Story-Understanding System which Make Use of Belief Revision Mechanism

Abstract

A story understanding system using belief revision mechanism is described. The system uses TMS, written by Doyle <(1)>. The system maintains multiple belief spaces for each person in a story, along with one real space which stands for "absolute truth" about the story. Especially, a new method to deal with contradiction between each person's belief spaces is proposed. In addition, a script can handle multiple paths and branches at any point, and such branches can cause revision of multiple states wholly over the script and belief spaces. To achieve this, when one knowledge requested invocation of some relative knowledge accompanying it (superordinate knowledge, etc.), a daemon process may be invoked to construct dependency links between related events