com.github.signaflo.math.linear.doubles

Class QuadraticForm

java.lang.Object

com.github.signaflo.math.linear.doubles.QuadraticForm

public final class QuadraticForm
extends Object

Represents a quadratic form (see section 3.11 here). Note that an object of this class may be constructed with any square matrix, not just a symmetric one.

Constructor Summary

Constructors

Constructor and Description
QuadraticForm(Vector x, Matrix A)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode()
double	multiply() Compute xTAx and return the resulting value.
static double	multiply(Vector x, Matrix A) Compute xTAx and return the resulting value.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QuadraticForm

public QuadraticForm(Vector x,
                     Matrix A)

Method Detail

multiply

public static double multiply(Vector x,
                              Matrix A)

Compute x^TAx and return the resulting value.

Parameters:

x - the vector component of the quadratic form.

A - the matrix component of the quadratic form.

Returns:

the result of x^TAx.

multiply

public double multiply()

Compute x^TAx and return the resulting value.

Returns:

the result of x^TAx.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object