HR: 0800h
AN: SF31A-0720    [Abstracts]
TI: A Dynamic Metadata Community Profile for CUAHSI
AU: * Bermudez, L
EM: leb27@drexel.edu
AF: Drexel University, 3141 Chestnut Street, Philadlephia, PA 19104
AU: Piasecki, M
EM: Michael.Piasecki@drexel.edu
AF: Drexel University, 3141 Chestnut Street, Philadlephia, PA 19104
AB: Common Metadata standards typically lack of domain specific elements, have limited extensibility and do not always resolve semantic heterogeneities that could occur in the annotations. To facilitate the use and extension of metadata specifications a methodology called Dynamic Community Profiles, DCP, is presented. The methodology allows to overwrite elements definitions and to specify core elements as metadata tree paths. DCP uses the Web Ontology Language (OWL), the Resource Description Framework (RDF) and XML syntax to formalize specifications and to create controlled vocabularies in ontologies, which enhances interoperability. This methodology was employed to create a metadata profile for the Consortium of Universities for the Advancement of Hydrologic Science Inc. (CUAHSI). The profile was created by extending ISO-19115:2003 geographic metadata standard and restricting the permissible values of some elements. The values used as controlled vocabularies were inferred from hydrologic keywords found in the Global Change Master Directory (GCMD) and from measurement units found in the Hydrologic Handbook. Also, a core metadata set for CUAHSI was formally expressed as tree paths, containing the ISO core set plus additional elements. Finally a tool was developed to test the extension and to allow creation of metadata instances in RDF/XML which conforms to the profile. Also this tool is able to export the core elements to other schema formats such as Metadata Template Files (MTF).
UR: http://loki.cae.drexel.edu:8080/web/how/me/metadatacuahsi.html
DE: 9350 North America
DE: 9820 Techniques applicable in three or more fields
DE: 1899 General or miscellaneous
DE: 1800 HYDROLOGY
SC: Special Focus: Advances in Data Acquisition, Management, Analysis and Display [SF]
MN: 2004 AGU Fall Meeting