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java.lang.Objectorg.apache.mahout.cf.taste.impl.recommender.AbstractRecommender
org.apache.mahout.cf.taste.impl.recommender.GenericItemBasedRecommender
org.apache.mahout.cf.taste.impl.recommender.knn.KnnItemBasedRecommender
public final class KnnItemBasedRecommender
The weights to compute the final predicted preferences are calculated using linear interpolation, through
an Optimizer
. This algorithm is based in the paper of Robert M. Bell and Yehuda Koren in ICDM '07.
Nested Class Summary |
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Nested classes/interfaces inherited from class org.apache.mahout.cf.taste.impl.recommender.GenericItemBasedRecommender |
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GenericItemBasedRecommender.MostSimilarEstimator |
Constructor Summary | |
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KnnItemBasedRecommender(DataModel dataModel,
ItemSimilarity similarity,
Optimizer optimizer,
int neighborhoodSize)
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Method Summary | |
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protected float |
doEstimatePreference(long theUserID,
long itemID)
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Methods inherited from class org.apache.mahout.cf.taste.impl.recommender.GenericItemBasedRecommender |
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estimatePreference, getSimilarity, mostSimilarItems, mostSimilarItems, mostSimilarItems, mostSimilarItems, recommend, recommendedBecause, refresh, toString |
Methods inherited from class org.apache.mahout.cf.taste.impl.recommender.AbstractRecommender |
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getAllOtherItems, getDataModel, recommend, removePreference, setPreference |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.apache.mahout.cf.taste.recommender.Recommender |
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getDataModel, recommend, removePreference, setPreference |
Constructor Detail |
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public KnnItemBasedRecommender(DataModel dataModel, ItemSimilarity similarity, Optimizer optimizer, int neighborhoodSize)
Method Detail |
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protected float doEstimatePreference(long theUserID, long itemID) throws TasteException
doEstimatePreference
in class GenericItemBasedRecommender
TasteException
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