ABSTRACT
Abstra t. Web servi es provide a suitable level of abstra tion and en ap-
sulation for the development of appli ations out of reusable and distributed
omponents. However, in order to in rease the appli ability of servi es as
well as to ne tune their exe ution in parti ular situations, ontext-adaptive
solutions are in reasingly required. In this hapter we des ribe a generi
knowledge-based framework for supporting the adaptation of Web servi es
and Web servi e-based appli ations to ontext. The framework builds upon
resear h in semanti Web servi es and Knowledge Engineering to support
apturing ontextual information in a way that is dire tly amenable to au-
tomated reasoning in order to support the re ognition of relevant ontextual
information that is then used for sele ting the most appropriate servi e or set
of servi es to be exe uted.
