This sounds like a target leak, like your test data is actually getting copied into the training data.
On Sun, Jul 15, 2012 at 1:08 AM, Matt Mitchell <[email protected]> wrote: > One strange thing, and I'm going to dig through the MIA book tonight, > is that my user based recommendation evaluator returns 0.0 no matter > what I do. It's setup using PearsonCorrelationSimilarity, > NearestNUserNeighborhood(2), GenericUserBasedRecommender and the > AverageAbsoluteDifferenceRecommenderEvaluator. Also, my prefs do have > values, a range from 1 to 3.
