Metadata Quality Assurance : The University of North Texas Libraries Experience Daniel Gelaw Alemneh & Hannah Tarver 3rd annual Texas Conference on Digital.

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Presentation transcript:

Metadata Quality Assurance : The University of North Texas Libraries Experience Daniel Gelaw Alemneh & Hannah Tarver 3rd annual Texas Conference on Digital Libraries (TCDL) May 27-28, 2009

Information Retrieval. Match Document Document Representation Query Information Need Bates, M. J. (1989). The design of browsing and berrypicking techniques for the online search interface. Online Review, 13(5),

Trends Information creation, organization, retrieval, use, and preservation is becoming more complex User as creator, annotator, indexer, searcher, and eventual user of his/her content Visualization of the information space instead of a ranked list of search results

Total Sites Across All Domains August 1995-April Jan 1996Jan 2000Jan 2005 Apr 2009 Hostnames Active

Digital Projects UNT Digital Collections Portal to Texas History Collaborators Congressional Research Service Archives Other Statewide and National Projects

Factors Influencing Metadata Quality Local Requirements: Objects Granularity Functionality Collaborative Requirements: Diversity of Users Interoperability Digital Rights Issues

Ambiguities Poor recall Poor precision Inconsistency of search results Poor Metadata Quality

Common Errors The data is: Incorrect Missing Ambiguous

Metadata Quality Assurance Mechanisms & Tools at UNT Pre-Ingest Post-Ingest Training Creation Tools Proofing & Editing Tools Analysis Tools

Training Face-to-Face Instruction Metadata Schema & Documentation Internal Project Wikis Staff Support

Metadata Creation Template

Template Validation

Template Reader

jEdit Text Editor

UNT Metadata Analysis Tools: Post-ingest

Enhanced by Highlighter – On/Off Enhanced by Qualifier – Use/Ignore

Null Value Analysis Tools

Controlled Vocabularies (UNTL-BS)

Better Metadata More Functionality

Better Metadata More Functionality

Summary Determine level of quality required Determine nature of gap and how to close it Machine verses human error handling Compromise Prioritize Test the workflow

UNTL Metadata UNTL Metadata Generation User System Precision Recall Browsing Searching Data Entry Evaluation Understanding ChangeChange Measure Quality and Usefulness of UNT Metadata

References & Web Sites Consulted Bates, M. J. (1989). The design of browsing and berrypicking techniques for the online search interface. Online Review, 13(5), Netcraft (2009). April 2009 Web Server Survey. Retrieved May 19 th, 2009 from OCLC (2007). Sharing, privacy and Trust in our Networked World. Retrieved May 19 th, 2009 from TechSmith, Co. (2008). UX 2.0: Any User, Any Time, Any Channel. Retrieved May 19 th, 2009 from: UNT Libraries Metadata Initiative page. Retrieved May 19 th, 2009 from:

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