说明

感觉有点意思，记录于此。

gate.py

class SwitchGate(object):
    def AND(self, x1, x2):
        if 1==x1 and 1==x2:
            return 1
        else:
            return 0
 
    def OR(self, x1, x2):
        if 1==x1 or 1==x2:
            return 1
        else:
            return 0
 
    def NAND(self, x1, x2):
        if 1==x1 and 1==x2:
            return 0
        else:
            return 1
 
    def XOR(self, x1, x2):
        s1=self.NAND(x1, x2)
        s2=self.OR(  x1, x2)
        y =self.AND( s1, s2)
        return y
 
class PerceptronGate(object):
    def AND(self, x1, x2):
        # x2>-x1+1.5  ->  x1+x2-1.5>0 ，可以有无数条线
        w1, w2, b=[1, 1, -1.5]
        if w1*x1+w2*x2+b>0:
            return 1
        else:
            return 0
 
    def OR(self, x1, x2):
        # x2>-x1+0.5  ->  x1+x2-0.5>0
        w1, w2, b=[1, 1, -0.5]
        if w1*x1+w2*x2+b>0:
            return 1
        else:
            return 0
 
    def NAND(self, x1, x2):
        # x2<-x1+1.5  ->  x1+x2-1.5<0  -> -x1-x2+1.5>0
        w1, w2, b=[-1, -1, 1.5]  # 除了参数不同，后面的代码结构完全一样，即仅依靠参数选取，可以决定门的类型（除了异或门）
        if w1*x1+w2*x2+b>0:
            return 1
        else:
            return 0
 
    def XOR(self, x1, x2):
        s1=self.NAND(x1, x2)
        s2=self.OR(  x1, x2)
        y =self.AND( s1, s2)
        return y
 
def main():
    print("SwitchGate")
    fn=SwitchGate()
    for x1,x2 in [(0,0), (0,1), (1,0), (1,1)]:
        y=fn.XOR(x1,x2)
        print("{x1},{x2}->{y}".format(x1=x1, x2=x2, y=y))
 
    print("")
    print("PerceptronGate")
    fn=PerceptronGate()
    for x1,x2 in [(0,0), (0,1), (1,0), (1,1)]:
        y=fn.XOR(x1,x2)
        print("{x1},{x2}->{y}".format(x1=x1, x2=x2, y=y))
 
if "__main__"==__name__:
    main()