NEWCONNECTIVE

• Syntactic build. Which construction represent the components to have indicating the fresh certified demonstration syntax out-of RIF reason languages by the focusing the fresh demonstration syntax of your wildbuddies buluÅŸma own structure. The new speech syntax is used when you look at the RIF so you’re able to describe the fresh semantics of your own languages in order to show area of the info with instances. So it sentence structure is not supposed to be a tangible sentence structure to own the newest languages; it will leave out info like the delimiters of the various syntactic portion, parenthesizing, precedence out of workers, and stuff like that. Because RIF was an interchange style, it uses XML as its just tangible syntax.
• Semantic design. The newest semantic construction means the latest elements which might be employed for indicating this new type RIF logic dialects.
• XML serialization design. This build talks of the entire prices you to reason languages should be use in specifying their real XML-depending syntaxes. For each and every dialect, its tangible XML sentence structure is actually a derivative of your own dialect’s speech syntax. It could be named a serialization of these sentence structure.

NEWCONNECTIVE

• Constants and you can parameters. These types of terms are to most reason languages.
• Positional terms. These types of terminology are commonly used in earliest-buy reasoning. RIF-FLD defines positional terms in the a somewhat alot more standard way from inside the purchase to enable languages having highest-buy syntax, eg HiLog [CKW93] and you will Relfun [RF99].
• Terminology having entitled objections. Speaking of such as positional terminology aside from for each dispute off a name is known as and also the acquisition of one’s objections is actually immaterial. Words that have titled objections generalize the notion of rows into the relational tables, where column titles correspond to conflict labels.
• Lists. This type of words match listings for the reasoning coding, and they are used in the essential Reason Dialect. Restricted versions of them terminology can be used on Center Dialect as well as the Development Rules Dialect.
• Frames. A frame label means a denial about an item and its attributes. These types of terminology match particles out of F-logic [KLW95]. You will find syntactic resemblance ranging from terms that have titled objections and you will structures, because services (otherwise characteristics) out of an object wind up as titled objections. But not, the semantics of those words are very different (come across Area Semantic Formations).
• Classification. These terms are used to explain the latest subclass and classification membership relationship. There’s two categories of class conditions: registration terms and conditions and subclass terms. Such as for example frames, these conditions have been lent off F-reason [KLW95].
• Equivalence. These words are used to associate other terminology.

pred:numeric-equivalent or pred:boolean-equal). Those predicates have fixed interpretations, which coincide with the interpretation of the equality terms defined in this document when the latter are evaluated over data types. General use of equality terms is supported in systems such as FLORA-2 [FL2], and special cases are also allowed in Relfun [RF99].

Terms are then used to define several types of RIF-FLD formulas. RIF dialects can choose to permit all or some of the aforesaid categories of terms. In addition, RIF-FLD introduces extension points, one of which allows the introduction of new kinds of terms. An extension point is a keyword that is not a syntactic construct per se, but a placeholder that is supposed to be replaced by specific syntactic constructs of an appropriate kind. RIF-FLD defines several types of extension points: symbols (NEWSYMBOL), connectives (), quantifiers (NEWQUANTIFIER), aggregate functions (NEWAGGRFUNC), and terms (NEWTERM).

not, away from analysis items, new translation of your equivalence terminology may vary in fact it is determined from the belongings in RIF records

Icon room partition the fresh new number of low-analytical signs you to definitely correspond to private constants, predicates, and procedures, and every partition is then provided a unique semantics. A symbol space have a keen identifier and you can good lexical room, which describes the new “shape” of one’s signs in this symbol place. Particular icon areas for the RIF are accustomed to pick Websites entities and their lexical room include strings you to definitely syntactically seem like internationalized financial support identifiers [RFC-3987], or Eye (e.g., Most other icon rooms are widely used to show the newest datatypes required by RIF (such as,