com.numericalmethod.suanshu.matrix.doubles.matrixtype.sparse
Interface SparseStructure

All Known Subinterfaces:

SparseMatrix

All Known Implementing Classes:

CsrSparseMatrix, DokSparseMatrix, LilSparseMatrix, SparseVector

public interface SparseStructure

This interface defines common operations on sparse structures like sparse vector or sparse matrix.

Method Summary

int	dropTolerance(double tolerance) Remove non-zero entries x whose magnitude is less than or equal to the tolerance, i.e., (|x| <= tolerance).
int	nnz() Get the number of non-zero entries in the matrix.

Method Detail

nnz

int nnz()

Get the number of non-zero entries in the matrix.

Returns:

the number of non-zero entries in the matrix

dropTolerance

int dropTolerance(double tolerance)

Remove non-zero entries x whose magnitude is less than or equal to the tolerance, i.e., (|x| <= tolerance).

Parameters:

tolerance - the tolerance for non-zeros

Returns:

the number of non-zeros removed