On Sat, Sep 3, 2011 at 3:06 PM, Dave Hau <[email protected]> wrote: > On 9/3/2011 12:48 PM, Phillip Rhodes wrote: >> Probably so. The book is from 2007/2008 or so, so it's not super current. >> Unfortunately w3.org seems to be down right this minute, so I can't even >> read the spec. Oh well, time to go do some shopping and get away >> from computers for a little while anyway! :-) > > I happen to have both editions of the book. The section you referred to in > 1st Ed i.e. "Special Purpose Inference" (which is right after the "Meaning > of Semantic Relations" section) is not in 2nd Ed anymore. In 2nd Ed, after > "Meaning of Semantic Relations", there is a new section on "SKOS and linked > vocabularies" that talks about the mapping relations, and then a new section > on "Concept Schemes". In fact, SKOS has its own individual chapter in 2nd Ed > instead of sharing a chapter with FOAF as in 1st Ed. Towards the end of the > chapter on SKOS in 2nd Ed, there is a section on "SKOS Integrity" that > specifically quotes the few integrity conditions mentioned by Dave, i.e. any > two things related by any semantic relation (broader, narrower, related) are > both members of the class skos:Concept.
OK, sounds like it is definitely time for me to go and get a copy of the 2nd edition then. Thanks for sharing that. :-) Cheers, Phil
