Extending answers to neighbour entities in a cooperative answering context

摘要

When a user has to retrieve information in a Database, a standard DBMS provides him just the exact answers to his queries. In a Cooperative Answering context a system has to provide him additional interesting information. In this paper we present a method to determine the interesting information from a given query and a knowledge base which represents the expertise of an expert in providing information. In this knowledge base are represented rules defining neighbour entities. These entities are obtained by extending the query to neighbour entity types or to neighbour conditions. The knowledge base is formalized in First Order Logic with two language levels: object level and metal level. The concept of neighbourhood between predicates or conditions is expressed at the metal level.