[Corpora-List] Context-free grammar simulator

[Eric Atwell]

Stefano,

Try the open-source Natural Language ToolKit http://nltk.sf.net

Screenshots of context-free grammar and parsers:
http://nltk.org/index.php/Screenshots

To run the graphical simulations whcih produced these screenshots, 
download and install NLTK, see 
http://nltk.org/index.php/Getting_Started

then follow the instructions to run the demos, see

http://nltk.org/index.php/Getting_Started#Running_NLTK.27s_Graphical_Demonstrations


This *should* work, but the graphics use python linked to a C API 
so if it doesnt work it may be because you have the wrong version of
python/C ... I agree that ideally a web-browser applet would be 
ideal for demos as totally platform-independent.


good luck!

Eric Atwell, Leeds University



On Thu, 10 Apr 2008, stefano federici wrote:

> Dear collegues,
I would like to be able to show to my students how a context-free grammar does work. I don't need an optimized parser for context-free grammars, but I guess an applet with graphics or similar simulator (best if opensource) would do the trick.

Thanks for your help

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
-------------------------------------------------
Tel: +39 349 818 1955 Fax: +39 070 937 1870

-- 
Eric Atwell,
  Senior Lecturer, Language research group leader, School of Computing,
  Faculty of Engineering, UNIVERSITY OF LEEDS, Leeds LS2 9JT, England
  TEL: 0113-3435430  FAX: 0113-3435468  WWW/email: google Eric Atwell
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