creators_name: Bryans, Jeremy W. creators_name: Fitzgerald, John S. creators_name: McCutcheon, Tom creators_id: jeremy.bryans@ncl.ac.uk creators_id: john.fitzgerald@ncl.ac.uk type: conference_item datestamp: 2011-04-12 12:33:22 lastmod: 2011-04-12 12:54:29 metadata_visibility: show title: Refinement-based techniques in the analysis of information flow policies for dynamic virtual organisations ispublished: submitted subjects: deploy_industrial_other subjects: examples full_text_status: public pres_type: paper keywords: Information Flow Policies Refinement-based Modelling Emergency Response Event-B Verification abstract: Dynamic virtual organisations (VOs) can arise in situations in which it is critical that they continue to operate, even in sub-optimal environments. Models of information flow in dynamic VOs are therefore needed in order to permit the rigorous verification of resilience properties before commitments are made to implementation. This paper proposes a refinement-based modelling approach for the design and analysis of VO policy resilience. The approach is demonstrated by using the refinement-based formalism Event-B to model a VO structure, commonly referred to as the Bronze/Silver/Gold structure that commonly arises in multi-agency response to emergencies. Machine-assisted proof is used to compare the validity of alternative information flow policies in Bronze/Silver/Gold when a fault is induced in the VO structure. date: 2011-04-12 date_type: submitted event_title: PRO-VE 2011 - 12th IFIP Working Conference on VIRTUAL ENTERPRISES event_location: Sao Paulo, Brazil event_dates: 17-19 October event_type: conference refereed: FALSE citation: Bryans, Jeremy W. and Fitzgerald, John S. and McCutcheon, Tom (2011) Refinement-based techniques in the analysis of information flow policies for dynamic virtual organisations. In: PRO-VE 2011 - 12th IFIP Working Conference on VIRTUAL ENTERPRISES, 17-19 October, Sao Paulo, Brazil. (Submitted) document_url: http://deploy-eprints.ecs.soton.ac.uk/298/1/pro-ve-submitted-0412.pdf