|
||||||||||
PREV PACKAGE NEXT PACKAGE | FRAMES NO FRAMES |
Class Summary | |
---|---|
AggregateAndRecommendReducer | computes prediction values for each user |
ItemFilterAsVectorAndPrefsReducer | we use a neat little trick to explicitly filter items for some users: we inject a NaN summand into the preference
estimation for those items, which makes AggregateAndRecommendReducer
automatically exclude them |
ItemFilterMapper | map out all user/item pairs to filter, keyed by the itemID |
ItemIDIndexMapper | |
ItemIDIndexReducer | |
PartialMultiplyMapper | maps similar items and their preference values per user |
PrefAndSimilarityColumnWritable | |
RecommenderJob | Runs a completely distributed recommender job as a series of mapreduces. |
SimilarityMatrixRowWrapperMapper | maps a row of the similarity matrix to a VectorOrPrefWritable
actually a column from that matrix has to be used but as the similarity matrix is symmetric,
we can use a row instead of having to transpose it |
ToUserVectorsReducer | Input |
ToVectorAndPrefReducer | |
UserVectorSplitterMapper | |
VectorAndPrefsWritable | |
VectorOrPrefWritable |
Enum Summary | |
---|---|
ToUserVectorsReducer.Counters |
|
||||||||||
PREV PACKAGE NEXT PACKAGE | FRAMES NO FRAMES |