Exploiting A Large Data Base By Longman

We wish to explore some of the aspects of the exp lo i t a t i on of two d i c t i o n a r y f i l e s by LONGHAN Ltd, one for ' c o r e ' [mglish and one for Imglish idioms. We'l l t r y to show the f e a s i b i l i t y o f an approach to language process ing based on a lexicon, conceived of as the r epos i to ry of grammatical, semantic and knowledge-of-theworld information. Af te r giving a b r i e f de sc r ip t i on of the computer :fi les (Section I) w e ' l l focus on the following points : a) a l ex ica l approach to granmar allows a considerable s i m p l i f i c a t i o n of the PSG component o f a pars ing system (Section I I , Part One)~ b) the s y n t a c t i c po t en t i a l of many lexemes (at surface s t ruc tu r e level) can serve as a guide to t h e i r deep s t ruc tu r e conf igura t ions (Section I I s P a r t Two)j c) provided tha t a d i c t i o n a r y makes use of a l imi ted def in ing vocabulary, the t ex t s of the d i c t i ona ry d e f i n i t i o n s can be processed on the bas is of co r r e l a t i ons between s y n t a c t i c s t ruc tu res ( f i l l e d with individual lexenms or lexemes belonging to spec i f i ab l e c lasses ) and semantic r e l a t i onsh ips such as tha t between a process verb and an instrument (Section I I I ) .