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Digital library architecture (WP1)Cluster homepage | List of publicationsCluster objectivesFuture digital libraries should enable any citizen to access human knowledge any time and anywhere, in a friendly, multi-modal, efficient, and effective way. A core requirement for such digital libraries is a common infrastructure which is highly scalable, customizable and adaptive. Ideally, the infrastructure combines concepts and techniques from peer-to-peer data management, grid computing middleware, and service-oriented architectures. Peer-to-peer architectures allow for loosely coupled integration of information services and sharing of information such as recommendations and annotations. Different aspects of peer-to-peer systems (e.g. indexes, and P2P application platforms) must be combined. Grid computing middleware is needed because certain services within digital libraries are complex and computationally intensive (e.g., extraction of features in multimedia documents to support content-based similarity search or for information mining in bio-medical data). The service-oriented architecture provides mechanisms to describe the semantics and usage of information services. Moreover, it supports mechanisms to combine services into workflow processes for sophisticated search and maintenance of dependencies. The main objective of this work package therefore is the conceptual and experimental evaluation of the impact of these three main directions to a digital library architecture. A thorough evaluation of existing approaches shall reveal the advantages and disadvantages of either approach. For a quantification of the evaluation, benchmarks have to be developed jointly. In particular, this work package will focus on the following issues:
Cluster activitiesTo achieve the goals sketched above, the following activities will be carried out:
Expected Results
Cluster report in DELOS Newsletter, Issue 1, April 2004 Feature article in DELOS Newsletter, Issue 2, October 2004 Cluster report in DELOS Newsletter, Issue 2, October 2004 Cluster report in DELOS Newsletter, Issue 3, June 2005 Cluster Activities of JPA2: During JPA2 (January 2005 – June 2006) the primary goals of the first 18 months of the project will continue to be actively pursued. General Digital Library Architecture issues will continue to be considered in JPA2, with the main focus aiming at the development of a DL reference model. At the same time, two new tasks in JPA2 will more concentrate on digital library architectures for special purposes. The main focus will be on Digital Library Architecture for e-Health applications. One of the goals of WP1 will therefore be the investigation and provision of a dependable platform. Stream data play an important role in e-Health applications. So, the platform must also support stream processing based on the integration of stream operators and web services.
More details about the cluster activities can be found at:
Expected Results of JPA2: · Reference Architecture of Digital Library Management Systems
Deliverables The deliverables of this cluster can be found at: Cluster coordinator Hans-Jörg Schek University of Konstanz
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