Nomads - Enabling Distributed Analytical Service Environments for the Smart City Domain

摘要: The advent of the Smart City domain has led to creation massive amounts diverse data. Stakeholders in this need be able analyze data order make informed planning decisions. To address complex task, Distributed Analytical Environments (DAEs) have emerged. These environments consist different distributed analytical and services, which are composed a dynamic way deliver insights that crucial for stakeholders. Since these deal with business critical sensitive information, strict compliance constraints apply. lead situations where certain concrete services not allowed exchange data, even though their interaction is necessary produce desired results. Finding valid solution space possible instantiations non-trivial problem. In paper we introduce Nomads, framework enables service mobility such constrained composition overcome aforementioned restrictions. improves overall satisfiability therefore also quality DAEs. We outline requirements representative DAE scenario, provide detailed problem formulation, then discuss along our finding algorithm. evaluation demonstrates Nomads considerably increases number successfully performed compositions highly environments.