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Extended date/time format (EDTF) in the digital public library of America's metadata: Exploratory analysis
Author(s) -
Zavalina Oksana L.,
Alemneh Daniel Gelaw,
Kizhakkethil Priya,
Phillips Mark E.,
Tarver Hannah
Publication year - 2015
Publication title -
proceedings of the association for information science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.193
H-Index - 14
ISSN - 2373-9231
DOI - 10.1002/pra2.2015.145052010066
Subject(s) - metadata , computer science , metadata repository , world wide web , information retrieval , benchmark (surveying) , metadata modeling , resource (disambiguation) , relation (database) , digital library , database , geography , cartography , computer network , art , poetry , literature
Considering the value of dates in the life cycle of the digital resource, capturing and storing dates metadata in a structured way can have a significant impact on information retrieval. There are a number of format conventions in common use for encoding the date and time values; the Extended Date/Time Format (EDTF) is one of the most expressive. This paper presents results of an exploratory analysis of representation of dates in over 8 million metadata records from one of the largest digital aggregators, Digital Public Library of America (DPLA), and compares it to EDTF specifications. This benchmark study provides empirical data – at both the individual provider level and the group level (content hubs or service hubs) – about the overall level and patterns of application of date metadata in DPLA metadata records in relation to EDTF.