RE: Validation methodologies

Margaret Hanley <[email protected]>
Newsgroups gmane.comp.infodesign.facetedclassification
Message-ID <[email protected]>
All,
It worked in the same way that you would normally play 20
questions as kids.

The user tries to guess what the item is, by asking about
aspects or facets of the object.  The faciliator can only
answer yes or no. Once the user gets to 20 questions they
must guess what it is. If the user knows the answer before
the 20 questions are up they can guess.

It's not important that the user guesses correctly or
incorrectly, the most important information to extract are
the facets.

For the microscopy example, lots of people started asking
if it was animal, mineral or vegetable (they got into the
swing very quickly) and also wanted to know if it was
cellular or non-cellular. For web sites, the first question
was nearly always if it was a e-commerce site and what it
was about.

So for the microscopy example the some of the facets we
came up with were:
* Species
* Type of electron microscope
* The magnification of the microscope
* The biological process being demonstrated
* Part of the organism or cell being shown
* The method for taking the image

It is really fun to do. The only thing that struck us as we
were doing the facilitation that you really needed to know
your subject matter. My co-facilitator last studied biology
in secondary school and my science degree was over 10 years
ago. It made us realise how much we DIDN'T know. :)


Mags
 --- PeterV <[email protected]> wrote: > 
> >  I have previously used "20 questions" as a way to
> generate 
> >  facets from a domain. In particular to understand what
> 
> >  elements of a picture (in the case of microscopy
> images) or 
> >  web sites (in the case of a web directory) are the
> users 
> >  interested in seeing, searching or browsing by to find
> that object.
> 
> Hi Mags,
> How does that method work? I would love to hear
> details...
> Peter
> 
> 
> 
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