我目前正在使用定义如下的convolutional neural network
训练conv2D layer
:
conv1 = tf.keras.layers.Conv2D(filters=64, kernel_size=(3,3), padding='SAME', activation='relu')(inputs)
我的理解是,默认的kernel_initializer是
glorot_uniform
,其默认种子为'none':tf.keras.layers.Conv2D(
filters, kernel_size, strides=(1, 1), padding='valid', data_format=None,
dilation_rate=(1, 1), activation=None, use_bias=True,
kernel_initializer='glorot_uniform', bias_initializer='zeros',
kernel_regularizer=None, bias_regularizer=None, activity_regularizer=None,
kernel_constraint=None, bias_constraint=None, **kwargs
)
tf.compat.v1.keras.initializers.glorot_uniform(seed=None, dtype=tf.dtypes.float32)
我正在尝试产生可复制的代码,并且已经按照this StackOverflow post设置了随机种子:
seed_num = 1
os.environ['PYTHONHASHSEED'] = '0'
np.random.seed(seed_num)
rn.seed(seed_num)
session_conf = tf.compat.v1.ConfigProto(intra_op_parallelism_threads=1, inter_op_parallelism_threads=1)
tf.random.set_seed(seed_num)
sess = tf.compat.v1.Session(graph=tf.compat.v1.get_default_graph(), config=session_conf)
K.set_session(sess)
tf.random.set_seed
中的glorot_uniform
使用的conv2D layer
种子编号吗?如果没有,那么在定义conv2D layer
时将如何定义该种子?
最佳答案
对于每一层,您都可以将种子用于内核初始化和偏差初始化。
您可以单独为初始化程序添加种子,kernel_initializer=initializers.glorot_uniform(seed=0))
从文档中:
glorot_normal
keras.initializers.glorot_normal(seed=None)
Glorot normal initializer, also called Xavier normal initializer.
It draws samples from a truncated normal distribution centered on 0 with stddev = sqrt(2 / (fan_in + fan_out)) where fan_in is the number of input units in the weight tensor and fan_out is the number of output units in the weight tensor.
Arguments
seed: A Python integer. Used to seed the random generator.
关于python - 在keras中使用conv2D层时,在tf.random.set_seed中设置种子是否还会设置glorot_uniform kernel_initializer使用的种子吗?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/61364793/