We present a deductive data model for concept-based query expansion. It is based abstraction levels: the conceptual, the expression and the occurrence level. Concepts and their re...
In this paper we propose a framework that can be used for the implementation of reliable multi database system communication protocols. The framework provides transactions on shar...
Meerkat is a distributed memory multicomputer architecture that scales to hundreds of processors. Meerkat uses a two dimensional passive backplane to connect nodes composed of pro...
For object-oriented databases we propose a new technique for optimizing queries containing method invocations. This technique is based on the definition of inverse methods and que...
This paper studies a logical framework for automated negotiation between two agents. We suppose an agent who has a knowledge base represented by a logic program. Then, we introduc...