Re: Facet algebra

Dear Aida, 

   My area is Computer Science and thus I am not very familiar with 
the terminology used in library and information science. However I 
would really like to know how people from your area view the Compound 
Terms Composition Algebra.  I think that it would be much better if 
you could accompany your question with some short examples (just for  
avoiding misunderstandings). 

What I can tell you from now is that the algebra indeed allows 
expressing restrictions on synthesis. Concerning your question about 
data encoding and classification exchange between different 
applications, I have just defined XFML+ (an extension of XFML) which 
allows representing and exchanging algebraic expressions as well. 
Some information can be found in: 
http://www.csi.forth.gr/~tzitzik/XFMLplus/

In addition, I would like to inform you that my Web page now contains 
2 articles about the Compound Terms Composition Algebra:
(a) the one presented in EJC'2003 which gives all that one might want 
for understanding the algebra,  and
(b) the one to be presented in ODBASE'2003 which describes the formal 
semantics and explains why we cannot use the standard logic-based 
formalisms (like Description Logics) for obtaining what we can  with 
the Compound Terms Composition Algebra.

Regards,

Yannis

--- In [email protected], "Aida Slavic" 
<aida@a...> wrote:
> Yannis,
> 
> I need a bit of help in understanding the scope of 'compound terms
> composition algebra'.
> 
> In managing facetted classification schemes there are three kind of 
rules
> that needs to be encoded
> properly (apropriate data binding).
> 
> -facet citation order rule (the order of facets in compound term to 
achieve
> horizontal order with
> decending concretness)
> -filing order rules (the order compounds terms when they are filed 
to
> achieve the hierarchy in
> knowledge display: general to specific)
> -restriction on synthesis and rules on combination between facets
> (the areas of application of certain facets)
> 
> (NB I am not talking here about encoding semantic relationships 
that are
> dealt with on the level of facet
> itself)
> 
> While the first two rules are traditionally solved with 
appropriate 'facet
> indicators' in classification notation,
> followed by appropriate data coding of this notation, the last one 
needs a
> special attention.
> This is something that is usually  'handed over' to the application 
or tool
> itself
> (program memory) and I have never seen it coded on the level of
> classification data.
> 
> Am I right to think that 'compound terms composition algebra' takes 
care
> about all of these rules?
> Does it provide solutions for data encoding as well (e.g. for the 
the
> purpose of classification
> exchange and sharing between different applications).
> 
> 
> Aida
> 



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