org.petuum.jbosen.row.int_

Class SparseIntRowUpdate

java.lang.Object

org.petuum.jbosen.row.int_.IntColumnMap

org.petuum.jbosen.row.int_.SparseIntColumnMap

org.petuum.jbosen.row.int_.SparseIntRowUpdate

All Implemented Interfaces:

IntRowUpdate, RowUpdate

public class SparseIntRowUpdate
extends SparseIntColumnMap
implements IntRowUpdate

This implementation of IntRowUpdate 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 DenseIntRowUpdate.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
SparseIntRowUpdate	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.int_.SparseIntColumnMap

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

Methods inherited from class org.petuum.jbosen.row.int_.IntColumnMap

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.int_.IntRowUpdate

clear, get, inc, iterator, set

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

serialize

Constructor Detail

SparseIntRowUpdate

public SparseIntRowUpdate()

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

SparseIntRowUpdate

public SparseIntRowUpdate(SparseIntRowUpdate other)

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

Parameters:

other - object to construct a deep copy of.

SparseIntRowUpdate

public SparseIntRowUpdate(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 SparseIntRowUpdate 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.