edu.stanford.nlp.linalg
Class AbstractArray

java.lang.Object
  |
  +--edu.stanford.nlp.linalg.AbstractArray

All Implemented Interfaces:

Array, Cloneable

Direct Known Subclasses:

ColtSparseDoubleArray, DenseDoubleArray, DenseIntArray, DenseNumberArray, GrowableDenseDoubleArray, GrowableDenseIntArray

public abstract class AbstractArray

extends Object

implements Array

Abstract Array class

Field Summary

protected int

ci

Constructor Summary

AbstractArray()

Method Summary

Array	add(Array addend) Returns this + addend does not change receiver.
int	cardinality() Returns the number of cells having non-zero values; ignores tolerance.
abstract Object	clone() Returns deep copy of Array
int	columnIndex() Returns column index of column vector
double	distance(Array other) Returns Euclidean distance from this to other
Array	divide(Array dividend) returns componentwise divide: this/dividend
Array	divide(double dividend) scalar divide
double	dot(Array other) return dot product of this with other Operates on cells at indexes 0 ..
Set	entrySet() Returns a set view of the Entries contained in this array.
Array	multiply(Array multiplicand) returns componentwise multiply
Array	multiply(double multiplicand) scalar multiply
double	norm() returns 2 norm of vector
Array	normalize() Returns vector with euclidian distance normalized to 1.
Array	scale(double factor) Returns this * factor does not change receiver.
void	setAll(double value) sets all elements = value (in sparse matrices, sets all nonzero elements = value)
void	setColumnIndex(int column) setColumnIndex(ci).
Array	toLogSpace() Transforms the array to log space.
String	toString() Returns String representation of Array

Methods inherited from class java.lang.Object

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

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

containsKey, equals, get, iterator, newInstance, set, size

Field Detail

ci

protected int ci

Constructor Detail

AbstractArray

public AbstractArray()

Method Detail

setColumnIndex

public void setColumnIndex(int column)

setColumnIndex(ci). sets column index of column vector. the default is -1;

Specified by:

setColumnIndex in interface Array

columnIndex

public int columnIndex()

Description copied from interface: Array

Returns column index of column vector

Specified by:

columnIndex in interface Array

setAll

public void setAll(double value)

sets all elements = value (in sparse matrices, sets all nonzero elements = value)

Specified by:

setAll in interface Array

toString

public String toString()

Description copied from interface: Array

Returns String representation of Array

Specified by:

toString in interface Array

Overrides:

toString in class Object

entrySet

public Set entrySet()

Description copied from interface: Array

Returns a set view of the Entries contained in this array. Note: this differs from java.util.AbstractMap.entrySet() in that it returns a Set of Entries, rather than a set of objects.

Specified by:

entrySet in interface Array

clone

public abstract Object clone()

Description copied from interface: Array

Returns deep copy of Array

Specified by:

clone in interface Array

Overrides:

clone in class Object

add

public Array add(Array addend)

Description copied from interface: Array

Returns this + addend does not change receiver.

Specified by:

add in interface Array

scale

public Array scale(double factor)

Description copied from interface: Array

Returns this * factor does not change receiver.

Specified by:

scale in interface Array

norm

public double norm()

returns 2 norm of vector

Specified by:

norm in interface Array

normalize

public Array normalize()

Description copied from interface: Array

Returns vector with euclidian distance normalized to 1. does not change reciever.

Specified by:

normalize in interface Array

dot

public double dot(Array other)

return dot product of this with other Operates on cells at indexes 0 .. Math.min(size(),other.size())

Specified by:

dot in interface Array

distance

public double distance(Array other)

Description copied from interface: Array

Returns Euclidean distance from this to other

Specified by:

distance in interface Array

cardinality

public int cardinality()

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

Specified by:

cardinality in interface Array

multiply

public Array multiply(Array multiplicand)

returns componentwise multiply

Specified by:

multiply in interface Array

divide

public Array divide(Array dividend)

returns componentwise divide: this/dividend

Specified by:

divide in interface Array

multiply

public Array multiply(double multiplicand)

scalar multiply

Specified by:

multiply in interface Array

divide

public Array divide(double dividend)

scalar divide

Specified by:

divide in interface Array

toLogSpace

public Array toLogSpace()

Description copied from interface: Array

Transforms the array to log space. this is kind of a hack, so try to fix it later, by defining things like componentwise array functions, etc. takes the log of each component in array

Specified by:

toLogSpace in interface Array