question about the clustering algorithm -- sql server data mining

praveen konda
10/10/2004 10:31:49 PM

hello everyone,
i tried this question in olap room but there was no reply.
i had a question regarding Expectation-Maximization
algorithm used by microsoft for data mining in ole db.
Does anyone know how good this algorithm is when compared
to the latest clustering algorithms like chameleon, cure,
rock. Does EM create clusters of hybrid shapes or else
just it forms only circular shaped clusters. If there is
any document that compares this algorithm then it would
be helpful for me a lot. i need this information
desperately. Can anyone of u please reply me about ur
knowledge about this.hope someone will reply me soon.my
email id is mailkonda@yahoo.com
thanks in advance,
praveen

Dejan Sarka
10/11/2004 8:19:56 AM

Here is a basic answer I wrote in the OLAP group:

You can check the MS Clustering algorithm in details at
http://research.microsoft.com/research/pubs/view.aspx?type=Publication&id=267.
For the comparisons - I don't know for direct comparisons; here is a link
to an article which compares groups of methods:
https://wwws.cs.umn.edu/tech_reports_upload/tr2002/02-014.pdf.

I guess this is not a complete answer, but it should give you a startig
point.

--
Dejan Sarka, SQL Server MVP
Associate Mentor
Solid Quality Learning
More than just Training
www.SolidQualityLearning.com

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sql server data mining : question about the clustering algorithm