Stefan Lischke wrote:
Murray Altheim wrote:
me worte:....................If u have problems with the "zoom" just
imagine two peoples who are talking about a topic and they do not
know if they are talking about the same, so person A asks person B
"what do u mean exactly, can u describe "Buys" in more detail for me,
so i can see if i have a topic which "means" the same but maybe has
not the same basename or SI than yours"
Is there any known technique of different abstraction layers for
TopicMaps?
Or any protocol for doing knowledge exchange in the way i described
in words?
You're essentially describing a structure similar to a knowledge
base, built upon an ontology. This is the kind of thing that most
knowledge representation systems are designed to handle and is
not a feature specific to Topic Maps. I happen to be implementing a
system similar to this using Topic Maps, but it could be done in
Protege, Cyc, OCML, OWL, any frame-based system, etc. Each concept
and relation is defined as a specialization of successively more
general concepts and predicates in a rooted tree. In Cyc, this
root is called "#$Thing". Everything inherits from #$Thing.
Oh thats cool whats the name of your project? is it ceryle?
Yes.
How do u separated your different layers of abstraction? You splitted it
in different TopicMap, for example each specialization of a concept in
an own TM, or do u have one big knowledgebase and an association type
like "specialize".
I have a modular system, whereby the processor can open a specific module
(say, the Place or Character module), or open a "driver" document that
calls all the modules in succession. There is inheritance of both concepts
and relations. Relations are a descendant of the root concept,
--- Thing --------
/ | \
/ | \
Concept SpatialThing TemporalThing
| \ /
| \ /
Relation Object
etc.
There is another question: How can u say with TopicMaps, that a TopicMap
subgraph is specializing a single topic? should i use the single topic
as scope for all topics and associations in the subgraph?
This is a feature of merging, in that when you bring an external
XTM document in via the <mergeMap> element, you can add a scope
to all incoming topics to keep them distinguished from those in
the original document. The concept of "subgraph" doesn't really
exist in Topic Maps, but you can support the idea via software.
Murray
......................................................................
Murray Altheim http://kmi.open.ac.uk/people/murray/
Knowledge Media Institute
The Open University, Milton Keynes, Bucks, MK7 6AA, UK .
"I'm a war president. I make decisions here in the Oval Office
in foreign policy matters with war on my mind." -- George W. Bush
http://news.bbc.co.uk/1/hi/world/americas/3470139.stm
"This is the new Mein Kampf. Only Hitler did not have nuclear
weapons. It's the scariest document I've ever read in my life."
-- Dr. Helen Caldicott, referring to the Project for the
New American Century report entitled "Rebuilding America's
Defenses: Strategy, Forces and Resources For a New Century"
http://home.earthlink.net/~platter/neo-conservatism/pnac.html
"This report proceeds from the belief that America should seek
to preserve and extend its position of global leadership by
maintaining the preeminence of U.S. military forces." [op. cit.]
"[...] and advanced forms of biological warfare that can target
specific genotypes may transform biological warfare from the
realm of terror to a politically useful tool." [op. cit.]
"This is a blueprint for US world domination."
http://www.guardian.co.uk/comment/story/0,3604,1036571,00.html
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