Digital Ecosystems is the new paradigm for dynamic IT business integration. A Digital Ecosystem consists of institutions that compete, collaborate, and form stable or unstable federations. Such a dynamic environment becomes a bottleneck for identity management solutions. Existing solutions are either too restricting and not flexible enough to support the dynamic nature of ecosystems or they are too complex and difficult to adopt by Small and Medium-size Enterprises (SMEs).This paper presents an identity management model for automated processing of identity information between distributed ecosystem partners. The model emphasizes on its practical, clear and easy to deploy framework. The model is based on the new OASIS SAML standard to provide interoperability and convergence between existing identity technologies. The paper presents the basic and extended identity models for single services and service compositions.The aim of this research is to allow SMEs to use and enhance their current identity technology with a practical and easy to implement identity management solution that scales up to the dynamic and distributed nature of digital ecosystems.
Abstract-The Digital Ecosystem (DES) paradigm and consequently Digital Business Ecosystems (DBE) are powerful emerging inter-company cooperative structures. One of the main advantages of an ecosystem is the enabling of alliances among companies with complementary or even competitive competences in order to be able to provide complex offerings beyond the capabilities of a single company. The process of negotiation and contracting of complex services that can be provided in a cooperative manner by member companies of the ecosystem is an essential binding element among them. The intention of this paper is to explain how the Open Negotiation Environment (ONE) will extend DES research providing sophisticated negotiations processes and supporting tools, enriched by learning and optimisation capabilities, that will allow an organisation to dynamically package and compose complex services by negotiating alliances.
The growing diffusion of outsourcing and insourcing Following this parallelism with the natural ecosystem, practices in companies life motivated by enterprise efficiency, Digital Ecosystem (DE) paradigm and consequently Digital costs reduction policies and the increasing market dynamicity Business Ecosystems (DBE), are powerful emerging have motivated the need of distributed service oriented cooperative structures aiming to overcome the current information systems. The Business Ecosystems (BEs) concept limitations of commercial marketplace and centralized B2B defined by James Moore to describe the evolving interaction of systems. In the pervasive DE, different business "species" or business world elements, is taking advantage of the Web 2.0 organisms are enabled to evolve dynamically through the and B2B networking systems paradigms. These technologies establishment of alliances among entities with have enabled enterprises to efficiently cooperate in the digital complementary or even competitive competences. The first world towards the creation of Digital Ecosystems (DEs). An essential element of DEs is represented by the negotiation of and prime example of a DE implementation, trying to alliances, which enable companies to join competences as well
Abstract-In current peer-to-peer systems users interact with unknown services and users for the purpose of online transactions such as file sharing and trading of commodities. Peer-to-Peer reputation systems allow users to assess the trustworthiness of unknown entities based on subjective feedback from the other peers. However, this cannot constitute sufficient proof for many transactions like service composition, negotiations and coalition formation in which users require more solid proof of the quality of unknown services. Ratings certified by trusted third parties in the form of a security token are objective and reliable and, hence, allow building trust between peers. Because of the decentralized and distributed nature of peer-to-peer networks, a central authority (or hierarchy of them) issuing such certificates would not scale up. We propose a framework for peer-to-peer agencies interoperation based on rating certificates and metacertificates describing bilateral agencies relations.
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