(Official Production System, Version 5) язык OPS5 язык ИИ как альтернатива Лиспу, Прологу и Смолтоку. Язык программирования для продукционных систем. Разработка Университета Карнеги - Меллона Смотри также: AI, Lisp, Prolog
A programming language for rule-based production systems. A rule consists of pre-condition(s) and a resulting action. The system checks its working memory to see if there are rules whose pre-conditions are satisfied, if so, the action in one selected satisfied rule is executed. There is a public domain implementation of an OPS5 interpreter written by Charles L. Forgy in 1977. It was first implemented in Lisp and later in BLISS. It was also ported to Common Lisp by George Wood and Jim Kowalski. CLIPS is a language for writing expert systems, with some of the capabilities of OPS5. See also C5, OPS83, OPS4, OPS5+, OPS83.