AbstractFactorizer (in package
org.apache.mahout.cf.taste.impl.recommender.svd) does not currently
implement refreshable. This makes it difficult to implement refresh in
SVDRecommender (currently a "ToDo" which I'd like to fix).
There are two options I can see:
1) remember which Factorizer Class has been used in SVDRecommender and
create a new instance when you call refresh
2) make AbstractFactorizer implement Refreshable
I would prefer option 2 but this would require minor changes to one of
the existing sub-classes (ExpectationMaximizationSVDFactorizer - some
code would have to be moved from the constructor to the factorize method).
Does anyone else have a preference or see a better option?
Chris
