Semantic Web technology is based on the OpenWorld Assumption (OWA) where absence of entities being searched does not entail negative response rather simply treated as facts "not available at the moment." On the one hand that indicates anticipation of future enhancements of the fact store while in other cases it is not preferred in situations where an authoritative answer is needed. Closed World Assumption (CWA) on the other hand returns definitive yes/no answers even in situations where future enhancements are inevitable. We wish to distinguish among the situations where one or the other assumption would be advantageous to use. Such distinction could cater for faster services discovery and more wholesome services orchestration. We apply this approach to discovering semantic Web services being offered by autonomous semantic robots out in the field and for building the unified worldview common to all. Consequently, the OWA-based paradigm alone is not suitable for most robotics platforms where cardinality and negation is not sound as well as in CWA. Therefore, we argue and display that a strategy to draw and utilize benefits of both world assumptions is beneficial.

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Tagging (or bookmarking) online resources with representative keywords is one of the most popular and practical approaches for giving identity to the objects. Human taggers in social tagging systems give identity to the objects. Tagged objects also represent the perception or identity of their human taggers in return. Although users' interest and their perception about Web content might change over time, most current approaches define a fixed identity for the objects.These approaches always recommend objects to the users based on their fixed, defined identities since they use a source of knowledge that does not evolve. In our social semantic tagging system, COD (Collaborative Ontology Development), we update identities of the users and Web contents dynamically based on the latest collective opinion of the evolving communities of relevant users [1]. In this poster, we present how entrepreneurs can define a reliable representation of their commonsense knowledge about different entrepreneurial entities by using COD. CODer Entrepreneurs in the automatically formed communities can dynamically improve identity of the entrepreneurial objects related to their expertise or interests.

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