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September 2006

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Subject:
From:
"Kejun (Kevin) Mei" <[log in to unmask]>
Reply To:
Classification, clustering, and phylogeny estimation
Date:
Sat, 16 Sep 2006 19:50:02 -0500
Content-Type:
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I just looked the CLUSTAN site and really like the software.
My only concern is whether I can get a license. I think It is not
so popular that our unversity should have it available for
students like me to use. But, I will consider it as my last
option if I have to buy it by myself. Thank you very much.

-Kevin

----- Original Message -----
From: "leo horseman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, September 16, 2006 1:06 PM
Subject: Re: clustering with distance matrix as input


> Ward's method as initially implemented by Ward generally does not produce
> the best hierarchical solutions.  Unless your data are of a naturally
> hierarchical nature, I would suggest looked at some other method.  You may
> wish to check the website for "CLUSTAN" package of programs; also obtain
an
> old CLUSTAN manual which would explain in some detail the operation of
many
> distance measures as well as a good variety of clustering methods.
>
> Leo Horseman
>
> >From: "Kejun (Kevin) Mei" <[log in to unmask]>
> >Reply-To: "Classification, clustering, and phylogeny estimation"
> >   <[log in to unmask]>
> >To: [log in to unmask]
> >Subject: clustering with distance matrix as input
> >Date: Fri, 15 Sep 2006 15:17:57 -0500
> >
> >Can someone please tell me a clustering method that use
> >a distance matrix as input? I tried implementing the Ward
> >method, but found the final clusters are not so good in my
> >application, when I trace how clusters are grouped and
> >how cluster centers are updated. I am seeking an improved
> >version of the Ward method, or any others.
> >
> >Thank you so much and have a great weekend.
> >
> >-Kevin
> >
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