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Re: Tensor SVD possible? - Mahout - [mail # user]
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...I don't recall that we have any code for this. On 15.03.2013 09:31, Bartholom�us Maciag wrote:...
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Author: Sebastian Schelter,
2013-03-15, 08:48
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Re: Adding a new command-line program - Mahout - [mail # dev]
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...Adding to the .props file should be enough, afaik. You should debug the first lines of MahoutDriver. Best, Sebastian On 14.03.2013 21:39, Ted Dunning wrote:...
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Author: Sebastian Schelter,
2013-03-14, 20:49
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Re: Discussion Of ML environment/MR, Mahout - Mahout - [mail # dev]
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...I have run the current ALS code on netflix some month ago, but not done a thorough benchmark. I can do this next week, when I have access to a cluster again and give some numbers, so we can ...
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Author: Sebastian Schelter,
2013-03-13, 19:41
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Re: mahout collections updates - Mahout - [mail # dev]
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...Using this code in DenseVector gives me similar performance: @Override public double dot(Vector x) { if (!x.isDense()) { return super.d...
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Author: Sebastian Schelter,
2013-03-12, 22:42
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Re: Discossuon Of ML environment/MR, Mahout - Mahout - [mail # dev]
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...On 12.03.2013 23:21, Sean Owen wrote: It's not a bad way per se, its a repartition join. Side-loading means doing a broadcast join, which is more performant but only works as long as t...
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Author: Sebastian Schelter,
2013-03-12, 22:32
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Re: mahout collections updates - Mahout - [mail # dev]
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...I wrote a small benchmark as we investigated this issue recently for computing recommendations from an ALS factorization. https://gist.github.com/sscdotopen/5147521 Here's some r...
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Author: Sebastian Schelter,
2013-03-12, 22:07
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Re: mahout collections updates - Mahout - [mail # dev]
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...I looked into DenseVector and it doesn't use any primitive collections, so ignore my last mail :) On 12.03.2013 22:16, Sebastian Schelter wrote:...
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Author: Sebastian Schelter,
2013-03-12, 21:21
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Re: mahout collections updates - Mahout - [mail # dev]
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...As a sidenote: I was kinda shocked recently, that switching from DenseVector's dot() method to a direct dot product computation gave a 3x increase in performance in org.apache.mahout.cf.tast...
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Author: Sebastian Schelter,
2013-03-12, 21:16
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Re: Discossuon Of ML environment/MR, Mahout - Mahout - [mail # dev]
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...That's a tough question. I'd say we should only consider a) or c) as I makes no sense to depend on some research prototype system that might vanish once people get their funding cut. O...
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Author: Sebastian Schelter,
2013-03-11, 21:39
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Re: Discossuon Of ML environment/MR, Mahout - Mahout - [mail # dev]
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...I spent the last months working on the Stratosphere system, which is developed by my group. It's a research prototype, but it's got so much things that we would need. It extends the Ma...
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Author: Sebastian Schelter,
2013-03-11, 20:54
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