Perceptron.scala

object Main {

    def AND(x1:Double, x2:Double): Double = {
        val w1 = 0.5
        val w2 = 0.5
        val b = -0.7
        val tmp = x1 * w1 + x2 * w2 + b
        if (tmp <= 0) {
            0
        } else {
            1
        }
    }

    def NAND(x1:Double, x2:Double): Double = {
        val w1 = -0.5
        val w2 = -0.5
        val b = 0.7
        val tmp = x1 * w1 + x2 * w2 + b
        if (tmp <= 0) {
            0
        } else {
            1
        }
    }

    def OR(x1:Double, x2:Double): Double = {
        val w1 = 0.5
        val w2 = 0.5
        val b = -0.3
        val tmp = x1 * w1 + x2 * w2 + b
        if (tmp <= 0) {
            0
        } else {
            1
        }
    }

    def XOR(x1:Double, x2:Double): Double = {
        val s1 = NAND(x1, x2)
        val s2 = OR(x1, x2)
        AND(s1, s2)
    }

    def main(args:Array[String]) {
        println(XOR(0, 0))
        println(XOR(1, 0))
        println(XOR(0, 1))
        println(XOR(1, 1))
    }
}