The LexGram system implements a feature-based version of the Lambek
categorial grammars, which can be simultaneously considered as a
lexicalized version of Pollard and Sag's Head Driven Phrase Structure
Grammar (HPSG). LexGram has been developed in the mid-ninties as an
add-on to the typed, feature-based formalism
CUF.
central ideas of LexGram:
Esther König: "LexGram - a practical categorial grammar
formalism".
Journal of Language and Computation,
1(1):33-52 Oxford University Press and
FOLLI, 1999
(.ps.gz,
.pdf)
Esther König: "Introduction to categorial grammars",
lecture notes, IMS, May 1996
(.ps.gz,
26 pp.)
DYANA-2 prototype:
Claire Grover and Janet Hitzeman: The DYANA Integrated Implementation
User Manual. DYANA-2. ESPRIT Basic Research Project 6852. Deliverable
R3.7B. September 1995. Center for Cognitive Science.
University of Edinburgh.
semantic-transfer based machine translation:
Judith Eckle:
"Semantikbasierter Transfer und lexikalische Desambiguierung in der
Maschinellen Übersetzung". Studienarbeit Nr.1377, Fakultät
Informatik, Universität Stuttgart, 1994
(.ps.gz, 63pp., 165K)
Japanese grammar:
Yoshiko Fujinami: An implementation of Japanese Grammar
based on HPSG. Master's thesis. Department of Artificial
Intelligence. Edinburgh University. 1996.
(.ps.gz,
102pp.,180K)
theoretical background
Jochen Dörre: Parsing for Semidirectional Lambek Grammar is
NP-Complete. Proceedings ACL '96 (Santa Cruz).
(cmp-lg/9605016).
Jochen Dörre, Esther König, Dov M. Gabbay:
"Fibred Semantics for Feature-based Grammar Logic".
Journal of Logic, Language, and Information.
Special Issue on Language and Proof Theory.
5: 387-422, 1996.
Kluwer Academic Publishers.
(.ps.gz,
143K)