Power to the people: end-user building of digital library collections
Proceedings of the 1st ACM/IEEE-CS joint conference on Digital libraries
Creating virtual collections in digital libraries: benefits and implementation issues
Proceedings of the 2nd ACM/IEEE-CS joint conference on Digital libraries
Proceedings of the 2nd ACM/IEEE-CS joint conference on Digital libraries
Formal Concept Analysis: Mathematical Foundations
Formal Concept Analysis: Mathematical Foundations
Information Processing and Management: an International Journal
Ncore: architecture and implementation of a flexible, collaborative digital library
Proceedings of the 8th ACM/IEEE-CS joint conference on Digital libraries
Mopseus: a digital library management system focused on preservation
ECDL'10 Proceedings of the 14th European conference on Research and advanced technology for digital libraries
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Digital Libraries collections are an abstraction mechanism, endowed with an extension and an intension, similarly to predicates in logic. The extension of a collection is the set of objects that are members of the collection at a given point in time, while the intension is a description of the meaning of the collection, that is the peculiar property that the members of the collection possess and that distinguishes the collection from other collections. This view reconciles the many types of collections found in Digital Library systems, but raises several problems, among which how to automatically derive the intension from a given extension. This problem must be solved e.g. for the creation of a collection from a set of documents. We outline basic results on the problem and then show how intensions can be exploited for carrying out basic tasks on collections, establishing a connection between Digital Library management and data integration.