7.4. Further reading

(Pereira & Warren, 1980) contains a detailed discussion of the DCG formalism. More Prolog programs for natural language processing can be found in (Gazdar & Mellish, 1989) and (Pereira & Shieber, 1987).

• G. Gazdar & C. Mellish (1989), Natural Language Processing in Prolog, Addison-Wesley.

• F.C.N. Pereira & D.H.D. Warren (1980), ‘Definite Clause Grammars for language analysis: a survey of the formalism and a comparison with Augmented Transition Networks’, Artificial Intelligence 13: 231-278.

• F.C.N. Pereira & S.M. Shieber (1987), Prolog and Natural-language Analysis, Center for the Study of Language and Information, Menlo Park, CA.