org.petuum.jbosen.row.double_

Class SparseDoubleRowUpdate

java.lang.Object

org.petuum.jbosen.row.double_.DoubleColumnMap

org.petuum.jbosen.row.double_.SparseDoubleColumnMap

org.petuum.jbosen.row.double_.SparseDoubleRowUpdate

All Implemented Interfaces:

DoubleRowUpdate, RowUpdate

public class SparseDoubleRowUpdate
extends SparseDoubleColumnMap
implements DoubleRowUpdate

This implementation of DoubleRowUpdate assumes a sparse set of columns, ie. column IDs can be any int value. In general, this class is less CPU and memory efficient than DenseDoubleRowUpdate.

Constructor Summary

Constructors

Constructor and Description
SparseDoubleRowUpdate() Construct a new object, this object initially contains no columns (ie.
SparseDoubleRowUpdate(java.nio.ByteBuffer buffer) Construct an object by de-serializing from a ByteBuffer object.
SparseDoubleRowUpdate(SparseDoubleRowUpdate other) Copy constructor, constructs a new, deep copy of the argument.

Method Summary

Modifier and Type	Method and Description
SparseDoubleRowUpdate	getCopy() Returns a deep copy of this row update.
void	inc(RowUpdate rowUpdate) Increment this row update using a RowUpdate object.

Methods inherited from class org.petuum.jbosen.row.double_.SparseDoubleColumnMap

clear, contains, get, inc, iterator, map, serialize, set, size

Methods inherited from class org.petuum.jbosen.row.double_.DoubleColumnMap

incAll

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.petuum.jbosen.row.double_.DoubleRowUpdate

clear, get, inc, iterator, set

Methods inherited from interface org.petuum.jbosen.row.RowUpdate

serialize

Constructor Detail

SparseDoubleRowUpdate

public SparseDoubleRowUpdate()

Construct a new object, this object initially contains no columns (ie. all columns are implicitly zero).

SparseDoubleRowUpdate

public SparseDoubleRowUpdate(SparseDoubleRowUpdate other)

Copy constructor, constructs a new, deep copy of the argument.

Parameters:

other - object to construct a deep copy of.

SparseDoubleRowUpdate

public SparseDoubleRowUpdate(java.nio.ByteBuffer buffer)

Construct an object by de-serializing from a ByteBuffer object.

Parameters:

buffer - the ByteBuffer containing the serialized data.

Method Detail

getCopy

public SparseDoubleRowUpdate getCopy()

Returns a deep copy of this row update.

Returns:

deep copy of this row update.

inc

public void inc(RowUpdate rowUpdate)

Increment this row update using a RowUpdate object.

Specified by:

inc in interface RowUpdate

Parameters:

rowUpdate - the RowUpdate object to apply to this row update.