mahout Questions
4
I have installed mahout and I have imported the existing maven project apache-mahout-distribution-0.12.2 to Eclipse IDE for Java Developers and can not build and I couldn't fix these problems. Plea...
5
After searching for an option to run Java code from Django application(python), I found out that Py4J is the best option for me. I tried Jython, JPype and Python subprocess and each of them have ce...
3
Solved
It is described in Mahout in Action that normalization can slightly improve the accuracy.
Can anyone explain the reason, thanks!
Gere asked 3/4, 2013 at 1:8
2
In Mahout, there is support for item based recommendation using API method:
ItemBasedRecommender.mostSimilarItems(int productid, int maxResults, Rescorer rescorer)
But in Spark Mllib, it appears...
Gisarme asked 17/12, 2014 at 18:20
2
Recently I start learning Hadoop and Mahout. I want to know the path to directory within Hadoop filesystem directory.
In hadoop-1.2.1/conf/core-site.xml, I have specified:
<property>
<n...
Privett asked 12/11, 2013 at 19:52
4
Solved
I am using Spark to build a recommendation system prototype. After going through some tutorials, I have been able to train a MatrixFactorizationModel from my data.
However, the model trained by Sp...
Historiated asked 7/1, 2015 at 8:23
4
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I'm currently investigating the options to extract person names, locations, tech words and categories from text (a lot articles from the web) which will then feeded into a Lucene/ElasticSearch inde...
Brooklet asked 17/9, 2011 at 13:42
1
I'm trying to cluster and classify users with Mahout. At the moment I am at the planning phase, my mind is completely mixed with ideas, and since I'm relatively new to the area I'm stuck at the dat...
Knoxville asked 29/6, 2015 at 23:11
3
I was playing with Mahout and found that the FileDataModel accepts data in the format
userId,itemId,pref(long,long,Double).
I have some data which is of the format
String,long,double
What ...
2
I have created my Vectors as described in this question and have run mahout kmeans on the data.
Since I'm using Mahout 0.7, the clusterdump command didn't work as described in Mahout in Action, bu...
Greyson asked 23/1, 2013 at 9:51
4
Solved
I'd like to write a "smart monitor" in Java that sends out an alert any time it detects oncoming performance issues. My Java app is writing data in a structured format to a log file:
<...
Bigener asked 25/3, 2013 at 21:43
2
Solved
I get this error mvn -e package in Ubuntu 12.04:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile (default-compile) on project HadoopSkeleton: Compilatio...
3
I've been reading about using Solr and Mahout for developing Recommendation Systems.
As I understood they handles two different problems.
Since Solr is a search engine+classification syste...
Cataclysmic asked 28/11, 2012 at 1:26
5
Solved
Java based Mahout's goal is to build scalable machine learning libraries. Are there any equivalent libraries in Python ?
Sot asked 27/1, 2011 at 17:3
1
For clustering, Mahout input needs to be in vector form. There are two types of vector implementations. One is Sparse Vector and another is Dense Vector.
What is difference between two ?
Usage sc...
Economizer asked 28/7, 2013 at 16:23
6
I was wondering if there is any open source recommendation engine available? It should suggest something like Amazon and Netflix. I have heard of a framework called Apache Mahout - Taste. I a...
Agronomy asked 20/11, 2009 at 5:42
4
Solved
I need to do some heavy machine learning computations. I have a small number of machines idle on a LAN. How many machines would I need in order for distrubuting my computations using hadoop / mapre...
Attenweiler asked 13/7, 2011 at 16:40
3
Solved
I have hadoop cluster version 2.2.0 running with mahout 0.8, is it compatible? Because whenever I run this command:
bin/mahout recommenditembased --input mydata.dat --usersFile user.dat --numRecom...
2
I want to calculate the TF (Term Frequency) and the IDF (Inverse Document Frequency) of documents that are stored in HBase.
I also want to save the calculated TF in a HBase table, also save the ca...
3
The latest release mahout 0.9 is only built on hadoop 1.x. (mvn clean install)
How can I compile mahout for hadoop 2.0.x?
Because When I was running the commands:
hadoop jar mahout-examples-0....
Ballinger asked 12/9, 2013 at 15:2
2
Solved
I have the following problem and was thinking I could use machine learning but I'm not completely certain it will work for my use case.
I have a data set of around a hundred million records contai...
Baseline asked 5/5, 2013 at 3:36
4
I'm learning Mahout and reading "Mahout in Action".
When I tried to run the sample code in chapter7 SimpleKMeansClustering.java, an exception popped up:
Exception in thread "main" java.io.IOExce...
3
Solved
I'm starting to learn some stuff about big data with a big focus on predictive analysis and for that I have a case study I would like to implement:
I have a dataset of servers health information t...
Disposure asked 6/12, 2012 at 16:7
1
How to perform image classification from mahout? How to convert the image to a form which is accepted by mahout classification algorithms? Is the any starter code to start with? Please share me som...
Mcgowan asked 15/10, 2013 at 18:31
4
Solved
I would like to run this code which I found in Mahout In Action:
package org.help;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.conf.Co...
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