In this paper we present a lattice parser that uses a variant of a Unification Categoriai Grammar. We explain how this formalism, which offers interesting properties for natural language processing, can be implemented for speech lattices in an effective way without losing of its expressiveness and flexibility. In the solution we have adopted, the parsing process has been split in two phases: an acceptance phase based on bit string unification which includes score combination functions, followed by a full semantic interpretation phase. The parser operates on two linguistic knowledge bases built from the flight enquiries and reservations domains for English and French. Keywords: lattice parsing; constraining features; Unification Categoriai Grammar; bit encoding; score combination.
Bibliographic reference. Andry, Francois / Thornton, Simon (1991): "A parser for speech lattices using a UCG grammar", In EUROSPEECH-1991, 219-222.