Message-ID: <49E87F22.5000109@ua.ac.be>
Date: 2009-04-17T13:07:46Z
From: Dieter Vanderelst
Subject: Kruskal's MDS results
In-Reply-To: <loom.20090417T121605-200@post.gmane.org>
Thank you for clearing this out.
Jari Oksanen wrote:
> Dieter Vanderelst <Dieter.Vanderelst <at> ua.ac.be> writes:
>
>
>> The point is that the manual for the isoMDS function says it's stress output
> is in "percent". Does this mean,
>> the stress reported by isoMDS is just the stress value in MASS (which ranges
> from 0 to 1) value multiplied by
>> 100? I've haven't been able to find any resource that expresses stress in
> values from 0 to 100. So, this
>> would be a convention introduced by the authors of the package?
>>
> A comment about novelty of using percentages. I also had a look at some NMDS
> resources, and the first I found were two Kruskal's papers that happened to be
> on my desk (Psychometrika 29, 1-27 and Psychometrika 29, 115-129, both from
> 1964). Both of these expressed stress in percents. Certainly this is not a
> convention introduced by the authors of the package, since they are much too
> young to have done that prior to 1964.
>
> Cheers, Jari Oksanen
>
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