edu.stanford.nlp.linalg
Class ColtDenseMatrix

java.lang.Object
  |
  +--edu.stanford.nlp.linalg.AbstractMatrix
        |
        +--edu.stanford.nlp.linalg.ColtDenseMatrix

All Implemented Interfaces:

Cloneable, Matrix

public class ColtDenseMatrix

extends AbstractMatrix

A Wrapper for a DenseDoubleMatrix2D

Field Summary

Fields inherited from class edu.stanford.nlp.linalg.AbstractMatrix

nc, nnz, nr

Constructor Summary

ColtDenseMatrix(cern.colt.matrix.DoubleMatrix2D mat)

ColtDenseMatrix(int num_rows, int num_columns)

ColtDenseMatrix(String filename)

Method Summary

void	allocate(int num_rows, int num_columns) allocates memory for matrix of given size
void	allocate(int num_rows, int num_columns, int cardinality) allocates memory for matrix of given size and cardinality
int	cardinality() Returns the number of cells having non-zero values; ignores tolerance.
Object	clone()
int	columns() returns number of columns in matrix
double	get(int i, int j) Returns the matrix cell value at coordinate [row,column].
Array	getColumn(int index) returns number of columns in Matrix
int	rows() returns number of rows in matrix
void	set(int i, int j, double value) sets i,j th element of Matrix to value
cern.colt.matrix.DoubleMatrix2D	toDoubleMatrix2D()

Methods inherited from class edu.stanford.nlp.linalg.AbstractMatrix

columnIterator, entryIterator, entrySet, normalizeColumns, setColumn, tfidf, toDenseString, toMatlabSparseString, toSparseString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ColtDenseMatrix

public ColtDenseMatrix(cern.colt.matrix.DoubleMatrix2D mat)

ColtDenseMatrix

public ColtDenseMatrix(int num_rows,
                       int num_columns)

ColtDenseMatrix

public ColtDenseMatrix(String filename)
                throws FileNotFoundException,
                       IOException

Method Detail

getColumn

public Array getColumn(int index)

returns number of columns in Matrix

set

public void set(int i,
                int j,
                double value)

sets i,j th element of Matrix to value

get

public double get(int i,
                  int j)

Returns the matrix cell value at coordinate [row,column].

Returns:

the value of the specified cell.

Throws:

IndexOutOfBoundsException - if column<0 || column>=columns() || row<0 || row>=rows()

allocate

public void allocate(int num_rows,
                     int num_columns)

allocates memory for matrix of given size

Specified by:

allocate in class AbstractMatrix

allocate

public void allocate(int num_rows,
                     int num_columns,
                     int cardinality)

allocates memory for matrix of given size and cardinality

Specified by:

allocate in class AbstractMatrix

toDoubleMatrix2D

public cern.colt.matrix.DoubleMatrix2D toDoubleMatrix2D()

clone

public Object clone()

Specified by:

clone in interface Matrix

Specified by:

clone in class AbstractMatrix

columns

public int columns()

Description copied from interface: Matrix

returns number of columns in matrix

Specified by:

columns in interface Matrix

Overrides:

columns in class AbstractMatrix

rows

public int rows()

Description copied from interface: Matrix

returns number of rows in matrix

Specified by:

rows in interface Matrix

Overrides:

rows in class AbstractMatrix

cardinality

public int cardinality()

Description copied from interface: Matrix

Returns the number of cells having non-zero values; ignores tolerance.

Specified by:

cardinality in interface Matrix

Overrides:

cardinality in class AbstractMatrix