DM: Parallel coordinate plots

[Warren Sarle]

Karen Moe 
> I recently attended a fascinating lecture/demo by Dr. Alfred 
>Inselberg, Tel
> Aviv Univ, at the Univ of Maryland Human Computer Interaction Lab 
>regarding
> "Multidimensional visualization with applications to process 
>control and
> other multivariate problems".  He graphically represents data in a 
>parallel
> coordinate system (vs orthogonal) and demonstrates how 
>interelationships
> become visible when manipulating the data.  I believe Dr. Inselberg 
>has a
> patent on a data mining approach and software tools exist.  His 
>email was
> given:  aiisreal@math.tau.ac.il

It's very nice for up to a hundred or so cases, if the variables have
a natural order. The software I have seen in the last few years is
deficient in automatically ordering and reflecting variables; see
Hartigan's ancient book on clustering for an algorithm.

-- 

Warren S. Sarle       SAS Institute Inc.   The opinions expressed here
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