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From "Deneche A. Hakim (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (MAHOUT-145) PartialData mapreduce Random Forests
Date Sun, 06 Sep 2009 09:53:57 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12751842#action_12751842
] 

Deneche A. Hakim edited comment on MAHOUT-145 at 9/6/09 2:52 AM:
-----------------------------------------------------------------

bq.    *  TODO: test the code on a Hadoop 0.20.0 cluster (EC2)

Looks like I'll have to wait till Hadoop 0.20.1 to be able to test on EC2...after creating
my own AMI (with a lot of pain, being a noob), I stumbled upon the following bug [HADOOP-5921|http://issues.apache.org/jira/browse/HADOOP-5921]



      was (Author: adeneche):
    bq.    *  TODO: test the code on a Hadoop 0.20.0 cluster (EC2)

Looks like I'll have to wait till Hadoop 0.20.1 to be able to test on EC2...after creating
my own API (with a lot of pain, being a noob), I stumbled upon the following bug [HADOOP-5921|http://issues.apache.org/jira/browse/HADOOP-5921]


  
> PartialData mapreduce Random Forests
> ------------------------------------
>
>                 Key: MAHOUT-145
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-145
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Classification
>            Reporter: Deneche A. Hakim
>            Priority: Minor
>         Attachments: partial_August_10.patch, partial_August_13.patch, partial_August_15.patch,
partial_August_17.patch, partial_August_19.patch, partial_August_2.patch, partial_August_24.patch,
partial_August_27.patch, partial_August_31.patch, partial_August_9.patch
>
>
> This implementation is based on a suggestion by Ted:
> "modify the original algorithm to build multiple trees for different portions of the
data. That loses some of the solidity of the original method, but could actually do better
if the splits exposed non-stationary behavior."

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