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Re: Review Requests - Mahout - [mail # dev]
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...On Tue, Dec 13, 2011 at 10:41 AM, Grant Ingersoll wrote: No the point is that you can keep reviewing the code without having run the tests, make progress until it looks like you would...
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Author: Jake Mannix,
2011-12-13, 20:04
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Re: Review Requests - Mahout - [mail # dev]
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...You mean other than a web UI to see the patch, without having to download it, make sure you have a clean checkout to apply it to, then fire it up in your IDE, again making sure you have actu...
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Author: Jake Mannix,
2011-12-13, 17:44
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Re: Mahout Lanczos SVD complexity - Mahout - [mail # user]
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...On Mon, Dec 12, 2011 at 10:46 AM, Danny Bickson wrote: Almost everything in DistributedRowMatrix assumes that matrices are sparse. If they are dense, many of these operations will blow...
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Author: Jake Mannix,
2011-12-12, 18:57
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Re: Mahout Lanczos SVD complexity - Mahout - [mail # user]
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...For reference, look in DistributedRowMatrix#timesSquared(Vector), which is contained on lines 227-247. JobClient.runJob() is called only one time, running the TimesSquaredJob (a single...
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Author: Jake Mannix,
2011-12-12, 18:08
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Re: Mahout Lanczos SVD complexity - Mahout - [mail # user]
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...On Mon, Dec 12, 2011 at 10:00 AM, Danny Bickson wrote: This is not true. timesSquared() reads the data in *one* map-reduce pass. ...
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Author: Jake Mannix,
2011-12-12, 18:04
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Re: Mahout Lanczos SVD complexity - Mahout - [mail # user]
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...For a matrix with N rows, M columns, and d nonzero entries per row, and you want the top K singular vector / value pairs, then the scaling looks like this: It will take K map-re...
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Author: Jake Mannix,
2011-12-12, 17:57
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Re: Mahout Lanczos SVD complexity - Mahout - [mail # user]
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...On Mon, Dec 12, 2011 at 9:10 AM, Danny Bickson wrote: Neither of these statements are actually correct: for a rectangular matrix, if you want the top K singular vectors and values, yo...
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Author: Jake Mannix,
2011-12-12, 17:48
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Re: Minor Issues for 0.6 - Mahout - [mail # dev]
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...On Mon, Dec 5, 2011 at 3:39 PM, Grant Ingersoll wrote: I also realize I totally misunderstood this ticket. Nevermind my thoughts on its pressing nature!...
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Author: Jake Mannix,
2011-12-06, 02:22
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Re: LDA clustering example not working - Mahout - [mail # user]
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...On Mon, Dec 5, 2011 at 4:17 PM, Chris Grier wrote: Yep, if you start with "./bin/mahout cvb0 -h" you'll get the help output for the "Collapsed Variational Bayes (0th derivative a...
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Author: Jake Mannix,
2011-12-06, 00:46
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Re: Minor Issues for 0.6 - Mahout - [mail # dev]
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...On Mon, Dec 5, 2011 at 2:34 PM, Jeff Eastman wrote: This one seems pretty critical, so we better do this one! I think MAHOUT-845 can possibly be marked as resolved, given...
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Author: Jake Mannix,
2011-12-05, 22:42
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