Prolog

One of my Esperantist friends was from Modena in Italy. Davide was his name, and his job entailed Artificial Intelligence using the Prolog programming language.

Prolog has been used for many purposes, but its inventor, Alain Colmerauer, was interested in computational linguistics, and this remains a classic application for the language. Moreover, Prolog offers a number of tools which make life easier for computational linguists, and we are now going to start learning about one of the most useful of these: definite clause grammars, or DCGs as they are usually called.