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https://issues.apache.org/jira/browse/MAHOUT-56?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deneche A. Hakim updated MAHOUT-56:
-----------------------------------
Attachment: watchmaker-tsp.patch
*Description of the changes*
I made the code problem independent, and so I changed the class names to remove
any reference to TSP.
The classes are :
. StringUtils: inspired from the future Stringifier of Hadoop. Translates any
given object (even not a Serializable one)
to a one-line xml representation, and vice versa.
. MahoutEvolutionEngine: generic distributed Genetic algorithms. Now the
constructor takes a FitnessEvaluator
that takes care of evaluating every candidate.
. MahoutEvaluator: evaluate a population of individuals using a given
FitnessEvaluator. Uses StringUtils to store
the population into an input file, and the FitnessEvaluator into the JobConf.
. EvalMapper: Mapper that evaluate a candidate using the FitnessEvaluator
passed into the JobConf.
Note that we no more need watchmaker-examples to build the code, but we still
need it in the tests to
compare this code with the reference implementation.
*Needed libraries*
you'll need the xstream library [http://xstream.codehaus.org/], I used the
1.2.1 version. Add the following jars to core/lib
xpp3_min-*.jar
xstream-*.jar
I also included the licenses for all the libraries that I added. And if we plan
to use xpp3_min-*.jar we need
to include the following lines somewhere in the Mahout documentation or in the
software:
"This product includes software developed by the Indiana University
Extreme! Lab (http://www.extreme.indiana.edu/)."
*Next steps*
There is another example with wathmaker that I want to test with this new code,
just to confirm that
the integration is fine. Then we can talk in the mailing list about the next
move, wich could be one of the following :
. meta-mutations
. for now Im assuming that each node contains the whole dataset needed to
evaluate a candidate. But if the dataset is large enough
to span on multiple nodes, the user should have the possibility of writing the
evaluation funtion in terms of mappers and reducers
. ...any suggestion ?
> Watchmaker Integration
> ----------------------
>
> Key: MAHOUT-56
> URL: https://issues.apache.org/jira/browse/MAHOUT-56
> Project: Mahout
> Issue Type: Task
> Reporter: Deneche A. Hakim
> Attachments: watchmaker-tsp.patch, watchmaker-tsp.patch
>
>
> The goal of this task is to allow watchmaker definded problems be solved in
> Mahout.
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