Rule Interchange Format
Abbreviated as RIF, the Rule Interchange Format is a W3C recommended effort to develop a format for interchange of rules in rule-based systems on the Semantic Web. The overall RIF design takes the form of a layered architecture organized around the notion of a dialect. RIF has a number of extensions to support features such as objects and frames, URIs as identifiers for concepts, and XML schema data types. While this makes RIF a Web language, RIF is designed to enable interoperability among rule languages in general, and is not limited to the Web.