edu.stanford.nlp.linalg
Class ArrayListMatrix

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

All Implemented Interfaces:

Cloneable, GrowableMatrix, Matrix

public class ArrayListMatrix

extends AbstractMatrix

implements GrowableMatrix

An ArrayList of arrays

Field Summary

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

nc, nnz, nr

Constructor Summary

ArrayListMatrix()

ArrayListMatrix(int size)

ArrayListMatrix(int num_rows, int num_columns)

ArrayListMatrix(String filename)

Method Summary

int	addColumn(Array v) insert column vector v into the ith column of the matrix.
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
Object	clone()
Iterator	columnIterator() returns iterator over all column in matrix.
double	get(int i, int j) Returns the matrix cell value at coordinate [row,column].
Array	getColumn(int index) returns index'th column of Matrix
void	removeColumn(int index)
void	set(int i, int j, double value) sets i,j th element of Matrix to value
void	setColumn(int index, Array column) sets column with index index = column

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

cardinality, columns, entryIterator, entrySet, normalizeColumns, rows, tfidf, toDenseString, toMatlabSparseString, toSparseString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.stanford.nlp.linalg.Matrix

cardinality, columns, entryIterator, entrySet, normalizeColumns, rows, toDenseString, toMatlabSparseString, toSparseString, toString

Constructor Detail

ArrayListMatrix

public ArrayListMatrix()

ArrayListMatrix

public ArrayListMatrix(int size)

ArrayListMatrix

public ArrayListMatrix(int num_rows,
                       int num_columns)

ArrayListMatrix

public ArrayListMatrix(String filename)
                throws FileNotFoundException,
                       IOException

Method Detail

addColumn

public int addColumn(Array v)

insert column vector v into the ith column of the matrix.

Specified by:

addColumn in interface GrowableMatrix

removeColumn

public void removeColumn(int index)

columnIterator

public Iterator columnIterator()

returns iterator over all column in matrix.

Specified by:

columnIterator in interface Matrix

Overrides:

columnIterator in class AbstractMatrix

getColumn

public Array getColumn(int index)

returns index'th column of Matrix

Specified by:

getColumn in interface Matrix

set

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

sets i,j th element of Matrix to value

Specified by:

set in interface Matrix

get

public double get(int i,
                  int j)

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

Specified by:

get in interface Matrix

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

clone

public Object clone()

Specified by:

clone in interface Matrix

Specified by:

clone in class AbstractMatrix

setColumn

public void setColumn(int index,
                      Array column)

Description copied from interface: Matrix

sets column with index index = column

Specified by:

setColumn in interface Matrix

Overrides:

setColumn in class AbstractMatrix