Initial Experiences Re-Exporting Duplicate and Similarity Computation with an OAI-PMH aggregator

Details Initial Experiences Re-Exporting Duplicate and Similarity Computation with an OAI-PMH aggregator Initial Experiences Re-Exporting Duplicate and Similarity Computation with an OAI-PMH aggregator

2004-01-05

arxiv.org/abs/cs/0401001v1

Computer Science

Digital Libraries

10 pages

Scientific paper

The proliferation of the Open Archive Initiative Protocol for Metadata Harvesting (OAI-PMH) has resulted in the creation of a large number of service providers, all harvesting from either data providers or aggregators. If data were available regarding the similarity of metadata records, service providers could track redundant records across harvests from multiple sources as well as provide additional end-user services. Due to the large number of metadata formats and the diverse mapping strategies employed by data providers, similarity calculation requirements necessitate the use of information retrieval strategies. We describe an OAI-PMH aggregator implementation that uses the optional ``'' container to re-export the results of similarity calculations. Metadata records (3751) were harvested from a NASA data provider and similarities for the records were computed. The results were useful for detecting duplicates, similarities and metadata errors.

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