Metadata synthesis and updates on collections harvested using the open archive initiative protocol for metadata harvesting
Authors: Kapidakis, Sarantos 
Issue Date: 1-Jan-2018
Conference: International Conference on Theory and Practice of Digital Libraries 
Book: Digital Libraries for Open Knowledge 
Series: Lecture Notes in Computer Science
Volume: 11057 LNCS
Keywords: Dublin core elements, Evolution, Harvesting, Metadata, OAI-PMH, Patterns, Quality, Reliability
Abstract: 
Harvesting tasks gather information to a central repository. We studied the metadata returned from 744179 harvesting tasks from 2120 harvesting services in 529 harvesting rounds during a period of two years. To achieve that, we initiated nearly 1,500,000 tasks, because a significant part of the Open Archive Initiative harvesting services never worked or have ceased working while many other services fail occasionally. We studied the synthesis (elements and verbosity of values) of the harvested metadata, and how it evolved over time. We found that most services utilize almost all Dublin Core elements, but there are services with minimal descriptions. Most services have very minimal updates and, overall, the harvested metadata is slowly improving over time with “description” and “relation” improving the most. Our results help us to better understand how and when the metadata are improved and have more realistic expectations about the quality of the metadata when we design harvesting or information systems that rely on them.
ISBN: 9783030000653
ISSN: 16113349
03029743
DOI: 10.1007/978-3-030-00066-0_2
URI: https://uniwacris.uniwa.gr/handle/3000/472
Type: Conference Paper
Department: Department of Archival, Library and Information Studies 
School: School of Administrative, Economics and Social Sciences 
Affiliation: University of West Attica (UNIWA) 
Appears in Collections:Book Chapter / Κεφάλαιο Βιβλίου

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