%0 Book Section
%A Cabri, Giacomo
%A Capodieci, Nicola
%A Cesari, Luca
%A De Nicola, Rocco
%A Pugliese, Rosario
%A Tiezzi, Francesco
%A Zambonelli, Franco
%B Leveraging Applications of Formal Methods, Verification and Validation. Technologies for Mastering Change
%D 2014
%F eprints:2940
%I Springer
%K Self-expression; coordination patterns; ensemble computing
%N 8802
%P 147-163
%S Lecture Notes in Computer Science
%T Self-expression and Dynamic Attribute-Based Ensembles in SCEL
%U http://eprints.imtlucca.it/2940/
%X In the field of distributed autonomous computing the current trend is to develop cooperating computational entities enabled with enhanced self-* properties. The expression self-* indicates the possibility of a component inside an ensemble, i.e. a set of collaborative autonomic components, to self organize, heal (repair), optimize and configure with little or no human interaction. We focus on a self-* property called self-expression, defined as the ability to deploy run-time changes of the coordination pattern of the observed ensemble; the goal of the ensemble is to achieve adaptivity by meeting functional and non-functional requirements when specific tasks have to be completed. The purpose of this paper is to rigorously present the mechanisms involved whenever a change in the coordination pattern is needed, and the interactions that take place. To this aim, we use SCEL (Software Component Ensemble Language), a formal language for describing autonomic components and their interactions, featuring a highly dynamic and flexible way to form ensembles based on components’ attributes.
%Z 6th International Symposium, ISoLA 2014, Imperial, Corfu, Greece, October 8-11, 2014, Proceedings, Part I