Call for PapersPeer-to-Peer (P2P) architectures are intended to allow autonomous peers to interoperate in a decentralized, distributed manner for fulfilling individual and/or common goals. Peers have equivalent capabilities in providing other peers with data and/or services. Confederations of peers may be forged or broken opportunistically through the choices made by individual peers. The overall performance of a P2P network emerges from local point-to-point interactions of (all) peers on the network. The P2P paradigm in general offers a prospect of robustness, scalability and availability of large pool of storage and computational resources. The approach has been shown to be effective for basic but essential tasks such as file sharing. P2P, however, offers opportunities not addressed in existing architectures. They include the creation, maintenance, exchange, acquisition, and use of knowledge by peers. Because they are autonomous, peers can represent knowledge in a number of diverse forms, e.g. contexts, knowledge bases, files, databases, etc. In order to facilitate the interoperation, peers may agree on a shared conceptualization of a knowledge domain in the form of, for instance, ontology, and collectively maintain it over time. Apart from this, peers should be able to locate other peers, having required pieces of information and/or providing required services; agree on the meaning of the pieces of information (service delivery protocols) they want to exchange; and interoperate, based on the reached agreement, in a meaningful, purpose-driven way. The P2PKM workshop is intended to serve as an active forum for researchers and practitioners, where they will have the possibility to exchange and discuss novel ideas, research results and experiences, laying in the intersection of the P2P, Knowledge Management (KM), Semantic Web, databases, pervasive computing, agents, as well as other related fields. Topics of interest include but are not restricted to:
Important Dates
Submission InstructionsWe invite the submission of high quality technical papers. The submitted papers should be formatted as close as possible to the Springer LNCS style and must not exceed 12 pages including figures and references. Interested authors should send their papers by email to Ilya Zaihrayeu at ilya@dit.unitn.it. PDF format is preferred, but other formats (PS, DOC) are also acceptable. Accepted papers will be published in the CEUR workshop electronic proceedings, and hardcopies of the proceedings will be handed out at the workshop. At least one author of each accepted paper must attend the workshop to present their work. The authors of the best papers (dealing with issues related to semantics) will be invited to submit an extended version of their paper for a special issue of the LNCS Journal of Data Semantics. Organization
Invited TalksBernard Traversat, SUN Microsystems, USA Title: "JXTA™: Beyond P2P File Sharing, the Emergence of Knowledge Addressable Networks" Abstract: In the last couple of years, P2P applications such as music swapping, instant messaging, and media distribution have emerged as the most popular applications on the Internet. This P2P revolution has led the research community and computer industry to explore this novel way to communicate and distribute content on the Internet. P2P is fundamentally extending the traditional centralized content indexing model with a decentralized model where indexes are distributed, and used to dynamically route discovery queries to content provider peers, similarly to IP packets in an IP network. P2P is also fundamentally changing the way we address and locate contents on the Internet. From a physical IP addressing model, the Internet is reconstructed into a logical knowledge addressable network, where IP addresses are replaced by content IDs. Each P2P application has the ability to define its own logical network overlay providing its own ID representation, meta-data information, and query routing infrastructure allowing peers to self-organize into protected peer group domains. The talk will introduce the fundamental advantages of shifting from a physical IP addressing model to a logical knowledge addressing model for building content delivery network. We will cover some of the key issues that need to be addressed when building a P2P knowledge addressable network: content ID representation, meta-data ontology, peer churn rate, super-peer hierarchy, cost of maintaining a distributed index on an unstructured network, quality of services, and security and trust. We will illustrate our presentation using the JXTA platform. JXTA defines a standard set of protocols for ad hoc, pervasive, peer-to-peer (P2P) network that provides a generic platform for developing a variety of knowledge addressable network applications.
Matteo Bonifacio, ITC-Irst, Italy Title: "Centralized vs. Distributed Knowledge Management: Is it the right question?" Abstract: Until a few years ago the dominant conceptual model in knowledge management was the one of centralization. Organizations, consultants and software vendors where focused on providing solutions able to codify, store, and disseminate knowledge in terms of content. Driving concepts where those of corporate knowledge taxonomies and portals. In parallel, many research efforts have been made in order to define methods and tools able to support this paradigm focusing in particular on the creation of shared semantics whereby the driving concept was the one of ontology. More recently, the disappointing outcomes of KM experiences and the emergence of new technological paradigms (such as P2P) led to an opposite approach that views knowledge as an intrinsically distributed matter localized in social and cognitive contexts. Accordingly, both researchers and practitioners are now looking at Distributed Knowledge Management as a new possible answer, focusing on new driving concepts such as the one of semantic interoperability rather than standardization, and localized communities of practice rather than monolithic organizations. Still, weak signals are evidencing some potential limitations of this view. In this talk I will first explore the evolution from KM to DKM, and show a P2P solution that exemplifies such evolution (KEEx). Second, based on both the commercial experience of KEEx and some interdisciplinary research reflections, I will explore some of the weak signals that in my opinion should alert both DKM researchers and practitioners not to consider DKM as an alternative to centralized solutions. Each view represents an extreme of a trade-off that poses to researchers and practitioners intriguing as much as challenging questions.
Registration and AccommodationFor registration and accommodation details see corresponding page on the MobiQuitous conference web site, www.mobiquitous.org.
Contact UsTo contact us, send email to ilya@dit.unitn.it.
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