Abstract. We give a detailed account of an algorithm for efficient tactical generation from underspecified logical-form semantics, using a wide-coverage grammar and a corpus of real-world target utterances. Some earlier claims about chart realization are critically reviewed and corrected in the light of a series of practical experiments. As well as a set of algorithmic refinements, we present two novel techniques: the integration of subsumption-based local ambiguity factoring, and a procedure to selectively unpack the generation forest according to a probability distribution given by a conditional, discriminative model.
For HPSG, REF ) present a bottom-up, lexicalist, surface realiser which uses a chart based strategy, subsumption-based local ambiguity factoring and a procedure to selectively unpack the generation forest according to a probability distribution given by a conditional, discriminative model.
High Efficiency Realization for a Wide-Coverage Unification Grammar
Second International Joint Conference on Natural Language Processing: Full Papers
Computer Science