Java Utililty Methods Array Dot Product

List of utility methods to do Array Dot Product

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Description

The list of methods to do Array Dot Product are organized into topic(s).

Method

doubledotProduct(double[] fv1, double[] fv2)
Compute the dot product between two feature vectors represented as double arrays 
double sum = 0.0;
for (int i = 0; i < fv1.length && i < fv2.length; i++) {
    sum += fv1[i] * fv2[i];
return sum;
doubledotProduct(double[] thisVector, double[] thatVector)
dot Product 
double product = 0;
if (thisVector.length != thatVector.length) {
    throw new IllegalArgumentException("mismatched size for vector dot product");
for (int i = 0; i < thisVector.length; ++i) {
    product += thisVector[i] * thatVector[i];
return product;
...
doubledotProduct(double[] v, double[] u)
Return the dot product of two vectors v u 
if (v.length != u.length) {
    throw new Exception("Number of entries of v " + v.length + " does not match the number of entries of u "
            + u.length);
double result = 0;
for (int r = 0; r < v.length; r++) {
    result += v[r] * u[r];
return result;
doubledotProduct(double[] vector1, double[] vector2)
dot Product 
double result = 0;
for (int i = 0; i < vector1.length; i++)
    result += vector1[i] * vector2[i];
return result;
doubledotProduct(double[] x, double[] y)
dot Product 
assert x.length == y.length;
double tmpSum = 0.0;
for (int i = 0; i < x.length; i++)
    tmpSum += x[i] * y[i];
return tmpSum;
DoubledotProduct(final double[] a, final double[] b)
dot Product 
double result = 0;
try {
    for (int i = 0; i < a.length; i++)
        result += a[i] * b[i];
} catch (ArrayIndexOutOfBoundsException e) {
    System.err.println("Number of inputs does not match the number of weights. Exiting...");
    System.exit(1);
return result;
doubledotProduct(final double[] anArray, final double[] anotherArray)
dot Product 
double product = 0;
for (int i = 0; i < anotherArray.length; i++) {
    product += anArray[i] * anotherArray[i];
return product;
doubledotProduct(final double[] v1, final double[] v2, int n)
Computes the dotproduct of the given vectors. 
assert v1 != null;
assert v2 != null;
assert v1.length >= n;
assert v2.length >= n;
double dp = 0;
for (int i = 0; i < n; i++) {
    dp += v1[i] * v2[i];
return dp;
floatdotProduct(float x1, float y1, float x2, float y2)
Compute the dot product of two vectors. 
return x1 * x2 + y1 * y2;
doubledotProduct(float[] p, int a, int b, int c)
dot Product 
double ux = (p[b] - p[a]);
double uy = (p[b + 1] - p[a + 1]);
double ab = Math.sqrt(ux * ux + uy * uy);
double vx = (p[b] - p[c]);
double vy = (p[b + 1] - p[c + 1]);
double bc = Math.sqrt(vx * vx + vy * vy);
double d = ab * bc;
if (d <= 0)
...