Recent Developments in the NL-Soar Garden Path Theory
CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE
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This report describes a theory of garden path phenomena that is emerging from work on NL-Soar, a computational model of language comprehension embedded within the Soar architecture. The theory is constrained by a corpus of two kinds of sentences garden paths GP, which reveal the limitations of human comprehension in dealing with local ambiguities, and non-garden-paths NGP, which reveal its power in handling local ambiguities. NL-Soar in a single-path comprehender with a limited capacity to repair misanalyzed input. A space of repair mechanisms is explored by hand simulation on the corpus. The importance of phonology and plausible search control is established, leading to a theory up to 95 accurate 76 worst case in predicting performance on 37 distinct GP and NGP types.
- Operations Research