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CHI-WEB  January 2005, Week 4

CHI-WEB January 2005, Week 4

Subject:

Classification & Mind: summary

From:

Luca Rosati <[log in to unmask]>

Reply-To:

Luca Rosati <[log in to unmask]>

Date:

Mon, 24 Jan 2005 14:06:05 +0100

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (134 lines)

About the theme “Classification and Mind” I asked for in some lists, here is a
short summary of the answeres I received.
My interest for that theme starts from these words:

hierarchies are not natural concepts for most people when it comes to storing
and retrieving arbitrary information. […]
In the current desktop metaphor used by most window systems, you can nest folder
within folder ad infinitum. It's no wonder most computer neophytes get confused
when confronted with this paradigm. […]
Computer science gives us hierarchical structures as tools to solve the very
real problems of managing massive quantities of data. But when this
implementation model is reflected in the manifest model presented to users,
they get confused because it conflicts with their mental model of storage
systems. […]
In other words, rather than forcing users to navigate deep, complex tree
structures, give them tools to bring appropriate information to them
(A. Cooper, R. Reimann, "About Face 2.0 - The Essentials of Interaction Design",
Wiley, 2003, p. 156), quoted by Campanini, Castagna, Tazzoli, "Platypus Wiki: a
Semantic Wiki Wiki Web"
http://semanticweb.deit.univpm.it/swap2004/cameraready/castagna.pdf.


I already knew:

* Lakoff/Johnson, Metaphors we live by
* Raskin, The Human Interface (in partic. chapter 5)

+ + + + +

mirko corli <[log in to unmask]>, suggested me

Reason, James (1990), Human Error, Cambridge University Press, Cambridge, MA,
trad. it. L'errore umano, Il Mulino, Bologna, 1994

+ + + + +

Patrick Debois - [log in to unmask]:

-Sorting things out (Bowker and Star)
-Women,Fire and Dangerous things  (George Lakoff)

+ + + + +

Jeff Johoson [log in to unmask]:

The novelist and essayist Jorge Luis Borges wrote of an ancient
Chinese encyclopedia containing a system for classifying animals
(Borges, 1966).  The encyclopedia, probably fictional, was supposedly
entitled Celestial Emporium of Benevolent Knowledge.  According to
Borges, it divided all animals into the following categories:

- belong to the Emperor
- embalmed
- trained
- suckling pigs
- mermaids
- fabulous
- stray dogs
- included in this classification
- tremble as if they were mad
- innumerable
- drawn with a very fine camel's hair brush
- others
- have just broken a flower vase
- from a great distance, resemble flies

It is not a classification scheme that we today would consider very
logical.  The categories are arbitrary, overlapping, non-exhaustive,
and subjective - skewed by the perceptions of the scheme's supposed
author.  It is these characteristics that make the scheme seem
humorous to us.


Borges, J.L., "The Analytical Language of John Wilkins,"  Selected
Non-Fiction, ed. Eliot Weinberger.  New York: Penguin Putnam, 1999.

+ + + + +

Marti Hearst <[log in to unmask]>:

I've written extensively on faceted categorization for search/browsing
interfaces.  See papers and demos at flamenco.berkeley.edu

+ + + + +

Dick Penn <[log in to unmask]>:

 A couple of observations, no research I'm afraid...

One is a very bad example of an imposed hierarchy, which might be familiar to a
lot of people. The accounting software I use imposes a heirarchical
classification of expenses. One major category is 'insurance' which breaks down
into 'life', 'health' and so on. Another is 'auto' which contains a sub-category
'insurance'! Obviously the user need here is to classify a single expense into
more than one category - insurance and auto, or insurance and health. I suspect
the initial classification was derived from established accounting practices
rather than computer people, but it is a particularly confusing one.

The other is that the real-world classification of things is often
multi-dimensional. The fabulously complex heirarchical system used by
librarians (the Dewey Decimal System) is one, in which an overlying heirachy is
linearised into a sequence, with the main goal of getting similar books
together. There is also a physical classification of the library into floors,
rooms, aisles, racks and shelves. The phyisical and logical classification meet
at the lowest level (the books are ordered by the Dewey number) and at the
highest level (the library has a fiction section) but in between the two
systems are actually in conflict. The next book in the Dewey sequence might be
at the other end of the room, if it happens not to fit on a shelf next to the
one I am looking at. This is a pattern which turns up in many places, such as
ontology, in supermarkets, and in electronics, where the physical placement of
equipment may conflict or parallel with its functional arrangment. Almost
invariably, there is a conflict between the user (who needs to see things in
different ways depending on their goal) and the classification specialist (who
needs a single sure way to find everything.

I applaud the effort to move beyond the heirarchy, but when Bill Gates and his
crew talk about replacing the nested folder view with a massive database and
search capability, I wonder if we are throwing out the baby with the bathwater.
How will the billions of existing users who have adapted their behaviour and
thinking to the existing approach react to a new way?

+ + + + +

Thanks to all!
Luca

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