breadcrumbs-formats: Difference between revisions
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* more recent work around RDF has focussed on describing hierarchies of topics using the [http://en.wikipedia.org/wiki/Simple_Knowledge_Organization_System SKOS vocabulary]; this has gained significant traction in the library community, and many thesauri are shared using SKOS. However it is not widely used to annotate in-page topic hierarchies. See [http://ckan.net/tag/format-skos CKAN list of datasets using SKOS]. | * more recent work around RDF has focussed on describing hierarchies of topics using the [http://en.wikipedia.org/wiki/Simple_Knowledge_Organization_System SKOS vocabulary]; this has gained significant traction in the library community, and many thesauri are shared using SKOS. However it is not widely used to annotate in-page topic hierarchies. See [http://ckan.net/tag/format-skos CKAN list of datasets using SKOS]. | ||
* Google Rich Snippets [http://www.google.com/support/webmasters/bin/answer.py?answer=185417 have a 'breadcrumbs' construct], as does its [http://schema.org/WebPage|schema.org successor] | * Google Rich Snippets [http://www.google.com/support/webmasters/bin/answer.py?answer=185417 have a 'breadcrumbs' construct], as does its [http://schema.org/WebPage|schema.org successor] | ||
* schema.org [http://schema.org/WebPage WebPage] specifies <code>breadcrumb</code> as 'Text A set of links that can help a user understand and navigate a website hierarchy.' Which is an odd way to specify links. | |||
== related == | == related == | ||
Revision as of 17:26, 21 September 2011
This article is a stub. You can help the microformats.org wiki by expanding it.
This page is a collection of research regarding previous breadcrumbs formats towards the development of a breadcrumbs vocabulary and microformat per the process.
Bing breadcrumbs
Bing breadcrumbs format: http://onlinehelp.microsoft.com/en-us/bing/hh207240.aspx
add more formats
This strays more into sitemaps and topic description; related themes...
- Late-90s Mozilla/Netscape browser had built-in understanding of a sitemaps format expressed in RDF. Technical details are likely buried in Mozilla CVS; some press releases still survive. The vocabulary encoded a sitemap as a graph structure, using a 'child' property to represent hierarchy, as in other areas of Mozilla (e.g. see Mozilla docs, mail/news).
- Mozilla's RDF sitemaps were preceded by Meta Content Format (MCF) sitemaps (Netscape took MCF from Apple ~1997). MCF sitemaps described a site hierarchy using a network of linked text files that summarised the site structure. MCF was an ancestor of both RSS and RDF.
- ILRT / University of Bristol had a server-based implementation of the same format (now code-rotted), and experiments with alternatives that instead used more HTML concepts: see 1999 draft spec
- more recent work around RDF has focussed on describing hierarchies of topics using the SKOS vocabulary; this has gained significant traction in the library community, and many thesauri are shared using SKOS. However it is not widely used to annotate in-page topic hierarchies. See CKAN list of datasets using SKOS.
- Google Rich Snippets have a 'breadcrumbs' construct, as does its successor
- schema.org WebPage specifies
breadcrumbas 'Text A set of links that can help a user understand and navigate a website hierarchy.' Which is an odd way to specify links.