TY - CHAP TI - Self-expression and Dynamic Attribute-Based Ensembles in SCEL AV - none KW - Self-expression; coordination patterns; ensemble computing UR - http://dx.doi.org/10.1007/978-3-662-45234-9_11 SN - 978-3-662-45233-2 N2 - 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. N1 - 6th International Symposium, ISoLA 2014, Imperial, Corfu, Greece, October 8-11, 2014, Proceedings, Part I ID - eprints2940 T2 - Leveraging Applications of Formal Methods, Verification and Validation. Technologies for Mastering Change EP - 163 Y1 - 2014/// A1 - Cabri, Giacomo A1 - Capodieci, Nicola A1 - Cesari, Luca A1 - De Nicola, Rocco A1 - Pugliese, Rosario A1 - Tiezzi, Francesco A1 - Zambonelli, Franco PB - Springer T3 - Lecture Notes in Computer Science SP - 147 ER -