Abstract = {In SOA, composite applications can be developed 
on the basis of collections of interacting web services. A 
service's functionality is exposed to the external world by an 
abstract interface, described by the standard WSDL language, 
which must be published by service providers to public 
registries where service consumers can find them. Nowadays, 
web service discovery has become a real problem, because 
of the lack of public registries to publish and organize the 
fairly huge number of existing services. In this paper, we 
propose an approach based on formal concept analysis (FCA) 
for classifying and browsing web services. Using this approach, 
the web services are organized into a lattice structure, to 
facilitate their browse and selection. A service lattice reveals the 
invisible relations between the services, enabling the discovery 
of a needed service as well as the identification of its possible 
alternatives. Thus, service discovery may be achieved more 
easily using the service lattice. This facilitates the construction 
of service compositions and supports theto ensure a continuous functionality. 
	Address = {Barcelona, Spain},
	Author = {Zeina Azmeh and Marianne Huchard and Chouki Tibermacine and Christelle Urtado and Sylvain Vauttier},
	Booktitle = {Proceedings of the 5th International Conference on Internet and Web Applications and Services (ICIW 2010)},
	Keywords = {services / SOA, directories / registeries},
	Month = {May},
	Title = {Using concept lattices to support web service compositions with backup services},
	Year = {2010}}