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Jonathan.Robie@S... writes:
<snip/>
> The problem with semantic networks in the 1970s was not that it is hard to
> reason about databases of assertions.
With respect, that was _precisely_ the problem. It was easy (still
is, c.f. CYC) to build up a large and apparently 'meaningful' net.
Getting serious work done with an inference engine working from that
net proved to be the problem. See Bill Woods's masterly analysis
_What's in a Link', and Brian Smith's _The Owl and the Electric
Encyclopaedia', which ought to be required reading for anyone
contemplating real work with metadata.
ht
[1] What's in a link: foundations for semantic networks
Author(s): William A. Woods
Book : Representation and Understanding
Subtitle : Studies in Cognitive Science
Editor(s): Daniel G. Bobrow, Allen M. Collins
Note : Reprinted in R. J. Brachman and H. J. Levesque, eds, {\it
Readings in Knowledge Representation}, pp.~217--241. Los Altos, Ca.:
Morgan Kaufmann, 1985
[2] The Owl and the Electric Encyclopaedia
Author(s): Brian C. Smith
Journal : Artificial Intelligence
Volume : 47
Pages : 251-288
Year : 1991
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
W3C Fellow 1999--2001, part-time member of W3C Team
2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: ht@c...
URL: http://www.ltg.ed.ac.uk/~ht/
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