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COMP 4332 Tutorial 10 April 12 Yin Zhu yinz@cset.hk

CF tools. COMP 4332 Tutorial 10 April 12 Yin Zhu yinz@cse.ust.hk. Models & Tools. KNN Models Implement yourself Matrix Factorization Models Probabilistic MF [ DEMO ] Factorization machines [ DEMO ]. KNN Model. Similar-User based Prediction: Similar-Item based Prediction:.

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COMP 4332 Tutorial 10 April 12 Yin Zhu yinz@cset.hk

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  1. CF tools COMP 4332 Tutorial 10 April 12 Yin Zhu yinz@cse.ust.hk

  2. Models & Tools • KNN Models • Implement yourself • Matrix Factorization Models • Probabilistic MF [DEMO] • Factorization machines [DEMO]

  3. KNN Model • Similar-User based Prediction: • Similar-Item based Prediction: Neighborhood similarity Base rating Normalization factor

  4. Matrix Factorization

  5. Predicting missing values as recommendation

  6. k n n VT k X U m m Matrix Factorization Model Item parameters User parameters Base Ratings

  7. PMF Demo • Matlab code: • http://www.mit.edu/~rsalakhu/BPMF.html • Implement PMF & Bayesian PMF • PMF is much faster than BPMF

  8. Factorization Machine Demo • libFM, its manual and paper

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