Álvaro Pérez Alarcón created MAHOUT-1344:
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Summary: Self-Organizing Map algorithm (batch version)
Key: MAHOUT-1344
URL: https://issues.apache.org/jira/browse/MAHOUT-1344
Project: Mahout
Issue Type: New Feature
Components: Clustering
Affects Versions: 0.8
Reporter: Álvaro Pérez Alarcón
Priority: Minor
Fix For: 0.8
Good morning.
As part of my final year project, I have implemented a new module for Apache
Mahout, implementing Kohonen's self-organizing map algorithm, in its batch
version.
The work is already done, and I will proceed to submit a patch ASAP. It was
developed over Mahout 0.8.
The patch includes unit tests and the algorithm was successfully used in a
Hadoop cluster to cluster two big datasets. Results can be seen in [this image
gallery|http://imgur.com/a/DlgRT].
The implementation uses the generic clustering algorithms implemented in the
ClusterIterator class. Minor changes were made to this and other related
classes to support some of the features, without affecting the execution of
other algorithms.
The algorithm supports convergence and the ability to resume a work at a given
iteration (mainly, in order to initialize KohonenBatchClusteringPolicy with a
given iteration number, althought it also affects the names of the output
directories).
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