tensorflow knowledge summary

tf.reduce_sum () is a summation function

tf.train.GradientDescentOptimizer () using stochastic gradient descent algorithm

tf.global_variables_initializer () initialization

tf.cast () execution tensorflow in tensor data type conversion, such as read into the picture if it is int8 type, usually in the format you want to convert the image data is float32 before training.

tf.enable_eager_execution()

function takes a negative value tf.negative