org.petuum.jbosen.row.double_

Class SparseDoubleRow

java.lang.Object

org.petuum.jbosen.row.double_.DoubleColumnMap

org.petuum.jbosen.row.double_.SparseDoubleColumnMap

org.petuum.jbosen.row.double_.SparseDoubleRow

All Implemented Interfaces:

DoubleRow, Row

public class SparseDoubleRow
extends SparseDoubleColumnMap
implements DoubleRow

This implementation of DoubleRow 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 DenseDoubleRow.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
SparseDoubleRow	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.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_.DoubleRow

clear, get, inc, iterator, set

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

serialize

Constructor Detail

SparseDoubleRow

public SparseDoubleRow()

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

SparseDoubleRow

public SparseDoubleRow(SparseDoubleRow other)

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

Parameters:

other - object to construct a deep copy of.

SparseDoubleRow

public SparseDoubleRow(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 SparseDoubleRow 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.