Sethood and Situations
نویسندگان
چکیده
In Situations and Atti tudes (Barwise and Perry 1983) Barwise and Perry decide that meaning should be taken to be a triadic relation not a dyadic one. While there may be good reasons for deciding to procede on this basis, one of the reasons they give is definitely a bad one, and this is the principal subject of this note. On pages 222-23 they remark that if meaning is to be a dyadic relation it is necessary that the complement of a situation shou ld -a t least somet imes-be another situation. In the set theory that is the basis for their d e v e l o p m e n t K P U i t is elementary that the complement of a set is never a set. This compels the designers of situation semantics to make meaning a triadic relation as we will now explain. Barwise and Perry take individuals , propert ies , relations, and locations as primitives. A si tuat ion-type is a partial function from n-ary relations and n individuals to the set {0, 1} (p. 8). In mode rn situation-semantic parlance, this is often referred to as an infon, or (more precisely) a basic infon. An event, or course-of-events (coe), is a function from locations to situation-types. For example, the situation-type corresponding to a (real-world) situation in which a dog named Molly barks would be:
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ورودعنوان ژورنال:
- Computational Linguistics
دوره 22 شماره
صفحات -
تاریخ انتشار 1996