[Corpora-List] Sorry, my mistake, I need a Context-DEPENDENT grammar simulator

[stefano federici]

I guess that I stated my correct request in the wrong way. I just need a general simulator for context-dependent grammars that I can use to show to my students (by creating a toy grammar) how a language analyzer for a context-dependent grammar does works. I don't need any real context-dependent grammar for whatever language. 

I hope that this will give me some positive answer.

Thanks for your time
Stefano

 
Stefano Federici
-------------------------------------------------
Università degli Studi di Cagliari
Facoltà di Scienze della Formazione
Dipartimento di Scienze Pedagogiche e Filosofiche
Via Is Mirrionis 1, 09123 Cagliari, Italia
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Tel: +39 349 818 1955 Fax: +39 070 937 1870



----- Messaggio originale -----
Da: John F. Sowa <sowa at bestweb.net>
A: stefano federici <s_federici at yahoo.com>
Cc: corpora at uib.no
Inviato: Giovedì 10 aprile 2008, 13:14:23
Oggetto: Re: [Corpora-List] Sorry, my mistake, I need a Context-DEPENDENT grammar simulator

Stefano,

You are asking for somebody to hand you the Holy Grail:

> What I need is a context-DEPENDENT grammar simulator.

Chomsky's original definition of context sensitive grammar
rules was very general, but not very practical for dealing
with the kinds of context dependencies in natural languages
(or even the much, much simpler programming languages).

The number of different kinds of context dependencies in NLs
is enormous, and many different branches of linguistics (both
theoretical and computational) have evolved to deal with
various aspects in an open-ended variety of complex ways.

At one extreme, any background knowledge that people have in
their heads (or computers have in their knowledge bases) may
be necessary for disambiguating a sentence in context.

At the other extreme, a table of names, references, symbols, etc.,
is a highly efficient mechanism for keeping track of anaphoric
references in NLs and symbol declarations in programming languages.

A complete list of all the kinds of context dependencies and how to
describe, formalize, and implement them would touch on essentially
every aspect of linguistics, logic, and knowledge representation.

In between, there are interconnections of the many different
levels, such as semantic variations that may cause a puff of
white noise to be interpreted as different phonemes, depending
on what the listener was expecting.

I think that everybody who subscribes to this list would like
to see a simulator of all that.  If anyone has such, please
let us know.

John Sowa
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