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Re: Which database should I use with Mahout - Mahout - [mail # user]
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...Okay i got it! I also always have used a basic form of dithering but we always called it shuffle since it basically was / is Collections.shuffle on a bigger list of results and therefore doe...
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Author: Johannes Schulte,
2013-05-22, 20:04
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Re: mahout ssvd tuning problem - Mahout - [mail # user]
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...I looked, and this job already uses a combiner called OuterProductCombiner. In fact it was right there in the stack trace, oops. At least, it shows this is happening in the mapper and ...
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Author: Sean Owen,
2013-05-22, 17:54
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Re: mahout ssvd tuning problem - Mahout - [mail # user]
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...i am actually not sure how to manipulate use of combiners in hadoop. All i can say that the code does make extensive use of combiners but they were always "on" for me. I had no idea one migh...
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Author: Dmitriy Lyubimov,
2013-05-22, 17:35
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Re: Hidden Markov Models and time series - 2 questions - Mahout - [mail # user]
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...HMM's could be useful, but you have to define things a bit differently. First of all, HMM's want symbolic inputs and want to give you symbolic outputs. You don't get to see the i...
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Author: Ted Dunning,
2013-05-22, 15:41
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Hidden Markov Models and time series - 2 questions - Mahout - [mail # user]
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...I'm not knowledgable of statistics nor data analysis, so please be gentle! I am using Mahout to predict time series out of control state. I've had a fair amount of success classifying with S...
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Author: yikes aroni,
2013-05-22, 15:20
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Re: mahout ssvd tuning problem - Mahout - [mail # user]
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...I mean you would have to write one and modify the code to use it. I don't know this job well enough to know whether it's possible or not though. At least, this is getting directly at reducin...
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Author: Sean Owen,
2013-05-22, 13:32
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Re: mahout ssvd tuning problem - Mahout - [mail # user]
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...Yes, I was manipulating io.sort.factor too, it speeds up reducer, values around 30 gives good result for me. But my problem is not reducer, my problem is Bt-job map taks that spills &n...
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Author: Jakub Pawłowski,
2013-05-22, 13:17
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Re: mahout ssvd tuning problem - Mahout - [mail # user]
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...I feel like I've seen this too and it's just a bug. You're not running out of memory. Are you also setting io.sort.factor? that can help too. You might try as high as 100. Also h...
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Author: Sean Owen,
2013-05-22, 12:59
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Re: Feature vector generation from Bag-of-Words - Mahout - [mail # user]
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...See inline. ________________________________ From: Stuti Awasthi To: "'[EMAIL PROTECTED]'" Sent: Wednesday, May 22, 2013 7:02 AM Subject: RE: Feature vector ...
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Author: Suneel Marthi,
2013-05-22, 12:43
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mahout ssvd tuning problem - Mahout - [mail # user]
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...Hi, I'm trying to tune mahout ssvd job to not spill so much, I'm trying to tune io.sort.mb 1047 but when I try to put any bigger value, ie. &nb...
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Author: Jakub Pawłowski,
2013-05-22, 11:32
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