Istituto di Scienza e Tecnologie dell'Informazione     
Candela L., Castelli D., Manghi P., Pagano P. OAI-Aggregator Services for Enhanced Cross-Repository Services. Maristella Agosti, Floriana Esposito, Costantino Thanos (eds.). Pisa: DELOS Network of Excellence on Digital Libraries, 2007.
Cross-Repository Services operate over an Information Space obtained as the aggregation of a number of OAI-compliant Repositories. Typically, such Information Space is populated by OAI-Aggregator Services, which integrate the results of harvesting OAI-Items from the individual Repositories according to one common metadata format. This work presents an alternative aggregation process, in which special Aggregator Services (i) harvest full OAI-Items from the Repositories, i.e. not only one metadata format view, but all the OAI-Item metadata records, and (ii) enrich all harvested OAI-Items with new metadata, which uniformly describes the OAI-Item beyond Dublin Core (Item Metadata Format). The richness of such Information Space gives support for the creation of enhanced Cross-Repository Services. The European Project DRIVER, which faces the realization of a European Repository Infrastructure, adopts this technology and proves its benefits.
Subject Digital Library
Open Archives Initiative
H.3.7 Digital Libraries

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