zenogantner/MyMediaLite — comment on commit b83028e3c0f8cc7f5f6d9fd3028eb0f8c6f9bcd6
File: src/MyMediaLite/RatingPrediction/UserItemBaseline.cs line 92
By zenogantner:

You are right, this is a bug.
I have fixed it, and will commit it soon.

Thank you for pointing this out.

I wish you a happy new year, too!

Best,
Zeno

On Sun, Jan 1, 2012 at 8:48 AM, Tom Dong

wrote:
> Hi, I am reading through some of the code to learn about the algorithms - they are very clear and informative. Yet I am a little confused here and would really appreciate it if you could explain a little bit.:)
>
> It seems that the way you solve the least square problem is by fixing either item biases or user biases in tern and optimizing the other. But why aren't user_biases and item_biases' value set to zero before every time they are updated? Is it some "smoothing" technique to prevent the value from changing too much?
>
> Thanks a lot, and happy new year:)
>
> ---
> Reply to this email directly or view it on GitHub:
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MyMediaLite Recommender System Library: http://ismll.de/mymedialite