tf之get_Variable()
转自:https://blog.csdn.net/UESTC_C2_403/article/details/72327321
1.
tf.get_variable(name, shape, initializer): name就是变量的名称,shape是变量的维度,initializer是变量初始化的方式,初始化的方式有以下几种:
tf.constant_initializer:常量初始化函数
tf.random_normal_initializer:正态分布
tf.truncated_normal_initializer:截取的正态分布
tf.random_uniform_initializer:均匀分布
tf.zeros_initializer:全部是0
tf.ones_initializer:全是1
tf.uniform_unit_scaling_initializer:满足均匀分布,但不影响输出数量级的随机值
import tensorflow as tf import numpy as np import matplotlib.pyplot as plt a1 = tf.get_variable(name='a1', shape=[2,3], initializer=tf.random_normal_initializer(mean=0, stddev=1)) a2 = tf.get_variable(name='a2', shape=[1], initializer=tf.constant_initializer(1)) a3 = tf.get_variable(name='a3', shape=[2,3], initializer=tf.ones_initializer()) with tf.Session() as sess: sess.run(tf.global_variables_initializer()) print(sess.run(a1)) print(sess.run(a2)) print(sess.run(a3))
输出:
[[ 0.00974968 -0.22292562 -0.27393913] [-0.914102 1.172266 0.24210556]] [1.] [[1. 1. 1.] [1. 1. 1.]]