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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