metadata

Metadata is data about data, and a concept too abstract to be useful since in practice it is used to mean so many different things that it is ill-suited for communicating any specific concept, often unnecessary (often just means data), and when used to indicate data about content but apart from content, is often out of date or otherwise wrong or untrustworthy.

Good Examples
Despite the problems with "metadata" as a concept and in use, there are a small handful of mostly effective examples:
 * EXIF
 * ID3

Clean up
The rest of the page needs major cleanup

Issues
tantek: danlyke, kylewm I think the framing of "metadata" leads people down a        confusing and unhelpful path.
 * This page/content should be moved somewhere with less confusing framing

http://indiewebcamp.com/irc/2014-09-25#t1411664218431

Discussion
kylewm: is there any sort of comparison that explains the relationship between mf, microdata, schema.org, AS1/2, JSON-LD, RDFa, turtle, n3, etc.? I have a lot of trouble understanding e.g., which things are syntax and which are vocabularies and which are the same or successors to each other [09:36] tommorris: kylewm: schema.org is a vocabulary. microformats used to be syntax+vocab, now those have been separated in mf2. JSON-LD is a layer of RDFing translation on top of JSON (think of it like an 'RDF stylesheet'!) tommorris: kylewm: Notation3 is an RDF syntax that's human readable. RDFa is RDF in HTML. tommorris: kylewm: microdata is Hixie's reimplementation of RDFa's use cases but without RDFa's RDFisms. tommorris: kylewm: turtle and N3 are so similar you can just treat them as one. there are a few minor differences but just treat N3 as a superset of Turtle tommorris: kylewm: ActivityStreams 1 is based on Atom. AS2 is based on JSON (and/or JSON-LD and/or a few other things to be determined) http://indiewebcamp.com/irc/2014-09-25#t1411662943343