org.petuum.jbosen.row.float_

Class SparseFloatRowUpdate

java.lang.Object

org.petuum.jbosen.row.float_.FloatColumnMap

org.petuum.jbosen.row.float_.SparseFloatColumnMap

org.petuum.jbosen.row.float_.SparseFloatRowUpdate

All Implemented Interfaces:

FloatRowUpdate, RowUpdate

public class SparseFloatRowUpdate
extends SparseFloatColumnMap
implements FloatRowUpdate

This implementation of FloatRowUpdate 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 DenseFloatRowUpdate.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
SparseFloatRowUpdate	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.float_.SparseFloatColumnMap

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

Methods inherited from class org.petuum.jbosen.row.float_.FloatColumnMap

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.float_.FloatRowUpdate

clear, get, inc, iterator, set

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

serialize

Constructor Detail

SparseFloatRowUpdate

public SparseFloatRowUpdate()

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

SparseFloatRowUpdate

public SparseFloatRowUpdate(SparseFloatRowUpdate other)

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

Parameters:

other - object to construct a deep copy of.

SparseFloatRowUpdate

public SparseFloatRowUpdate(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 SparseFloatRowUpdate 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.