/// <summary>
/// Initializes a new instance of the <see cref="MahoutLazyListPredictionContextBase{TQueryEntity,TResultEntity}"/> class.
/// </summary>
/// <param name="recommender">The recommender used to actually perform the queries.</param>
/// <param name="maxPredictionListSize">The maximum size of the prediction list.</param>
protected MahoutLazyListPredictionContextBase(
MahoutRecommender <TInstanceSource> recommender, int maxPredictionListSize)
: base(maxPredictionListSize)
{
this.Recommender = recommender;
this.Queries = new Dictionary <TQueryEntity, IEnumerable <TResultEntity> >();
}
/// <summary>
/// Creates an instance of the Mahout recommender using the settings from this configuration element.
/// </summary>
/// <param name="mapping">The mapping for the recommender being created.</param>
/// <returns>An instance of the Mahout recommender.</returns>
public override IRecommender <SplitInstanceSource <RecommenderDataset>, User, Item, int, RatingDistribution, DummyFeatureSource> Create(
IStarRatingRecommenderMapping <SplitInstanceSource <RecommenderDataset>, RatedUserItem, User, Item, int, DummyFeatureSource, Vector> mapping)
{
var recommender = MahoutRecommender <SplitInstanceSource <RecommenderDataset> > .Create(mapping);
recommender.Settings.RatingSimilarity = this.RatingSimilarity.Value;
recommender.Settings.RatingPredictionAlgorithm = this.RatingPredictionAlgorithm.Value;
recommender.Settings.MissingRatingPredictionAlgorithm = this.MissingRatingPredictionAlgorithm.Value;
recommender.Settings.UserNeighborhoodSize = this.UserNeighborhoodSize.Value;
recommender.Settings.TraitCount = this.TraitCount.Value;
recommender.Settings.IterationCount = this.IterationCount.Value;
return(recommender);
}
/// <summary>
/// Initializes a new instance of the <see cref="LazyFindRelatedItemsContext"/> class.
/// </summary>
/// <param name="recommender">The recommender used to actually perform the queries.</param>
/// <param name="maxRelatedItemCount">The maximum number of related items to return for every item.</param>
public LazyFindRelatedItemsContext(
MahoutRecommender <TInstanceSource> recommender, int maxRelatedItemCount)
: base(recommender, maxRelatedItemCount)
{
}