public abstract class AbstractItemBasedItemRecommender extends Object implements ItemBasedItemRecommender
Base class to make it easier to implement ItemBasedItemRecommender. All methods delegate to ItemBasedItemRecommender.recommendRelatedItemsWithDetails(Set, int, Set, Set).
| Constructor and Description |
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AbstractItemBasedItemRecommender() |
| Modifier and Type | Method and Description |
|---|---|
List<Long> |
recommendRelatedItems(long reference)
Recommend all possible items for a reference item using the default exclude set.
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List<Long> |
recommendRelatedItems(long reference,
int n)
Recommend up to n possible items for a reference item using the default exclude set.
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List<Long> |
recommendRelatedItems(Set<Long> basket)
Recommend all possible items for a set of reference items using the default exclude set.
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List<Long> |
recommendRelatedItems(Set<Long> basket,
int n)
Recommend up to n items for a set of reference items using the default exclude set.
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List<Long> |
recommendRelatedItems(Set<Long> basket,
int n,
Set<Long> candidates,
Set<Long> exclude)
Produce a set of recommendations for the item.
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitrecommendRelatedItemsWithDetailspublic List<Long> recommendRelatedItems(long reference, int n)
Recommend up to n possible items for a reference item using the default exclude set.
This implementation delegates to recommendRelatedItems(Set, int).
recommendRelatedItems in interface ItemBasedItemRecommenderreference - The reference item.n - The number of items to recommend (< 0 for unlimited).ItemBasedItemRecommender.recommendRelatedItems(Set, int, Set, Set)public List<Long> recommendRelatedItems(long reference)
Recommend all possible items for a reference item using the default exclude set.
This implementation delegates to recommendRelatedItems(long, int) with a size of -1.
recommendRelatedItems in interface ItemBasedItemRecommenderreference - The reference item.ItemBasedItemRecommender.recommendRelatedItems(Set, int, Set, Set)public List<Long> recommendRelatedItems(Set<Long> basket, int n, @Nullable Set<Long> candidates, @Nullable Set<Long> exclude)
Produce a set of recommendations for the item. This method allows the recommendations to be constrained by both a candidate set and an exclude set. The exclude set is applied to the candidate set, so the final effective candidate set is candidates minus exclude.
This implementation delegates to ItemBasedItemRecommender.recommendRelatedItemsWithDetails(Set, int, Set, Set).
recommendRelatedItems in interface ItemBasedItemRecommenderbasket - The reference items.n - The number of ratings to return. If negative, no specific size is requested.candidates - A set of candidate items which can be recommended. If null, all items are considered candidates.exclude - A set of items to be excluded. If null, a default exclude set is used.public List<Long> recommendRelatedItems(Set<Long> basket, int n)
Recommend up to n items for a set of reference items using the default exclude set.
This implementation delegates to recommendRelatedItems(Set, int, Set, Set) with default sets.
recommendRelatedItems in interface ItemBasedItemRecommenderbasket - The reference items.n - The number of recommendations to return (< 0 for unlimited).ItemBasedItemRecommender.recommendRelatedItems(Set, int, Set, Set)public List<Long> recommendRelatedItems(Set<Long> basket)
Recommend all possible items for a set of reference items using the default exclude set.
This implementation delegates to recommendRelatedItems(Set, int) with a length of -1.
recommendRelatedItems in interface ItemBasedItemRecommenderbasket - The reference items.ItemBasedItemRecommender.recommendRelatedItems(Set, int, Set, Set)