Automatic composition of information-providing web services based on query rewriting

Automatic QoS-aware Web Services Composition based on Set-Cover Problem

By definition, web-services composition works on developing merely optimum coordination among a number of available web-services to provide a new composed web-service intended to satisfy some users requirements for which a single web service is not (good) enough. In this article, the formulation of the automatic web-services composition is proposed as several set-cover problems and an approxima...

A Rewriting Logic Approach for Automatic Composition of Web Services

Nowadays, Web Services (WS) remain a main actor in the implementation of distributed applications. They represent a new promising paradigm for the development, deployment and integration of Internet applications. These services are in most cases unable to provide the required functionality; they must be composed to provide appropriate services, richer and more interesting for other applications...

Web Services-based Query Rewriting and Resolution in Loosely Coupled Information Systems

Query Rewriting for Semantic Web Information Integration

Though significant research has been done in the realm of information integration, continuously increasing amounts and complexity of data demand more advanced techniques for its access. Semantic Web technologies such as OWL and SWRL provide the capacity for rich definitions of data sources, global views, and the mappings between them. An information integration system based on these technologie...

A Tool based on Web Services to Query Biodiversity Information

Biodiversity Information Systems are complex software systems that present data management solutions to allow researchers to analyze species and their interactions. The complexity of these systems varies with the data handled, users targeted and environment in which they are executed. An open problem to be faced especially in a Web environment is data heterogeneity, and the diversity of user vo...