Re: RDFa, multiple languages, multiple documents, one subject

Perfect - now when I fixed both lang -> hreflang and alternative ->
alternate it works (I did follow the link when I was surprised to see
"alternative", but my eyes deceived me and I saw it there too ;))

http://www.w3.org/2007/08/pyRdfa/extract?uri=http%3A%2F%2Fwww.sergeychernyshev.com%2Fprofile%2F%3F

There is still the question of whatever it makes sense to put both
rel="alternate" and rdfs:seeAlso... in this tool, actually (contrary to
Wikipedia example I gave) it's probably worth dropping this additional
rdfs:seeAlso as it provides only translations (if they exist).

Steven, Simone, thanks a lot for your help with it! I hope all RDFa clients
will use the full set of specs for discovery.

          Sergey


On Thu, Sep 18, 2008 at 11:04 AM, Steven Pemberton
<steven.pemberton@cwi.nl>wrote:

> On Thu, 18 Sep 2008 16:56:51 +0200, Sergey Chernyshev <rdfa.info@
> antispam.sergeychernyshev.com> wrote:
>
>  On Thu, Sep 18, 2008 at 10:42 AM, Steven Pemberton
>> <steven.pemberton@cwi.nl>wrote:
>>
>>  On Thu, 18 Sep 2008 16:21:42 +0200, Sergey Chernyshev <rdfa.info@
>>> antispam.sergeychernyshev.com> wrote:
>>>
>>>  Great! I didn't know that. I wonder if RDFa clients are interpreting it
>>>
>>>> appropriately?
>>>>
>>>>
>>> What could they do wrong?
>>>
>>
>>
>> They can ignore it ;)
>>
>> I made the change, but official RDFa parser didn't pick up this official
>> syntax:
>>
>> http://www.w3.org/2007/08/pyRdfa/extract?uri=http%3A%2F%2Fwww.sergeychernyshev.com%2Fprofile%2F%3F
>>
>
> Oops, sorry, my mistake, I mistyped. If you follow the link you will see it
> is rel="alternate" not rel="alternative"
>
> Steven
>
>
>
>> I'll leave both for now - maybe I'll try having HTML links in the head as
>> <link rel="alternative" lang="ru" href="./?lang=ru"/> instead of <a> tags
>> in
>> the body.
>>
>>
>>  to have have both rel="alternative" and rel="rdfs:seeAlso".
>>>
>>>>
>>>>  BTW, it's an example when duplication of code is necessary - same links
>>> need
>>>
>>> I was going to suggest using owl:sameas (
>>> http://www.w3.org/TR/owl-ref/#sameAs-def) between xhtmlvocab:alternative
>>> and rdfs:seeAlso but then I see:
>>>
>>> "The property rdfs:seeAlso specifies a resource that might provide
>>> additional information about the subject resource."
>>> http://www.w3.org/TR/2000/CR-rdf-schema-20000327/#s2.3.4
>>>
>>> I think this is different to a page that supplies the equivalent page in
>>> a
>>> different language. It is not additional information, but the same
>>> information in a different language. So I think rel="alternative" really
>>> is
>>> the correct relation, and rdfs:seeAlso would be misleading.
>>>
>>
>>
>> Not really - document in another language doesn't mean that it's exactly
>> the
>> same data - compare the length of these two pages:
>>
>>   - http://en.wikipedia.org/wiki/Resource_Description_Framework
>>   - http://ru.wikipedia.org/wiki/Resource_Description_Framework
>>
>> So I think both "alternative document in another language" and "document
>> with additional information in another language" are applicable in this
>> scenario.
>>
>> In any case making owl:sameas between xhtmlvocab:alternative and
>> rdfs:seeAlso is not a good thing as it'll merge too much stuff together.
>>
>> Best wishes,
>>
>>>
>>> Steven
>>>
>>>
>>>            Sergey
>>>
>>>>
>>>>
>>>> On Thu, Sep 18, 2008 at 8:59 AM, Steven Pemberton
>>>> <steven.pemberton@cwi.nl>wrote:
>>>>
>>>>  Helly Sergey,
>>>>
>>>>>
>>>>> On Mon, 15 Sep 2008 23:46:22 +0200, Sergey Chernyshev <rdfa.info@
>>>>> antispam.sergeychernyshev.com> wrote:
>>>>>
>>>>>  One of the goals of the project is to make it easy to create profiles
>>>>> with
>>>>>
>>>>>  lables and stuff in multiple languages, another goal is to have RDFa
>>>>>> support
>>>>>> for it. I approached this by creating pages for each language
>>>>>> (substituted
>>>>>> with values in default language if language-specific labels are not
>>>>>> defined)
>>>>>> and interlinked them with rdfs:seeAlso links so english page, for
>>>>>> example
>>>>>> has
>>>>>>
>>>>>>  <a rel="rdfs:seeAlso" href="?lang=ru">ru</a>
>>>>>>
>>>>>> if russian version also exists.
>>>>>>
>>>>>>
>>>>>>  Actually HTML and XHTML already have a notation for this:
>>>>>
>>>>>      <a rel="alternative" href="?lang=ru" hreflang="ru">ru</a>
>>>>>
>>>>> http://www.w3.org/TR/html401/types.html#type-links
>>>>>
>>>>> So while your version may well be OK, that is the official way to do
>>>>> it.
>>>>>
>>>>> Best wishes,
>>>>>
>>>>> Steven Pemberton
>>>>>
>>>>
>>>>
>>>>
>
>


-- 
Sergey Chernyshev
http://www.sergeychernyshev.com/