LibraRing: An Architecture for Distributed Digital Libraries Based on DHTs

Abstract

Abstract. We present a digital library architecture based on distributed hash tables. We discuss the main components of this architecture and the protocols for offering information retrieval and information filtering functionality. We present an experimental evaluation of our proposals.

Atlas: Storing, updating and querying RDF(S) data on top of DHTs

“…We close by pointing out that P2P architectures of digital libraries have been very popular lately starting with [10]. See for example, [43,44,45].…”

“…To demonstrate how Atlas can be used in such application scenarios, we consider the case of distributed digital libraries (DDLs) that our group has previously studied in [10] using P2P systems based on data models from the area of Information Retrieval. The use of Atlas to implement a distributed Grid service registry in the context of project OntoGrid has already been discussed in [9].…”

“…According to [10], there are two kinds of basic functionality that one can expect by a DDL: information retrieval and publish/subscribe. In the information retrieval scenario, a user poses a query (e.g., "I am interested in papers on the Semantic Web") and the DDL returns matching resources.…”

“…Example of such systems are presented in [7,8,9,10,11,12] 1 . More generally, since centralized RDF stores are $ This work was partially funded by FP6/IST project OntoGrid, project "Peer-to-Peer Techniques for Semantic Web Services" funded from the Greek General Secretariat for Research and Technology and FP7/ICT project SemsorGrid4Env.…”

“…Email addresses: zoi@di.uoa.gr (Zoi Kaoudi), koubarak@di.uoa.gr (Manolis Koubarakis), kkyzir@di.uoa.gr (Kostis Kyzirakos), iris@di.uoa.gr (Iris Miliaraki ,$$ ), matoula@di.uoa.gr (Matoula Magiridou), apapadak@di.uoa.gr (Antonios Papadakis-Pesaresi) 1 Although RDF is the chosen metadata model for resource annotation only in [7,9], we can easily see how it could have been used in [8,10,11,12]. See also Section 4. lacking the reliability properties typically associated with large distributed systems [13] (e.g., fault-tolerance, load balancing, availability etc.…”