org.petuum.jbosen.row.int_

Class SparseIntRow

java.lang.Object

org.petuum.jbosen.row.int_.IntColumnMap

org.petuum.jbosen.row.int_.SparseIntColumnMap

org.petuum.jbosen.row.int_.SparseIntRow

All Implemented Interfaces:

IntRow, Row

public class SparseIntRow
extends SparseIntColumnMap
implements IntRow

This implementation of IntRow 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 DenseIntRow.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
SparseIntRow	getCopy() Returns a deep copy of this row.
void	inc(RowUpdate rowUpdate) Increment this row 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_.IntRow

clear, get, inc, iterator, set

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

serialize

Constructor Detail

SparseIntRow

public SparseIntRow()

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

SparseIntRow

public SparseIntRow(SparseIntRow other)

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

Parameters:

other - object to construct a deep copy of.

SparseIntRow

public SparseIntRow(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 SparseIntRow getCopy()

Returns a deep copy of this row.

Returns:

deep copy of this row.

inc

public void inc(RowUpdate rowUpdate)

Increment this row using a RowUpdate object.

Specified by:

inc in interface Row

Parameters:

rowUpdate - the RowUpdate object to apply to this row.