From DBWiki
Mapping Microformats to RDFa and Back Again
by Manu Sporny (this document was placed into the public domain on October 12th, 2007)
There are two major attempts at getting the semantic web into the hands of everyday bloggers and website operators as of late 2007: Microformats and RDFa. It is a common misconception that you must pick one over the other, or that one is "better" than the other. Each has it's strengths and weaknesses - rather than focus on those, let's assume that the world is a place filled with many different types of problems and both Microformats and RDFa can be used to solve those problems.
It is important to understand how structured data from these two approaches map to one another - after all, the underlying meaning of the data is the same, it is the mark-up that is slightly different. While syntax and vocabularies differ between the two approaches, the semantics remain the same.
The following page is a good resource if you're wondering how one format maps to another format. If you are not familiar with Microformats or RDFa, this is not the place to learn about it. It is assumed that you have already marked up some data using Microformats or RDFa.
This page will show you how to translate semantics from Microformats to RDF using RDFa. Keep in mind that these are not the only possible mappings. There are multiple RDF vocabularies, the most direct and popular ones are used for the mappings below.
hCard uF and vCard RDFa
| hCard Microformat
| vCard RDFa
| Comments
|
|
|
| The rdf:type should be set to http://www.w3.org/2001/vcard-rdf/3.0#
|
| fn
| FN
|
|
| n (family-name, given-name, additional-name, honorific-prefix, honorific-suffix)
| N (Family, Given, Other, Prefix, Suffix)
|
|
| nickname
| NICKNAME
|
|
| url
|
| This is typically the subject of the RDF triple. A property for this value is not needed in RDFa.
|
| email (type, value)
| EMAIL
| The type for RDFa is listed in the vCard:EMAILTYPES RDF class.
|
| tel (type, value)
| TEL
| The type for RDFa is listed in the vCard:TELTYPES RDF class.
|
| adr (post-office-box, extended-address, street-address, locality, region, postal-code, country-name, type, value)
| ADR (Pobox, Extadd, Street, Locality, Region, Pcode, Country)
| The type for RDFa is listed in the vCard:ADRTYPES RDF class.
|
| label
| LABEL
|
|
| geo (latitude, longitude)
| GEO
| latitude and longitude are not defined for vCard RDF.
|
| tz
| TZ
|
|
| photo
| PHOTO
|
|
| logo
| LOGO
|
|
| sound
| SOUND
|
|
| bday
| BDAY
|
|
| title
| TITLE
|
|
| role
| ROLE
|
|
| org (organization-name, organization-unit)
| ORG (Orgname, Orgunit)
|
|
| category
| CATEGORIES
|
|
| note
| NOTE
|
|
| class
| CLASS
|
|
| key
| KEY
|
|
| mailer
| MAILER
|
|
| uid
| UID
|
|
| rev
| REV
|
|
hAudio uF and hAudio RDFa
| Microformat
| RDFa
| Comment
|
| fn
| dc:title
| The RDF object is hmedia:Recording.
|
| album
| dc:title
| The RDF object is hmedia:Album.
|
| item
| hmedia:contains
| In RDFa, to specify that an album has a track, you use rel="hmedia:contains" from the subject (the album) and make the object the track URL.
|
| position
| hmedia:position
|
|
| contributor
| dc:creator (for primary creators), dc:contributor (for any secondary creator)
|
|
| published
| dc:date
|
|
| sample (rel)
| hmedia:sample
|
|
| enclosure (rel)
| hmedia:download
|
|
| payment (rel)
| commerce:payment
|
|
| photo
| hmedia:depiction
|
|
| category
| dc:type
|
|
| duration
| hmedia:duration
|
|
| price
| commerce:costs
|
|
| description
| dc:description
|
|
| NONE
| dc:license
| There is currently no way to specify the licensing information in hAudio uF.
|
hCalendar uF and vCal RDFa
| Microformat
| RDFa
| Comment
|
| vevent
| Vevent
| The RDF namespace is http://www.w3.org/2002/12/cal/ical#
|
| dtstart
| dtstart
|
|
| summary
| summary
|
|
| class
| class
|
|
| dtend
| dtend
|
|
| duration
| duration
|
|
| uid
| uid
|
|
| dtstamp
| dtstamp
|
|
| method
| method
|
|
| category
| category
|
|
| location
| location
|
|
| url
| url
|
|
| description
| description
|
|
| last-modified
| lastModified
|
|
| status
| status
|
|
| class
| class
|
|
| attendee
| attendee
|
|
| contact
| contact
|
|
| organizer
| organizer
|
|
TODO
We will map all of the current Draft and Specification Microformats in the following order:
- hAtom
- hReview
- hResume
- geo
- adr
- xFolk
- XFN
- VoteLinks
- XMDP
- XOXO
- rel-license
- rel-nofollow
- rel-tag
- rel-directory
- rel-enclosure
- rel-home
- rel-payment
- robots exclusion
