NESSI (Networked European Software and Services Initiative) is the European Technology Platform dedicated to Software and Services that groups several industries dedicated to the transformation of the software model into a service oriented economy.

 

In the context of the public sector, NESSI envisages a multi-disciplinary effort for tackling the resulting complexity of public services, based on technological, economic, social, and organizational aspects of service systems. Since February 2008, the iGovernment Working Group (NESSI-iGovernment WG) is contributing towards the creation and deployment of solutions in the areas of Digital Public Services, Electronic and Transformational Government, eInclusion and Citizen Trust. With the participation of Yannis Charalabidis, the Decision Support Systems Laboratory of NTUA within which GIC operates is a key member of the WG since its inception. GIC is thus closely affiliated to the work carried out within this NESSI initiative that in parallel promotes the GIC research and dissemination objectives through the NESSI large research community and industry liaisons.

 

Furthermore, NESSI has defined NEXOF as a coherent and consistent open service framework designed to guarantee quality of service, ubiquitous operation and continuous availability. NESSI has identified the strategy and plan to build this framework, starting with its reference architecture (RA), with the NEXOF-RA project coming to implement the initial phase of this plan. In this scope, NEXOF-RA has created an initial set of Investigation Teams and a corresponding meeting in order to formulate the teams and launch their work has been held in Brussels on March 23^rd, 2009. GIC participated actively in two of the interoperability-related topics, specifically: a) Runtime Service Composition and b) Metadata for Service Front End Resources.

 

For the Runtime Service Composition, George Gionis from GIC proposed an architecture for resolving technical interoperability aspects and bridging technical and organizational levels. The proposed approach combines powerful open source and commercial tools that exist today for service composition and orchestration, such as Enterprise Service Bus and Business Process Management environments. In this end, capabilities to facilitate run time service composition can be developed - for example definition and externalization of services for data transformation rules based on CCTS semantics, definition and externalization of services for business logic or business policy to orchestrate and compose service flows through rules in SBVR or RIF, definition and externalization of SAWSDL services to ontologies for lowering and lifting data, etc.

 

For the Metadata for Service Front End Resources (SFER), Fenareti Lampathaki representing GIC proposed an approach on how eGovernment Services Registries and Portals can semantically interact with the help of a SFER Catalogue in order to enhance user experience. Through the proposed metadata set describing all the information associated to Service Front End Resources, such semantic interoperability aspects indeed allow for SFERs integration and interaction into different platforms and environments, such as mash-up platforms or web runtimes.

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