Perceptron and Driver pushed

Author: adas0910

src/Driver.java

@@ -0,0 +1,43 @@
+public class Driver {
+    public static void main(String args[])
+    {
+        int[][][] data = Perceptron.anddata;
+        double[] weights = Perceptron.INTIAL_WEIGHTS;
+        Driver driver = new Driver();
+        Perceptron perceptron = new Perceptron();
+        int epochnumber = 0;
+        boolean errorflag = true;
+        double error = 0;
+        double[] adjustedweights = null;
+        while(errorflag){
+            driver.printHeading(epochnumber++);
+            errorflag = false  ;
+            error = 0;
+            for(int x =0; x< data.length;x++){
+                double weightedsum = perceptron.calculateWeightedsum(data[x][0], weights);
+                int result = perceptron.applyActivationFunction(weightedsum);
+                error= data[x][1][0] - result  ;
+                if(error !=0 )  errorflag = true;
+                adjustedweights = perceptron.adjustweight(data[x][0], weights, error);
+                driver.printvector(data[x],weights, result , error, weightedsum, adjustedweights);
+                weights = adjustedweights;
+
+
+            }
+
+        }
+
+    }
+    public void printHeading( int epochNumber)
+    {
+        System.out.println("\n===========================================Epoch #" + epochNumber+"======================================================");
+        System.out.println("    w1  |   w2   |  x1  |  x2  |  Target Result  |  Result  |  error  | Weighted sum | adjusted w1  |  adjusted w2 ");
+        System.out.println("--------------------------------------------------------------------------------------------------------------------");
+    }
+    public void printvector(int[][] data, double[] weights , int result , double error , double weightedsum , double[] adjustedweights ) {
+        System.out.println("  "+String.format("%.2f",weights[0])+"|"+String.format("%.2f",weights[1])+"|"+data[0][0]+"|"+data[0][1]+
+                            "  |     "+data[1][0]+"        |   "+result+"    |  "+error+"   |    "+String.format("%.2f", weightedsum)+
+                            "     |   "+String.format("%.2f",adjustedweights[0]) + "   |  "+String.format("%.2f",adjustedweights[1]));
+
+    }
+}

src/Perceptron.java

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+public class Perceptron {
+    public static final int[][][] anddata = {{{0,0},{0}},
+                                            {{0,1},{0}},
+                                            {{1,0},{0}},
+                                            {{1,1},{1}}};
+    public static final double LEARNING_RATE = 0.05;
+    public static final double[] INTIAL_WEIGHTS = {0.33, 0.65};//{Math.random(),Math.random()};
+    public double calculateWeightedsum(int[] data, double[] weights){
+        double weightedsum = 0;
+        for(int x=0;x< data.length; x++) weightedsum += data[x]*weights[x];
+        return weightedsum;
+    }
+    public int applyActivationFunction(double weightedsum){
+        int result = 0;
+        if(weightedsum>1)result = 1;
+        return result;
+    }
+    public double[] adjustweight(int[] data, double[] weights, double error){
+        double[] adjustedweights = new double[weights.length];
+        for(int x= 0; x< weights.length;x++) adjustedweights[x]= LEARNING_RATE * error * data[x] + weights[x];
+        return adjustedweights;
+    }
+
+
+
+}