Other
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmin11b1088d&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #IN11B-1088
Other
4
[0400] Biogeosciences, [1916] Informatics / Data And Information Discovery, [1946] Informatics / Metadata, [1978] Informatics / Software Re-Use
Scientific paper
While general-purpose search engines (such as Google or Bing) are useful for finding many things on the Internet, they are often of limited usefulness for locating Earth Science data relevant (for example) to a specific spatiotemporal extent. By contrast, tools that search repositories of structured metadata can locate relevant datasets with fairly high precision, but the search is limited to that particular repository. Federated searches (such as Z39.50) have been used, but can be slow and the comprehensiveness can be limited by downtime in any search partner. An alternative approach to improve comprehensiveness is for a repository to harvest metadata from other repositories, possibly with limits based on subject matter or access permissions. Searches through harvested metadata can be extremely responsive, and the search tool can be customized with semantic augmentation appropriate to the community of practice being served. However, there are a number of different protocols for harvesting metadata, with some challenges for ensuring that updates are propagated and for collaborations with repositories using differing metadata standards. The Open Archive Initiative Protocol for Metadata Handling (OAI-PMH) is a standard that is seeing increased use as a means for exchanging structured metadata. OAI-PMH implementations must support Dublin Core as a metadata standard, with other metadata formats as optional. We have developed tools which enable our structured search tool (Mercury; http://mercury.ornl.gov) to consume metadata from OAI-PMH services in any of the metadata formats we support (Dublin Core, Darwin Core, FCDC CSDGM, GCMD DIF, EML, and ISO 19115/19137). We are also making ORNL DAAC metadata available through OAI-PMH for other metadata tools to utilize, such as the NASA Global Change Master Directory, GCMD). This paper describes Mercury capabilities with multiple metadata formats, in general, and, more specifically, the results of our OAI-PMH implementations and the lessons learned.
References: [1] R. Devarakonda, G. Palanisamy, B.E. Wilson, and J.M. Green, "Mercury: reusable metadata management data discovery and access system", Earth Science Informatics, vol. 3, no. 1, pp. 87-94, May 2010.
[2] R. Devarakonda, G. Palanisamy, J.M. Green, B.E. Wilson, "Data sharing and retrieval using OAI-PMH", Earth Science Informatics DOI: 10.1007/s12145-010-0073-0, (2010).
[3] Devarakonda, R.; Palanisamy, G.; Green, J.; Wilson, B. E. "Mercury: An Example of Effective Software Reuse for Metadata Management Data Discovery and Access", Eos Trans. AGU, 89(53), Fall Meet. Suppl., IN11A-1019 (2008).
Devarakonda Ranjeet
Green James M.
Palanisamy Giri
Wilson Bruce E.
No associations
LandOfFree
Improving Scientific Metadata Interoperability And Data Discoverability using OAI-PMH does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Improving Scientific Metadata Interoperability And Data Discoverability using OAI-PMH, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improving Scientific Metadata Interoperability And Data Discoverability using OAI-PMH will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1501987