io.kgraph.library.cf

Class Als.InitUsersComputation

java.lang.Object

io.kgraph.library.cf.Als.InitUsersComputation

All Implemented Interfaces:

ComputeFunction<CfLongId,org.jblas.FloatMatrix,Float,FloatMatrixMessage>

Enclosing class:

Als

public class Als.InitUsersComputation
extends Object
implements ComputeFunction<CfLongId,org.jblas.FloatMatrix,Float,FloatMatrixMessage>

This computation class is used to initialize the factors of the user nodes in the very first superstep, and send the first updates to the item nodes.

Author:

dl

Nested Class Summary

Nested classes/interfaces inherited from interface io.kgraph.pregel.ComputeFunction

ComputeFunction.Aggregators, ComputeFunction.Callback<K,VV,EV,Message>, ComputeFunction.InitCallback, ComputeFunction.MasterCallback, ComputeFunction.ReadAggregators, ComputeFunction.ReadWriteAggregators

Constructor Summary

Constructors

Constructor and Description
InitUsersComputation()

Method Summary

Modifier and Type	Method and Description
void	compute(int superstep, VertexWithValue<CfLongId,org.jblas.FloatMatrix> vertex, Iterable<FloatMatrixMessage> messages, Iterable<EdgeWithValue<CfLongId,Float>> edges, ComputeFunction.Callback<CfLongId,org.jblas.FloatMatrix,Float,FloatMatrixMessage> cb) The function for computing a new vertex value or sending messages to the next superstep.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.kgraph.pregel.ComputeFunction

init, masterCompute, postSuperstep, preSuperstep

Constructor Detail

InitUsersComputation

public InitUsersComputation()

Method Detail

compute

public void compute(int superstep,
                    VertexWithValue<CfLongId,org.jblas.FloatMatrix> vertex,
                    Iterable<FloatMatrixMessage> messages,
                    Iterable<EdgeWithValue<CfLongId,Float>> edges,
                    ComputeFunction.Callback<CfLongId,org.jblas.FloatMatrix,Float,FloatMatrixMessage> cb)

Description copied from interface: ComputeFunction

The function for computing a new vertex value or sending messages to the next superstep.

Specified by:

compute in interface ComputeFunction<CfLongId,org.jblas.FloatMatrix,Float,FloatMatrixMessage>

Parameters:

superstep - the count of the current superstep

vertex - the current vertex with its value

messages - a Map of the source vertex and the message sent from the previous superstep

edges - the adjacent edges with their values

cb - a callback for setting a new vertex value or sending messages to the next superstep