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# -*- coding: utf-8 -*-

# Write : lgy

# Data : 2017-09-22

# function: Algorithm activator function sets

import math

class Activator(object):

"""

神经网络算法的各种激活函数 集合

"""

def __init__(self):

pass

@staticmethod

def AndFunction(X):

return 1 if X > 0 else 0

@staticmethod

def Sigmoid(X):

# val = reduce(lambda a,b: a+b, X)

return 1.0 / (1.0 + math.e ** X)

@staticmethod

def tanH(X):

return math.tanh(X)