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Package org.apache.mahout.cf.taste.hadoop.cooccurence
Class Summary
Bigram
Bigram.Comparator
A Comparator that compares serialized Bigrams.
Bigram.FirstGroupingComparator
Compare only the first part of the bigram, so that reduce is called once for each value of the first part.
Bigram.Frequency
A wrapper class that associates pairs with frequency (Occurences)
ItemBigramGenerator
ItemBigramGenerator.UserItemMapper
ItemBigramGenerator.UserItemReducer
ItemSimilarityEstimator
This class feeds into all the item bigrams generated with ItemBigramGenerator.
ItemSimilarityEstimator.FirstPartitioner
Partition based on the first part of the bigram.
ItemSimilarityEstimator.ItemItemCombiner
ItemSimilarityEstimator.ItemItemMapper
Output K -> (item1, item2), V -> ONE
ItemSimilarityEstimator.ItemItemReducer
All sorted bigrams for item1 are recieved in reduce.
TupleWritable
TupleWritable.Field
UserItemJoiner
UserItemJoiner.JoinItemMapper
UserItemJoiner.JoinItemUserReducer
UserItemJoiner.JoinUserMapper
UserItemRecommender
UserItemRecommender.RecommenderMapper
UserItemRecommender.RecommenderReducer
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