Computer Science – Computation and Language
Scientific paper
1996-05-29
R. Mitkov and N. Nicolov (eds.) "Recent Advances in Natural Language Processing", vol. 136 of "Current Issues in Linguistic Th
Computer Science
Computation and Language
22 pages, uuencoded, gzipped PostScript
Scientific paper
A method is given that "inverts" a logic grammar and displays it from the point of view of the logical form, rather than from that of the word string. LR-compiling techniques are used to allow a recursive-descent generation algorithm to perform "functor merging" much in the same way as an LR parser performs prefix merging. This is an improvement on the semantic-head-driven generator that results in a much smaller search space. The amount of semantic lookahead can be varied, and appropriate tradeoff points between table size and resulting nondeterminism can be found automatically. This can be done by removing all spurious nondeterminism for input sufficiently close to the examples of a training corpus, and large portions of it for other input, while preserving completeness.
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