Top Down Clustering
-------------------
Key: MAHOUT-843
URL: https://issues.apache.org/jira/browse/MAHOUT-843
Project: Mahout
Issue Type: New Feature
Components: Clustering
Affects Versions: 0.6
Reporter: Paritosh Ranjan
Fix For: 0.6
Top Down Clustering works in multiple steps. The first step is to find
comparative bigger clusters. The second step is to cluster the bigger chunks
into meaningful clusters. This can performance while clustering big amount of
data. And, it also removes the dependency of providing input clusters/numbers
to the clustering algorithm.
The "big" is a relative term, as well as the smaller "meaningful" terms. So,
the control of this "bigger" and "smaller/meaningful" clusters will be
controlled by the user.
Which clustering algorithm to be used in the top level and which to use in the
bottom level can also be selected by the user. Initially, it can be done for
only one/few clustering algorithms, and later, option can be provided to use
all the algorithms ( which suits the case ).
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