Dear sir, Here is Liang Mingqiang, an undergraduate student, highly interested in Recommender System and Mahout. I have implete Non-negative Matrix Factorization(NMF) and Probabilistic Matrix Factorization(PMF) method and pull request my code for further comment.
I test my code on my computer using movielens dataset and get reasonable result. Do I need to write and submit a test module for my code. Just because I need dataset for my test, can I add some text files in the test package? In addition, Binary Matrix Factorization seems(BMF) very interesting, I want contribute my BMF code for Mahout in the next step. Last, but not least, Minhash and SimHash are very popular and useful methods in Recommender System. But I look through the source code of Mahout, there seems no Minhash and SimHash method. Does it mean those methods haven't been contributed or just because I haven't check the source code carefully. If those two methods have benn contributed, is there anyone willing to tell me the path. Thank you! Looking forward, ---- Liang Mingqiang
