What is historical-data.org?
This site defines a collection of schemas (applied in the form of HTML tags) that webmasters can use to markup their historical and genealogical information in a consistent way.
Many sites are generated from structured data, which is often stored in databases. When this data is formatted into HTML, it becomes very difficult to recover the original structured data. Many applications, especially search engines, can benefit greatly from direct access to this structured data. On-page markup enables search engines to understand the information on web pages and provide richer search results in order to make it easier for users to find relevant information on the web. Markup can also enable new tools and applications that make use of the structure.
The scope of this project is limited to defining the schemas for historical and genealogical microdata that is designed primarily to enable search engines, web crawlers, browsers, and other tools for enabling users to find and understand the historical data contained on an HTML page. As such, the schemas defined by this project are designed to be lightweight and generic and are not designed to support all of the intricacies of a rich research model that supports in-depth semantic analysis and sophisticated bibliographic accountability.
Schema.org, Microformats, and Microdata all rely on the ISO 8601 date format, which does not support approximate dates. Review the Library of Congress's Extended Date and Time Format, which extends ISO 8601 and allows uncertain and approximate dates.
Updates (via our blog)
Stay tuned for updates to the schema and other announcements by subscribing to our blog: historical-data-schema.blogspot.com
Last updated: Mon Jun 11 17:23:47 -0700 2012