org.apache.ignite.ml.recommendation.util

Class RecommendationBinaryDatasetDataBuilder

java.lang.Object

org.apache.ignite.ml.recommendation.util.RecommendationBinaryDatasetDataBuilder

All Implemented Interfaces:

Serializable, PartitionDataBuilder<Object,BinaryObject,EmptyContext,RecommendationDatasetData<Serializable,Serializable>>

public class RecommendationBinaryDatasetDataBuilder
extends Object
implements PartitionDataBuilder<Object,BinaryObject,EmptyContext,RecommendationDatasetData<Serializable,Serializable>>

Recommendation binary dataset data builder.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RecommendationBinaryDatasetDataBuilder(String objFieldName, String subjFieldName, String ratingFieldName) Constructs a new instance of recommendation binary dataset data builder.

Method Summary

Modifier and Type	Method and Description
RecommendationDatasetData<Serializable,Serializable>	build(LearningEnvironment env, Iterator<UpstreamEntry<Object,BinaryObject>> upstreamData, long upstreamDataSize, EmptyContext ctx) Builds a new partition data from a partition upstream data and partition context.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ignite.ml.dataset.PartitionDataBuilder

andThen, build

Constructor Detail

RecommendationBinaryDatasetDataBuilder

public RecommendationBinaryDatasetDataBuilder(String objFieldName,
                                              String subjFieldName,
                                              String ratingFieldName)

Constructs a new instance of recommendation binary dataset data builder.

Parameters:

objFieldName - Object field name.

subjFieldName - Subject field name.

ratingFieldName - Rating field name.

Method Detail

build

public RecommendationDatasetData<Serializable,Serializable> build(LearningEnvironment env,
                                                                  Iterator<UpstreamEntry<Object,BinaryObject>> upstreamData,
                                                                  long upstreamDataSize,
                                                                  EmptyContext ctx)

Builds a new partition data from a partition upstream data and partition context. Important: there is no guarantee that there will be no more than one UpstreamEntry with given key, UpstreamEntry should be thought rather as a container saving all data from upstream, but omitting uniqueness constraint. This constraint is omitted to allow upstream data transformers in DatasetBuilder replicating entries. For example it can be useful for bootstrapping.

Specified by:

build in interface PartitionDataBuilder<Object,BinaryObject,EmptyContext,RecommendationDatasetData<Serializable,Serializable>>

Parameters:

env - Learning environment.

upstreamData - Partition upstream data.

upstreamDataSize - Partition upstream data size.

ctx - Partition context.

Returns:

Partition data.