Package org.ejml.sparse.csc.mult

Class ImplSparseSparseMult_DSCC

java.lang.Object

org.ejml.sparse.csc.mult.ImplSparseSparseMult_DSCC

public class ImplSparseSparseMult_DSCC
extends java.lang.Object

Constructor Summary

Constructors

Constructor	Description
ImplSparseSparseMult_DSCC()

Method Summary

Modifier and Type	Method	Description
static void	addRowsInAInToC(org.ejml.data.DMatrixSparseCSC A, int colA, org.ejml.data.DMatrixSparseCSC C, int colC, int[] w)	Adds rows to C[*,colC] that are in A[*,colA] as long as they are marked in w.
static double	dotInnerColumns(org.ejml.data.DMatrixSparseCSC A, int colA, org.ejml.data.DMatrixSparseCSC B, int colB, org.ejml.data.IGrowArray gw, org.ejml.data.DGrowArray gx)	Computes the inner product of two column vectors taken from the input matrices.
static void	innerProductLower(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixSparseCSC B, org.ejml.data.IGrowArray gw, org.ejml.data.DGrowArray gx)	Computes the inner product of A times A and stores the results in B.
static void	mult(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	mult(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixSparseCSC B, org.ejml.data.DMatrixSparseCSC C, org.ejml.data.IGrowArray gw, org.ejml.data.DGrowArray gx)	Performs matrix multiplication.
static void	multAdd(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multAddColA(org.ejml.data.DMatrixSparseCSC A, int colA, double alpha, org.ejml.data.DMatrixSparseCSC C, int mark, double[] x, int[] w)	Performs the performing operation x = x + A(:,i)*alpha
static void	multAddTransA(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multAddTransAB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multAddTransB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multTransA(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multTransA(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixSparseCSC B, org.ejml.data.DMatrixSparseCSC C, org.ejml.data.IGrowArray gw, org.ejml.data.DGrowArray gx)	Performs matrix multiplication.
static void	multTransAB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multTransB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixRMaj B, org.ejml.data.DMatrixRMaj C)
static void	multTransB(org.ejml.data.DMatrixSparseCSC A, org.ejml.data.DMatrixSparseCSC B, org.ejml.data.DMatrixSparseCSC C, org.ejml.data.IGrowArray gw, org.ejml.data.DGrowArray gx)	Performs matrix multiplication.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ImplSparseSparseMult_DSCC

public ImplSparseSparseMult_DSCC()

Method Detail

mult

public static void mult(org.ejml.data.DMatrixSparseCSC A,
                        org.ejml.data.DMatrixSparseCSC B,
                        org.ejml.data.DMatrixSparseCSC C,
                        @Nullable
                        org.ejml.data.IGrowArray gw,
                        @Nullable
                        org.ejml.data.DGrowArray gx)

Performs matrix multiplication. C = A*B

Parameters:

A - Matrix

B - Matrix

C - Storage for results. Data length is increased if increased if insufficient.

gw - (Optional) Storage for internal workspace. Can be null.

gx - (Optional) Storage for internal workspace. Can be null.

multTransA

public static void multTransA(org.ejml.data.DMatrixSparseCSC A,
                              org.ejml.data.DMatrixSparseCSC B,
                              org.ejml.data.DMatrixSparseCSC C,
                              @Nullable
                              org.ejml.data.IGrowArray gw,
                              @Nullable
                              org.ejml.data.DGrowArray gx)

Performs matrix multiplication. C = A^T*B

Parameters:

A - Matrix

B - Matrix

C - Storage for results. Data length is increased if increased if insufficient.

gw - (Optional) Storage for internal workspace. Can be null.

gx - (Optional) Storage for internal workspace. Can be null.

multTransB

public static void multTransB(org.ejml.data.DMatrixSparseCSC A,
                              org.ejml.data.DMatrixSparseCSC B,
                              org.ejml.data.DMatrixSparseCSC C,
                              @Nullable
                              org.ejml.data.IGrowArray gw,
                              @Nullable
                              org.ejml.data.DGrowArray gx)

Performs matrix multiplication. C = A*B^T

Parameters:

A - Matrix

B - Matrix

C - Storage for results. Data length is increased if increased if insufficient.

gw - (Optional) Storage for internal workspace. Can be null.

gx - (Optional) Storage for internal workspace. Can be null.

multAddColA

public static void multAddColA(org.ejml.data.DMatrixSparseCSC A,
                               int colA,
                               double alpha,
                               org.ejml.data.DMatrixSparseCSC C,
                               int mark,
                               double[] x,
                               int[] w)

Performs the performing operation x = x + A(:,i)*alpha

NOTE: This is the same as cs_scatter() in csparse.

addRowsInAInToC

public static void addRowsInAInToC(org.ejml.data.DMatrixSparseCSC A,
                                   int colA,
                                   org.ejml.data.DMatrixSparseCSC C,
                                   int colC,
                                   int[] w)

Adds rows to C[*,colC] that are in A[*,colA] as long as they are marked in w. This is used to grow C and colC must be the last filled in column in C.

NOTE: This is the same as cs_scatter if x is null.

Parameters:

A - Matrix

colA - The column in A that is being examined

C - Matrix

colC - Column in C that rows in A are being added to.

w - An array used to indicate if a row in A should be added to C. if w[i] < colC AND i is a row in A[*,colA] then it will be added.

mult

public static void mult(org.ejml.data.DMatrixSparseCSC A,
                        org.ejml.data.DMatrixRMaj B,
                        org.ejml.data.DMatrixRMaj C)

multAdd

public static void multAdd(org.ejml.data.DMatrixSparseCSC A,
                           org.ejml.data.DMatrixRMaj B,
                           org.ejml.data.DMatrixRMaj C)

multTransA

public static void multTransA(org.ejml.data.DMatrixSparseCSC A,
                              org.ejml.data.DMatrixRMaj B,
                              org.ejml.data.DMatrixRMaj C)

multAddTransA

public static void multAddTransA(org.ejml.data.DMatrixSparseCSC A,
                                 org.ejml.data.DMatrixRMaj B,
                                 org.ejml.data.DMatrixRMaj C)

multTransB

public static void multTransB(org.ejml.data.DMatrixSparseCSC A,
                              org.ejml.data.DMatrixRMaj B,
                              org.ejml.data.DMatrixRMaj C)

multAddTransB

public static void multAddTransB(org.ejml.data.DMatrixSparseCSC A,
                                 org.ejml.data.DMatrixRMaj B,
                                 org.ejml.data.DMatrixRMaj C)

multTransAB

public static void multTransAB(org.ejml.data.DMatrixSparseCSC A,
                               org.ejml.data.DMatrixRMaj B,
                               org.ejml.data.DMatrixRMaj C)

multAddTransAB

public static void multAddTransAB(org.ejml.data.DMatrixSparseCSC A,
                                  org.ejml.data.DMatrixRMaj B,
                                  org.ejml.data.DMatrixRMaj C)

dotInnerColumns

public static double dotInnerColumns(org.ejml.data.DMatrixSparseCSC A,
                                     int colA,
                                     org.ejml.data.DMatrixSparseCSC B,
                                     int colB,
                                     org.ejml.data.IGrowArray gw,
                                     org.ejml.data.DGrowArray gx)

Computes the inner product of two column vectors taken from the input matrices.

dot = A(:,colA)'*B(:,colB)

Parameters:

A - Matrix

colA - Column in A

B - Matrix

colB - Column in B

Returns:

Dot product

innerProductLower

public static void innerProductLower(org.ejml.data.DMatrixSparseCSC A,
                                     org.ejml.data.DMatrixSparseCSC B,
                                     @Nullable
                                     org.ejml.data.IGrowArray gw,
                                     @Nullable
                                     org.ejml.data.DGrowArray gx)

Computes the inner product of A times A and stores the results in B. The inner product is symmetric and this function will only store the lower triangle. If the full matrix is needed then.

B = A^T*A

Parameters:

A - (Input) Matrix

B - (Output) Storage for output.

gw - (Optional) Workspace

gx - (Optional) Workspace