Towards Dynamic Context Discovery and Composition

A Context Model for Service Composition Based on Dynamic Description Logic

A service composition task for service broker is to discovery and compose provider’s services to satisfy user’s request. Many researchers model the context utilizing ontology-based or attribute-based method to assist service composition. We propose a new context model by combining the context logic with the dynamic description logic (DDL), where user’ context, provider’s context and broker’s co...

Ocean. Towards Web-scale context-aware computing: A community-centric, wide-area approach for in-situ, context-mediated component discovery and composition

Ontology-based Semantic Interoperability Tools for Service Dynamic Discovery

Enterprises and networked enterprises need today effective communication and exchange of distributed data and services under dynamic and context-dependent requirements. Semantic interoperability is considered a key issue to enforce dynamic discovery and composition of distributed data and services. In this paper we specifically address the problem of service discovery and we present an ontology...

Towards a semantic- and context-based approach for composing web services

Despite the widespread adoption of web services, several obstacles still hinder their smooth automatic composition. First, techniques that exploit semantic information during web services discovery are still lagging behind despite multiple initiatives like OWL-S. Second, the context in which web services evolve is, to a certain extent, ignored. This prevents deploying adaptable web services. In...

Semantic middleware for context services composition in ubiquitous computing

In this paper, we describe a semantic middleware which aims to provide ubiquitous computing applications with high level contextual knowledge. The proposed middleware architecture is designed around service agent entities, offering transparent and reusable services for context semantic discovery, capture and aggregation. Aggregation of contextual knowledge is modeled using services composition ...