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Re: IntelliJ license keys - Mahout - [mail # dev]
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...Yes this was also news to me and it took a few round trips of emails to clarify. I had not actually seen a "Mahout" license but was listed as the point of contact. I was left with the impres...
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Author: Sean Owen,
2013-04-19, 08:02
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Re: "Error creating assembly archive job: error in opening zip file" - Mahout - [mail # user]
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...Probably a corrupt download inside Maven. Delete ~/.m2/repository entirely On Apr 19, 2013 12:23 AM, "Dmitriy Lyubimov" wrote: ...
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Author: Sean Owen,
2013-04-18, 23:25
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Re: Performance of ALS - Mahout - [mail # dev]
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...Good lead -- from https://github.com/mikiobraun/jblas/blob/master/src/main/java/org/jblas/Solve.java it looks like it's an SVD. Definitely took a search to figure out what 'gelsd' does in LA...
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Author: Sean Owen,
2013-04-18, 21:07
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Re: Performance of ALS - Mahout - [mail # dev]
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...I'm always interested in optimizing the bit where you solve Ax=B which I so recently went on about. That's a dense-matrix problem. Is there a QR decomposition available? I tried gettin...
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Author: Sean Owen,
2013-04-18, 20:56
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IntelliJ license keys - Mahout - [mail # dev]
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...As you may know, JetBrains gives out IntelliJ licenses to Apache open source project committers (and other open source devs too). You can request one, but, I've learned that they actually in...
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Author: Sean Owen,
2013-04-18, 10:08
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Re: Boosting User-Based with the user's attributes - Mahout - [mail # user]
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...If all of your similarities are a product like this, then they're all "low". In a relative sense this is fine. But this is also why I proposed a geometric mean instead. For example the geome...
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Author: Sean Owen,
2013-04-17, 15:00
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Re: Cannot resolve symbol 'OpenIntObjectHashMap' - Mahout - [mail # dev]
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...It is available in the IDE because it will pick up the Maven project but you need to bade your project on Maven. On Apr 16, 2013 9:00 PM, "Andrew Musselman" wrote: ...
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Author: Sean Owen,
2013-04-16, 20:03
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Re: Boosting User-Based with the user's attributes - Mahout - [mail # user]
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...Of course it's not meaningless. They provide a basis for ranking items, so you can return top-K recommendations. If it's normally based on similarity and ratings -- and you have no ratings -...
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Author: Sean Owen,
2013-04-16, 14:40
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Re: Boosting User-Based with the user's attributes - Mahout - [mail # user]
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...In the usual recommender, the output is a weighted average of ratings. In a model where there are no ratings, this has no meaning -- everything is "1" implicitly. So the output is something ...
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Author: Sean Owen,
2013-04-16, 14:09
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Re: Boosting User-Based with the user's attributes - Mahout - [mail # user]
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...That shouldn't be possible, are you sure? it's 1 - 1/(1+LLR) where LLR is nonnegative. Similarities are in [-1,1] and some are in [0,1]. On Tue, Apr 16, 2013 at 2:51 PM, Agata Filiana ...
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Author: Sean Owen,
2013-04-16, 13:58
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