Tagged Questions

2
votes
0answers
49 views

Collaborative filtering through matrix factorization with logistic loss function

Consider collaborative filtering problem. We have matrix $M$ of size #users * #items. $M_{i,j} = 1$ if user i likes item j, $M_{i,j} = 0$ if user i dislikes item j and $M_{i,j}=?$ if there is no data ...
-1
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1answer
549 views

How to learn Data Analysis? [closed]

I completed the ml-class offered by Prof Andrew Ng last fall I started trying one of the problems in Kaggle When I fit a logistic Regression, the algorithm gave me poor results. I saw that people do ...
1
vote
0answers
93 views

Evaluation methods for personalized recommendation

I am currently trying to verify and evaluate a personalized recommender system I am working on, which seems like a huge task. Evaluating a static recommender system is rather easy and can be done with ...