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277 discussions - 1,892 posts

  • Hi, I found my application based on mahout using 99% CPU after load testing. There is no actual requests at the moment but the CPU usage kept high. I generated several thread dump and found one ...
    Dec 4, 2009 at 10:14 am
    Dec 6, 2009 at 12:13 am
  • Just curious to know if anyone has used ( or have knowledge of using ) Restricted Boltzmann for clustering. ( Could be obvious to most of ML experts ) I am seeing some similarity between SVD/RBM as I ...
    Prasenjit mukherjeePrasenjit mukherjee
    Dec 2, 2009 at 9:44 am
    Dec 5, 2009 at 5:21 am
  • Hello, I'm a complete newbie to Mahout. I'm excited about the possibilities of this project. I'm fairly knowledgeable about OSGi technology; and I'm wondering if Apache Mahout leverages OSGi ...
    Sam ChanceSam Chance
    Dec 2, 2009 at 3:51 am
    Dec 2, 2009 at 4:33 am
  • Hello, For those living in or near NYC, you may be interested in joining (and/or presenting?) at the NYC Search & Discovery Meetup. Topics are: search, machine learning, data mining, NLP, information ...
    Otis GospodneticOtis Gospodnetic
    Dec 1, 2009 at 8:39 pm
    Dec 1, 2009 at 8:39 pm
  • Hello everybody, I'd like to discuss some issues with you regarding the 3rd layer of our proposed tuwoc-architecture: the feature extraction from the preprocessed crawled blog entries. Currently we ...
    Max HeimelMax Heimel
    Nov 29, 2009 at 9:44 pm
    Dec 2, 2009 at 7:21 pm
  • Hello everybody, having already presented the draft of our architecture, I would like now to discuss the second layer more in detail. As mentioned before we have chosen UIMA for this layer. The main ...
    Marc HoferMarc Hofer
    Nov 28, 2009 at 7:54 pm
    Dec 1, 2009 at 8:03 pm
  • Hi, I am a newbie to Hadoop and Mahout. I have configured Hadoop on my machine and tried to run mahout on this. I tried following command. $ bin/hadoop jar mahout-core-0.2-SNAPSHOT.job ...
    Rajpal, Harjeet KumarRajpal, Harjeet Kumar
    Nov 28, 2009 at 11:16 am
    Dec 4, 2009 at 8:08 am
  • hi guys, just wondering if you have a method implemeted which would calculate the covariance between two items. and the variance of an item. I looked itemSimilarities but that one does something ...
    Nov 26, 2009 at 3:15 pm
    Nov 27, 2009 at 12:10 pm
  • Hi, I have been trying to configure Mahout for using hibernate. I haven't been able to find any examples of such a configuration. Its probably the wrong way to do it but I cant even get this simple ...
    Johan FredholmJohan Fredholm
    Nov 26, 2009 at 9:39 am
    Nov 27, 2009 at 2:20 am
  • Dear All, Very early days, but I would like to announce a new Open Source project named Behemoth which we have put on Google Code under Apache License ( http://code.google.com/p/behemoth-pebble/). ...
    Julien NiocheJulien Nioche
    Nov 25, 2009 at 1:53 pm
    Nov 25, 2009 at 1:53 pm
  • Hi all, I am a newbie to Mahout. I have a question about how to incorporate some naming for cluster and points in the synthetic data cluster example. After getting the output of the synthetic data ...
    Liang ChenminLiang Chenmin
    Nov 25, 2009 at 12:17 am
    Nov 25, 2009 at 8:50 am
  • Hello, I've been using Taste for a while, but it's not scaling well, and I suspect I'm doing something wrong. When I say "not scaling well", this is what I mean: * I have 1 week's worth of data ...
    Otis GospodneticOtis Gospodnetic
    Nov 24, 2009 at 7:10 pm
    Nov 24, 2009 at 8:40 pm
  • While reading through the wiki and article material on mahout, I noticed that there was a pre-generation step where vectors were being generated from either text with Lucene or ARFF with ...
    Patterson, JoshPatterson, Josh
    Nov 24, 2009 at 3:38 pm
    Nov 24, 2009 at 4:32 pm
  • hi, Just wondering if someone could suggest me a way how to fix the train/test set and do not generate it every time I run the evaluation. I need to evaluate some algorithms, and it would be ...
    Nov 23, 2009 at 3:36 pm
    Nov 23, 2009 at 3:44 pm
  • Hi Jake, Do you intend to contribute some of the Random Indexing code ? I am working on a multi-way clustering problem and was thinking of using tensor SVD to do that. In that context was wondering ...
    Prasenjit mukherjeePrasenjit mukherjee
    Nov 23, 2009 at 4:49 am
    Nov 23, 2009 at 4:03 pm
  • Any Mahouts going to be at ScaleCamp in London? http://www.scalecamp.org.uk/ -Grant
    Grant IngersollGrant Ingersoll
    Nov 22, 2009 at 4:39 pm
    Nov 22, 2009 at 4:39 pm
  • Hi all,, Since mahout is build upon hadoop, so is there any performance comparison between the algorithms using hadoop and without using hadoop. ? Thank you. Jeff Zhang
    Jeff ZhangJeff Zhang
    Nov 22, 2009 at 6:30 am
    Nov 22, 2009 at 7:34 am
  • I've noticed that the article at: http://www.ibm.com/developerworks/java/library/j-mahout/ uses Ant while release of Mahout 0.2 uses Maven. Also, the article's included downloadable code includes ...
    Patterson, JoshPatterson, Josh
    Nov 20, 2009 at 3:17 pm
    Nov 30, 2009 at 4:48 pm
  • In Taste, GenericDataModel is a subclass of DataModel, which can be used to keep user's data. However, it seems that this model is not recommended for contexts when the performance is important. Are ...
    James JamesJames James
    Nov 20, 2009 at 4:09 am
    Nov 20, 2009 at 10:35 am
  • hi. i'm not sure if this is a bug or I do somthing wrong, but when I try to evaluate a system it returns 0 as a result. I'm using this piece of code: DataModel model = new FileDataModel(new ...
    Nov 19, 2009 at 5:32 pm
    Nov 22, 2009 at 5:21 am
  • Hi, looking at the trunk code and running the example of creating vectors from text, I get a NPE in class LuceneIterable on line 111. It seems as if the setExpectations(...) inside the TFDFMapper is ...
    Florian LeibertFlorian Leibert
    Nov 19, 2009 at 5:18 am
    Nov 19, 2009 at 6:24 am
  • Apache Mahout 0.2 has been released and is now available for public download at http://www.apache.org/dyn/closer.cgi/lucene/mahout Apache Mahout is a subproject of Apache Lucene with the goal of ...
    Grant IngersollGrant Ingersoll
    Nov 18, 2009 at 1:35 pm
    Nov 18, 2009 at 9:40 pm
  • Hi Mahout Team, Thank you for Mahout,and making it open source. I want to use the results of Mahout for a research application that I am working on.I am trying to look into and compare the results ...
    Karthikeyan palanisamyKarthikeyan palanisamy
    Nov 18, 2009 at 11:12 am
    Nov 18, 2009 at 2:25 pm
  • Hi all, I'd like to integrate taste to our system. Unfortunately I found that Taste's DataModel require me using long type as user id and item id. I don't thinkg it make sence to enforce user use ...
    Jeff ZhangJeff Zhang
    Nov 18, 2009 at 7:41 am
    Nov 18, 2009 at 10:56 am
  • Hi, I'm running the RecommenderServlet on my machine and I sending requests for different users id. For example: http://michal:57000/RecommenderServlet?userID=010232120. It usually works, and I'm ...
    Michal shmueliMichal shmueli
    Nov 17, 2009 at 7:21 pm
    Nov 18, 2009 at 12:26 pm
  • Hi all, I'm going to be giving a talk at the Bay Area ACM data mining SIG in December, and I need to finalize my topic today :) I was going to expand on my "Web mining for SEO keywords" talk from the ...
    Ken KruglerKen Krugler
    Nov 16, 2009 at 7:15 pm
    Nov 16, 2009 at 10:05 pm
  • Hi all, I start learning hbase these days. and I found we can use hbase for machine learning. In the field of machine learning, we always need to handle matrix and vector which is very fit to be ...
    Jeff ZhangJeff Zhang
    Nov 16, 2009 at 8:54 am
    Nov 17, 2009 at 8:28 pm
  • Hi, I'm trying to write a map-reduce program that will convert text documents into a format suitable for Mahout's clustering algorithms. From what I can gather, it seems like the output should be a ...
    Gregory LawrenceGregory Lawrence
    Nov 13, 2009 at 1:58 am
    Nov 14, 2009 at 7:03 am
  • Hello, Something on http://lucene.apache.org/mahout/taste.html#performance caught my attention: -XX:+NewRatio=9: Increase heap allocated to 'old' objects, which is most of them in this framework So I ...
    Otis GospodneticOtis Gospodnetic
    Nov 12, 2009 at 7:40 pm
    Nov 12, 2009 at 10:24 pm
  • Philippe Adjiman has a nice writeup of his experiences using Mahout for collaborative filtering on his blog: ...
    Isabel DrostIsabel Drost
    Nov 12, 2009 at 2:34 pm
    Nov 12, 2009 at 2:34 pm
  • As announced at ApacheCon US, the next Apache Hadoop Get Together Berlin is scheduled for December 2009. When: Wednesday December 16, 2009 at 5:00pm Where: newthinking store, Tucholskystr. 48, Berlin ...
    Isabel DrostIsabel Drost
    Nov 11, 2009 at 12:36 am
    Nov 11, 2009 at 12:36 am
  • hi,all i got some error when generate product similarity according to rating file, and there is about 250,000 recordes in rating file. it works when there is only 10,000 recordes in rating file. do ...
    Nov 9, 2009 at 2:28 am
    Nov 9, 2009 at 7:23 pm
  • I am trying to predict the probability of a user clicking on an ad based on his past browsing behaviour. I have historical data of other users past behavior along with their click through record. I ...
    Prasenjit mukherjeePrasenjit mukherjee
    Nov 7, 2009 at 7:44 am
    Nov 19, 2009 at 6:38 am
  • Hello everybody, we are a group of 6 master students of the Technical University of Berlin who are currently working on a winter term project using Mahout. Our - so called "Winter of Code" - project ...
    Max HeimelMax Heimel
    Nov 6, 2009 at 1:07 pm
    Nov 11, 2009 at 12:53 am
  • Team, For those Lucene fanatics not in Oakland this week for ApacheCon US, don't miss the FREE live video streaming, starting today: http://streaming.linux-magazin.de/en/program-apachecon-us-2009.htm ...
    Michael McCandlessMichael McCandless
    Nov 4, 2009 at 11:58 pm
    Nov 4, 2009 at 11:58 pm
  • Hi, I have problems with the GenericJDBCDataModel. For me, the functions getUsers() and getItems() return nothing, although the SQL queries used in the functions definitely do return results. All ...
    Nov 4, 2009 at 5:04 pm
    Nov 5, 2009 at 5:03 pm
  • Hi, I'm trying to evaluate the quality of the Boolean recommender. (I have no ratings in my data but only: (userId,itemId,1) 1 for all entries. I'm using this setting for the recommender: ...
    Michal shmueliMichal shmueli
    Nov 4, 2009 at 12:22 pm
    Nov 5, 2009 at 3:32 pm
  • I am trying to use eclipse to build/develop on mahout, and really don't want to include all those maven plugins. Is there any .classpath file for mahout which I can use. thanks, -Prasen
    Prasenjit mukherjeePrasenjit mukherjee
    Nov 4, 2009 at 6:49 am
    Nov 5, 2009 at 5:19 am
  • Hi, I was trying to check out a copy of mahout using the subclipse. I typed in the following link to try to create a new reposistory location, but failed. Did I do something wrong? Thanks ...
    James JamesJames James
    Nov 3, 2009 at 10:42 pm
    Nov 4, 2009 at 5:21 pm
  • Might be of interest to all you Mahouts out there... http://bixolabs.com/datasets/public-terabyte-dataset-project/ Would be cool to get this converted over to our vector format so that we can ...
    Grant IngersollGrant Ingersoll
    Nov 3, 2009 at 1:44 pm
    Nov 13, 2009 at 7:49 pm
  • Pinaki PoddarPinaki Poddar
    Nov 3, 2009 at 11:05 am
    Nov 3, 2009 at 11:05 am
  • Hi all, We are organising another open source search social evening (OSSSE?) in London on Wednesday the 18th of November. The plan is to get together and chat about search technology, from Lucene to ...
    René KrieglerRené Kriegler
    Nov 3, 2009 at 10:48 am
    Nov 3, 2009 at 12:20 pm
  • Hi, I was playing with the examples and the demo, and to my best understanding, the recommendation is based on either "user-based" or "item-based". For example, the groupLens demo only looks on ...
    Michal shmueliMichal shmueli
    Oct 29, 2009 at 12:19 pm
    Oct 29, 2009 at 1:04 pm
  • Might be interesting to you: Large-Scale Machine Learning: Parallelism and Massive Datasets http://www.select.cs.cmu.edu/meetings/biglearn09/#schedule Anyone on the Mahout mailing-lists who is ...
    Isabel DrostIsabel Drost
    Oct 29, 2009 at 8:11 am
    Oct 29, 2009 at 2:23 pm
  • Hi,today i run the example of "org.apache.mahout.cf.taste.hadoop.SlopeOnePrefsToDiffsJob" in TasteCommandLine.html root@master:/home/zhoufeng/newdisk/hadoop-0.19.2# bin/hadoop jar ...
    Oct 29, 2009 at 3:00 am
    Oct 29, 2009 at 10:55 am
  • (cross posted to many user lists, please confine reply to general@lucene) There will be a Lucene meetup next week at ApacheCon in Oakland, CA on Tuesday, November 3rd. Meetups are free (the rest of ...
    Chris HostetterChris Hostetter
    Oct 28, 2009 at 11:09 am
    Oct 28, 2009 at 11:09 am
  • Hi there In core/pom.xml there is no version tag for: <dependency <groupId org.apache.lucene</groupId <artifactId lucene-analyzers</artifactId </dependency <dependency <groupId ...
    Adil AijazAdil Aijaz
    Oct 27, 2009 at 11:04 pm
    Oct 27, 2009 at 11:04 pm
  • Dear list-members, I am currently working on a market analysis wrt to recommendation technology and I have some non-tech questions I have so far tracked down 2 serious frameworks that are open and ...
    Siem VaessenSiem Vaessen
    Oct 27, 2009 at 2:52 pm
    Nov 11, 2009 at 5:07 am
  • Hi, I'm trying to utilize the taste demo (grouplens) with my data which consists of ~700,000 users with ~10M ratings. I'm using an Hadoop cluster with 4 machines and also set the ...
    Michal shmueliMichal shmueli
    Oct 27, 2009 at 9:44 am
    Oct 27, 2009 at 10:26 am
  • At first,i have built a Lucene index in my directory "/home/zhoufeng/newdisk/newindex",then i want to create Vectors from the index files. then i met a problem ...
    Oct 21, 2009 at 8:05 am
    Oct 22, 2009 at 7:34 pm
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