# Package org.apache.ignite.ml.recommendation.util

Contains util classes used in recommendation system framework.

See: Description

- Class Summary
  Class | Description
  --- | ---
  MatrixFactorizationGradient<O extends Serializable,S extends Serializable> | Gradient of matrix factorization loss function.
  RecommendationBinaryDatasetDataBuilder | Recommendation binary dataset data builder.
  RecommendationDatasetData<O extends Serializable,S extends Serializable> | A partition `data` of a dataset required in `RecommendationTrainer`.
  RecommendationDatasetDataBuilder<K,O extends Serializable,S extends Serializable,Z extends ObjectSubjectRatingTriplet<O,S>> | A partition `data` builder that makes `SimpleDatasetData`.

## Package org.apache.ignite.ml.recommendation.util Description

Contains util classes used in recommendation system framework.

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Ignite Database and Caching Platform | : ver. 2.11.0
Release Date | : September 11 2021