Difference between revisions of "Syndication"
| Line 1: | Line 1: | ||
| − | License statements may be included in various synication formats. | + | License statements may be included in various synication formats, generally at the feed and item level, where the latter overrides the former. |
== RSS 1.0 == | == RSS 1.0 == | ||
| Line 15: | Line 15: | ||
== Licensed Content Discovery == | == Licensed Content Discovery == | ||
| − | Not all feeds include license metadata. Heuristics for discovering licensed content. ( | + | Not all feeds include license metadata. Heuristics for discovering licensed content. Perhaps useful in particular for aggregators: |
| + | |||
| + | * IF feed item contains license reference or feed contains top level license reference | ||
| + | * THEN content in feed (including images and enclosures) probably licensed | ||
| + | * Crawl feed item URLs. | ||
| + | * IF license found for feed item URL (e.g., rel="license") | ||
| + | * THEN content at feed item URL probably licensed | ||
| + | * IF license metadata found specifically for media (e.g., about an image or video URL) | ||
| + | * THEN that media is probably licensed | ||
| + | * Download content referred to (e.g., in enclosure) | ||
| + | * IF content contains reference to metadata on the web that says content is licensed, content is probably licensed (see [[Embedded Metadata]] | ||
| + | |||
| + | This is obviously just a sketch. Aggregators may wish to use different heuristics for different feeds. See [[Content Curators]] for some sites with feeds of CC licensed content. | ||
[[Category:Developer]] | [[Category:Developer]] | ||
[[Category:Metadata]] | [[Category:Metadata]] | ||
{{stub}} | {{stub}} | ||
Revision as of 23:03, 10 March 2006
License statements may be included in various synication formats, generally at the feed and item level, where the latter overrides the former.
RSS 1.0
http://web.resource.org/rss/1.0/modules/cc/
RSS 2.0
http://backend.userland.com/creativeCommonsRssModule
Atom 1.0
http://ietfreport.isoc.org/idref/draft-snell-atompub-feed-license/
Licensed Content Discovery
Not all feeds include license metadata. Heuristics for discovering licensed content. Perhaps useful in particular for aggregators:
- IF feed item contains license reference or feed contains top level license reference
* THEN content in feed (including images and enclosures) probably licensed
- Crawl feed item URLs.
* IF license found for feed item URL (e.g., rel="license") * THEN content at feed item URL probably licensed * IF license metadata found specifically for media (e.g., about an image or video URL) * THEN that media is probably licensed
- Download content referred to (e.g., in enclosure)
* IF content contains reference to metadata on the web that says content is licensed, content is probably licensed (see Embedded Metadata
This is obviously just a sketch. Aggregators may wish to use different heuristics for different feeds. See Content Curators for some sites with feeds of CC licensed content.
This article is a stub. You can help the Creative Commons by expanding it.
