Edge Types

All edge types from all supported formats are mapped onto their closest XFN equivalent. Consult the XFN 1.1 documentation for details.

In summary, the XFN relation types are:

• Identity:
  • me: a claim that the referenced URL is yours
• Those that indicate a relation to another person:
  • contact
  • acquaintance
  • friend
  • met
  • co-worker
  • colleague
  • co-resident
  • neighbor
  • child
  • parent
  • sibling
  • spouse
  • kin
  • muse
  • crush
  • date
  • sweetheart

Other source of me links

Besides explicit XFN links, here are some of the other formats which generate a me edge:

• Fields in FOAF, such as:
  • weblog
  • homepage
  • openid
  • mbox_sha1sum, with the resulting internal target node of the format:

    sgn://mboxsha1/?ident=4caa1d6f6203d21705a00a7aca86203e82a9cf7a

• OpenID delegation <link> tags, both openid.delegate and openid2.local_id.
• FOAF declaration <link> tags. (i.e. if https://example.com/ has a <link> to https://example.com/my-foaf.rdf, then a me edge is created from https://example.com/ to https://example.com/my-foaf.rdf)
• mailto: queries. When querying on an email address, a directed edge of type me from mailto:foo@bar.com to sgn://mboxsha1/xxxxx... is temporarily assumed, but not stored.

Mapping FOAF's knows field

By default, any knows relation in a FOAF file is mapped to the XFN value of contact. However, in cases where a site publishes both XFN and FOAF, with a single XFN edge type, the FOAF knows mapping will be the site's XFN edge type used.

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