In this paper a high performance storage system for RDF documents is introduced. The system employs optimized index structures for RDF data and efficient RDF query evaluation. The index scheme consists of 3 types of indices. Triple index manages basic RDF triples by dividing original RDF graph into several sub-graphs. Path index manages frequent RDF path patterns for long path query performance...

In this work we describe a dialog system developed into the DIHANA project. This system consists of seven modules: an automatic speech recognizer, a language understanding module, a dialog manager, a module that manages the queries to the database, a natural language answer generator, a text-to-speech converter and, finally, a central communication manager. For the implementation of the system,...

We present an eecient array data ow analysis based global communication optimizer which manages the analysis cost by partitioning the data ow problems into subproblems and solving the subproblems one at a time in a demand driven manner. In comparison to traditional array data ow based techniques, our scheme greatly reduces the memory requirement and manages the analysis time more eeectively. Th...

This paper presents a Q-learning based scheme for managing the partial coverage problem and the ill effects of free riding in unstructured P2P networks. Based on various parameter values collected during query routing, reward for the actions are computed and these rewards are used for updating the corresponding Q-values of peers. Thus, the routing is done through only nodes, which have shown hi...

This paper presents an approach based on the analysis, design, and formal verification of a multi-agent based university Information Management System (IMS). University IMS accesses information, creates reports and facilitates teachers as well as students. An orchestrator agent manages the coordination between all agents. It also manages the database connectivity for the whole system. The propo...