[MAHOUT-1124] Deprecate ununsed recommenders

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8
• Fix Version/s: 0.8
• Assignee: Sean R. Owen
• Reporter: Sebastian Schelter
• Created: 07/Dec/12 08:56
• Updated: 31/Jan/24 22:11
• Resolved: 07/Dec/12 09:03

Description

Deprecating some recommenders for the following reasons:

org.apache.mahout.cf.taste.impl.recommender.svd.FunkSVDFactorizer

RatingSGDFactorizer should be learning faster and has a nicer model as
it includes user/item biases

org.apache.mahout.cf.taste.impl.recommender.svd.ImplicitLinearRegressionFactorizer

Seems to be using the same model as ALSWRFactorizer, however there are
no tests and ALSWR can handle more explicit and implicit feedback

org.apache.mahout.cf.taste.impl.recommender.TreeClusteringRecommender
org.apache.mahout.cf.taste.impl.recommender.TreeClusteringRecommender2
org.apache.mahout.cf.taste.impl.recommender.knn

I don't recall anybody using those or asking about them the last years.