built works registry: geocoding biodiversity heritage library
DESCRIPTION
An overview of BHL's geocoding of Library of Congress Subject Headings and display of resulting data. Built Works Registry. 11 July 2012.TRANSCRIPT
Built Works Registry: Geocoding BHL
Email: [email protected]
Twitter: @chrisfreeland
Chris FreelandDirector, Center for Biodiversity Informatics, Missouri Botanical Garden
Technical Director, Biodiversity Heritage Library
Data for Geocoding: Library catalogue records (MARC21)
Subject Heading from library catalogue:
Hunting – AfricaAnimal behavior
<- Expressed as MARCXML
$z phrases are extracted & submitted to Google Maps API & GeoNames API
Admin screens for data editing, adjustment
Limitations: False positives
• Not many from MARC records– Curated data, marked up
• Many in automated data mining
X
Limitations: Name variations & centroids
Limitation: Historic names
Additional details
http://journal.code4lib.org/articles/52
Geocoding LCSH in the Biodiversity Heritage LibraryReusing metadata generated through years of cataloging practice is a natural and pragmatic way of leveraging an institution’s investment in describing its resources. Using Library of Congress Subject Headings (LCSH), the Biodiversity Heritage Library generates new interfaces for browsing and navigating books in a digital library. LCSH are grouped into tag clouds and plotted on interactive maps using methods available within the Google Maps Application Programming Interface (API). Code examples are included, and issues related to these interfaces and the underlying LCSH data are examined.
Chris Freeland, Martin Kalfatovic, Jay Paige, and Marc Crozier
Email: [email protected]
Twitter: @chrisfreeland
Chris FreelandDirector, Center for Biodiversity Informatics, Missouri Botanical Garden
Technical Director, Biodiversity Heritage Library