 0, 0], [1, 1, 3]) slicet2 = tf.slice(t, [1, 0, 0], [1, 2, 3]) slicet3 = tf.slice(t, [1, 0, 0], [2, 1,…

pytorch中torch.unsqueeze()函数与np.expand_dims()

numpy.expand_dims(a, axis) Expand the shape of an array. Insert a new axis that will appear at the axis position in the expanded array shape. Parameters: a : array_like Input array. axis : int Position in the expanded axes where the new axis is place…