{"type":"ScholarlyArticle","title":"Representation and Efficiency in a Production System for Speech Understanding","authors":[{"name":"Donald L. McCracken","slug":"donald-l-mccracken","given":"Donald L.","family":"McCracken","affiliation":""}],"abstract":"he rc!>earch quc~.tion !.ludir.cl i!> whether it is prilclical to usc a production system (PS) architecture for a ver!>ion of the He;.~r~.;~y-11 (11511) !q\">~:>ech understandi ng r.ystcm. The study focuses on adequacy of representation, space efficiency and time efficicnc.y . 1\\ running PS architecture called HSP was der.igned and implemented and twelve HSII knowledge !.ourcc~ were tran!>latcd to HSP productions, with two of the twelve actually run under HSP. Detailed compari~. ons of HSII ;mel HSP produced the following results: (1) HSP is adequate to represent the HSII speech knowleclae, even thn11ch HSP ir. a comparatively simple PS architecture; (2) HSP suffers a moderate space penalty for repre~.entinp, deciMativr ~ HSII knowledge, which is serious since HSII contains a high proportion of such knowledge; (3) rcpre:;cnti1tion of 11511 dcclariltivc knowlcdp,c as HSP productions causes problems with multiple use of that knowledge; (4) lilck of a local working memory in the HSP architecture has serious consequences both for space and time t-fficiPncy; and (5) HSP ha s a time efficiency handicap of two to three-and-a-half ordElrs of magnitude, in spite of efficiency mechanisms which make HSP comparable in time efficiency to other PSs. The paper ends with a set of que~t ion !> that remain to be answered for a thorough evaluation of a PS version of HSII.","doi":null,"url":"https://ijcai.org/proceedings/1979/123","pdf":"https://ijcai.org/proceedings/1979/0123.pdf","markdown":"https://ijcai.org/proceedings/1979/123.md","bibtex":"https://ijcai.org/proceedings/1979/bibtex/123","volume":{"slug":"1979","title":"Proceedings of the Sixth International Joint Conference on Artificial Intelligence","short_title":"IJCAI 1979","url":"https://ijcai.org/proceedings/1979/","year":1979,"location":"Tokyo, Japan","dates":"August 20-23, 1979","editors":"Bruce G. Buchanan","isbn":"","publisher":"International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":null,"track":"","number":123,"pages":{"first":null,"last":null},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}