knowledge based systems - définition. Qu'est-ce que knowledge based systems
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Qu'est-ce (qui) est knowledge based systems - définition

COMPUTER PROGRAM THAT REASONS AND USES A KNOWLEDGE BASE TO SOLVE COMPLEX PROBLEMS
Knowledge based system; Knowledge system; IKBS; Knowledge systems; Knowledge-based system; Knowledge-based Systems; Knowledge-based programming; Knowledge-based artificial intelligence; Knowledge-Based Systems

knowledge-based system         
<artificial intelligence> (KBS) A program for extending and/or querying a knowledge base. The related term expert system is normally used to refer to a highly domain-specific type of KBS used for a specialised purpose such as medical diagnosis. The Cyc project is an example of a large KBS. (1999-09-07)
Knowledge-based systems         
A knowledge-based system (KBS) is a computer program that reasons and uses a knowledge base to solve complex problems. The term is broad and refers to many different kinds of systems.
Knowledge-based recommender system         
Knowledge based recommender
Knowledge-based recommender systems (knowledge based recommenders) are a specific type of recommender system that are based on explicit knowledge about the item assortment, user preferences, and recommendation criteria (i.e.

Wikipédia

Knowledge-based systems

A knowledge-based system (KBS) is a computer program that reasons and uses a knowledge base to solve complex problems. The term is broad and refers to many different kinds of systems. The one common theme that unites all knowledge based systems is an attempt to represent knowledge explicitly and a reasoning system that allows it to derive new knowledge. Thus, a knowledge-based system has two distinguishing features: a knowledge base and an inference engine.

The first part, the knowledge base, represents facts about the world, often in some form of subsumption ontology (rather than implicitly embedded in procedural code, in the way a conventional computer program does). Other common approaches in addition to a subsumption ontology include frames, conceptual graphs, and logical assertions.

The second part, the inference engine, allows new knowledge to be inferred. Most commonly, it can take the form of IF-THEN rules coupled with forward chaining or backward chaining approaches. Other approaches include the use of automated theorem provers, logic programming, blackboard systems, and term rewriting systems such as CHR (Constraint Handling Rules). These more formal approaches are covered in detail in the Wikipedia article on knowledge representation and reasoning.