mahout

Using the Apache Mahout machine learning libraries

I've been working with the Apache Mahout machine learning libaries in my free time a bit over the past few weeks. I'm curious to hear about how others are using these libraries. ...

Has anybody tried to check out mahout (SVN) from eclipse (subclipse)

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 https://svn.apache.org/repos/asf/lucene/mahout/trunk The error message is below "Error validating location: "org.tigris.subversion.javahl.ClentExc...

Recommendation Engines for Java applications

Hi I was wondering to know if there is any open sources recommendation engines available? It should suggest some think like amazon and netflix. I heard a framework "Apache Mahout - Taste". I am trying it next week. It would be great if we you can share your valuable thoughts. Thanks ...

mahout lucene document clustering howto?

I'm reading that i can create mahout vectors from a lucene index that can be used to apply the mahout clustering algorithms. http://cwiki.apache.org/confluence/display/MAHOUT/Creating+Vectors+from+Text I would like to apply K-means clustering algorithm in the documents in my Lucene index, but it is not clear how can i apply this algorit...

Mahout Plugin for ruby on rails.

I want to use Apache Mahout in my project on Ruby on Rails for implementing recommendations and collaborative filtering. In Particular my requirements are: suggesting related tags. suggesting related articles. based on user's preferences prompt him for review of articles. based on geographical location, and other meta information of a ...

programming in mahout

what is the step-by-step procedure for executing a program in mahout ...

Classpath compiles correctly, but will not run. What am I missing

Greetings, I'm playing around with mahout, I've written a basic java class which imports some of the libraries. It seems my classpath is correct when compiling, I get no errors or complaints at all. However when I run the compiled class I get an exception saying... Exception in thread "main" java.lang.NoClassDefFoundError: Test Cau...

ClassNotFoundException error in implementing Bayesian algorithm in Apache Mahout on Hadoop

Hi, I have a problem in executing the Bayesian algorithm in Mahout. I built it with Maven and the job file is in target directory. When run from terminal using hadoop, I'm getting the ClassNotFoundException error. What should be done? $HADOOP_HOME/bin/hadoop jar mahout-core-0.3-SNAPSHOT.job org.apache.mahout.classifier.bayes.mapre...

How to use Mahout in a Windows environment?

I am trying to use Mahout in an application running on Windows. I want to build clusters from a lucene index using k-means. As soon as I have to create sequence files (creating vectors from a lucene index), I get a Hadoop-Exception, since Hadoop makes command line calls to programs unknown in a Windows environment (e.g. chmod). Running ...

Colloborative filtering

How can i use SVD algorithm in mahout for producing recommendations on explicit binary data-set (eg. a user purchased or not but no specific ratings ) in an e-commerce domain ? Also what algorithms aim at producing recommendations on such binary data-sets ? Thanks in advance. Pranay Kumar, 2nd yr,cse ...

Mahout Recommendations on Binary data

Hi, I'm a newbie to mahout.My aim is to produce recommendations on binary user purchased data.So i applied item-item similarity model in computing top N recommendations for movie lens data assuming 1-3 ratings as a 0 and 4-5 ratings as a 1.Then i tried evaluating my recommendations with the ratings in the test-data but hardly there have...

Apache Mahout Advices?

Have you implemented Apache Mahout recommendation engine? any advices you can share? any other sites you know that use Mahout? thanks! ...

Using Apache Mahout with Ruby on Rails

I have a ruby on rails application. I have the idea of implementing recommendations in the application. I came to know about Apache Mahout through stackoverflow. Now, If I have to use Mahout, what are the stuff that I have to do. Since it is a Java library, I am not clearly sure how to use it in an Ruby on Rails application. I have a cou...

recommendation system data collection methodology

i am building a recommendation system in my application and i am probably going to use apache mahout, i ve to collect a big dataset, it ll be collected over a period of time...so which one is least expensive between collecting it in some sort of log file vs collecting in a DB and exporting it when i need it ...

Just how much Java does one need to use Hadoop and Mahout effectively?

I'm a PHP developer. Let's just get that out of the way now. But Hadoop – and Mahout in particular – have piqued my interest. I'm ready to take the dive into Java in order to use them. So from people experience enough to know, just how much Java will I need to be able to use these effectively? From what I've seen, programming mappers/re...

Datasets for Apache Mahout

I am looking for datasets that can be used for implementing recommendation system usecase of Apache Mahout. I know of only MovieLens Data Sets from GroupLens Research group. Anyone knows any other datasets that can be used for recommendation system implementation? I am particularly interested in item-based data sets though other datase...

Running Mahout from the command line (CLASSPATH)

Complied Mahout successfully under Windows using Maven. I'm trying to run one of the examples from the command line and I don't get what I am doing wrong. Seems like a CLASSPATH problem. Let's say I want to run the GroupLensRecommenderEvaluatorRunner example. I go to the folder with the GroupLensRecommenderEvaluatorRunner.class file ...

User matching with current data

I have a database full of two different types of users (Mentors and Mentees), whereby I want the second group (Mentees) to be able to "search" for people in the first group (Mentors) who match their profile. Mentors and Mentees can both go in and change items in their profile at any point in time. Currently, I am using Apache Mahout for...

identify documents from results of mahout clustering

I am using mahout to cluster text documents indexed using solr. I have used the "text" field in the document to form vectors. Then I used the k-means driver in mahout for clustering and then the clusterdumper utility to dump the results. I am having difficulty in understanding the output results from the dumper. I could see the cluste...

Help with running Taste Grouplens demo on hadoop

Hi All, I am trying to build a collaborative filtering based Recommendation System as part of an academic project. I think Mahout project has a lot of potential and I want to use it. I installed, Mahout, hadoop and Java on my ubuntu 10.1. Hadoop and Java have been checked to be working fine together. (Ran the Hadoop word count example ...