Title :
Exploiting hierarchical global views for query reformulation
Author :
Diamantini, C. ; Panti, M.
Author_Institution :
Ist. di Inf., Ancona Univ., Italy
Abstract :
In this paper, we introduce the concept of hierarchical global views to support query reformulation in mediator architectures. In particular, we show how the characteristics of a cluster hierarchy can be exploited in the query reformulation phase in order to comply with the user information requirements, expressed in terms of answer precision and recall under response time constraints, which are well-known indexes of performance in information retrieval
Keywords :
performance index; query formulation; relevance feedback; answer precision; answer recall; cluster hierarchy; hierarchical global views; information retrieval performance; mediator architectures; query reformulation; response time constraints; user information requirements; Computer architecture; Delay; Logic; Mediation; Neural networks; Ontologies; Open systems;
Conference_Titel :
Knowledge and Data Engineering Exchange, 1999. (KDEX '99) Proceedings. 1999 Workshop on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7695-0453-1
DOI :
10.1109/KDEX.1999.836628
