Conflict resolution strategies are used in
production systems in
artificial intelligence
Artificial intelligence (AI) is intelligence—perceiving, synthesizing, and inferring information—demonstrated by machine
A machine is a physical system using Power (physics), power to apply Force, forces and control Motion, moveme ...
, such as in rule-based
expert systems
In artificial intelligence, an expert system is a computer system emulating the decision-making ability of a human expert.
Expert systems are designed to solve complex problems by reasoning through bodies of knowledge, represented mainly as if� ...
, to help in choosing which
production rule to fire. The need for such a
strategy
Strategy (from Greek στρατηγία ''stratēgia'', "art of troop leader; office of general, command, generalship") is a general plan to achieve one or more long-term or overall goals under conditions of uncertainty. In the sense of the " a ...
arises when the conditions of two or more rules are satisfied by the currently known facts.
Categories
Conflict resolution strategies fall into several main categories. They each have advantages which form their rationales.
[
#Specificity - If all of the conditions of two or more rules are satisfied, choose the rule according to how specific its conditions are. It is possible to favor either the more general or the more specific case.][ The most specific may be identified roughly as the one having the greatest number of preconditions. This usefully catches exceptions and other special cases before firing the more general (default) rules.][
#Recency - When two or more rules could be chosen, favor the one that matches the most recently added facts, as these are most likely to describe the current situation.][
#Not previously used - If a rule's conditions are satisfied, but previously the same rule has been satisfied by the same facts, ignore the rule.][ This helps to prevent the system from entering infinite loops.][
#Order - Pick the first applicable rule in order of presentation.][ This is the strategy that ]Prolog
Prolog is a logic programming language associated with artificial intelligence and computational linguistics.
Prolog has its roots in first-order logic, a formal logic, and unlike many other programming languages, Prolog is intended primarily a ...
interpreters use by default,[
]
See also
* Cognitive modelling A cognitive model is an approximation of one or more cognitive processes in humans or other animals for the purposes of comprehension and prediction. There are many types of cognitive models, and they can range from box-and-arrow diagrams to a set o ...
* CLIPS
References
{{reflist
Logic programming
Rule engines