Support for the Learner: Time Periods

   One can search for places by using place names but the name and features of place vary with time, so in a well-formed Gazetteer each entry needs a time coding to indicate when the place had that name and/or character.
   Just as locations are referred to by place names so also spans of time are commonly referred to by period names, such as "Neolithic ruins", "Elizabethan drama", "Napoleonic wars" or "Weimar." But time periods, in turn, have a geographical aspect: "Neolithic" denotes different times in different areas. We are working on designs and best practice recommendations for "Time Period Directories" analogous to gazetteers for place names.

Technical Reports
Leveraging Library of Congress Subject Headings to improve Search for Events - A Time Period Directory (PDF)
Appendix 1: ECAI Time Period Directory Content Standard, 2005 (XML Schema)
Appendix 2: XML Time Period Directory Instance, 2005 (PDF)
Appendix 3: Time Period Type List (Feinberg et al., 2003) (PDF)

Articles
Time Period Directories: A Metadata Infrastructure for Placing Events in Temporal and Geographic Context (PDF)

Time Period Directory Display
User Guide for Time Period Directory Display: http://metadata.sims.berkeley.edu/tpd/TPD-userguide.html

Country Browse: http://ecai.org/imls2004/TimePeriodDirectory/tpd-countryQdisplay.asp
Map Browse: http://ecai.org/imls2004/timeperioddirectory/TPDwebmap/disk_TimePeriodCountry.html
Time Line Browse: http://ecai.org/imls2004/TimePeriodDirectory/tpdTimelinedisplay.asp

From Going Places in the Catalog project:
Notes on Library of Congress Subject Headings (LCSH) chronological subdivisions
Report: Application of Geographical Gazetteer Standards to Names Time Periods.