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Mobile peer-to-peer (P2P) computing with applications such as for video on demand, file sharing, and video conferencing is gaining momentum based on new standards and technologies such as IETF PPSP, WiFi-Direct and BitTorrent live streaming. In this paper, we describe the mobile system MyMedia, that allows users to search, share and experience videos and(More)
We present a dynamic semantic data replication scheme called DSDR for classic k-random search in unstructured peer-to-peer (P2P) networks. During its k-random search each peer periodically updates its local view on the semantic overlay of the network based on observed queries (demand) and received information about provided items (supply), in particular(More)
In this paper, we present a semantic-driven k-walkers-based search scheme, called S2P2P, for data information dissemination and query routing in unstructured peer-to-peer (P2P) networks. In S2P2P, each peer maintains its observation on the semantics of received queries (demands) and data information (supplies), as well as a local view on network topology.(More)
The convergence of information technologies (IT) has enabled the Digital Enterprise in which engineering, production planning, manufacturing and sales processes are supported by IT-based collaboration, simulation and enactment. As a result, borders between reality and its virtual representations become increasingly blurred. Advanced tools need to support(More)
In this paper, we present a new repository, called iRep3D, for efficient retrieval of semantically annotated 3D scenes in XML3D, X3D or COLLADA. The semantics of a 3D scene can be described by means of its annotations with concepts and services which are defined in appropriate OWL2 ontologies. The iRep3D repository indexes annotated scenes with respect to(More)
The paper presents an agent-supported framework for improving solutions for enterprise interoperability and enterprise collaboration. We present the context of COIN in the European research area and explain the basic approach and system architecture COIN is aiming at. Special emphasis is put on how agents can support enterprise interoperability as well as(More)
The problem of automated semantic peer-to-peer (P2P) service composition has been addressed in cross-disciplinary research of semantic web and P2P computing. Solutions for semantic web service composition in structured P2P networks benefit from the underlying distributed global index but at the cost of network traffic overhead for its maintenance. Current(More)
We present the open 3D Internet research platform ISReal for semantic-enabled intelligent 3D simulations of realities in a XML3D web browser. For this purpose, the platform integrates semantic Web technologies, semantic services, intelligent agents, verification and web-based 3D graphics. In addition, we describe our vision of a scalable web-based multiuser(More)
In this paper, we present iRep3D 2.0, a semantic-based repository for efficient deep search of 3D scenes in X3D, XML3D and COLLADA. It supports real time hybrid semantic retrieval of3D scenes in terms of their syntactic, conceptual, functional and geometric features. This is enabled via off-line indexing over annotated 3D (sub-) scenes with respect to(More)