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QType

Description:
QType is a grammar engineering system based on typed feature structures and unification. It includes type constraints, relational constraints, lexical rules with default unification, and non-monotonic inheritance in the type signature. QType is still under development.

Download: Source (SICStus Prolog 3.x), example grammars, and documentation: QType.zip 360K.


QDATR

Description:
QDATR is an implementation of DATR, a formalism for the description of non-monotonic inheritance networks. It is designed to model natural language lexicons. For information and downloads go to the

QDATR Homepage: Click here



QPATR

Description:
QPATR is an implementation of the PATR-II formalism with some logical extensions. It is designed to work with inclomplete lexicons and to dynamically extend existing lexicons. QPATR has a DATR interface and allows the integration of non-monotonic inheritance hierarchies with unification of feature structures.

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