Multi-word tagging

I intend to tag a number of pages with the title of the
magazine from
which their content is sourced; "British Birds".

Are there any documented standards for two (or more) words
in tags?

I note that Technorati treats:

        google-search
and
        google+search

and synonymous.

It also treats:

        google_search
and
        googlesearch

as synonymous, but different from my first two examples. (I
would have
expected my first three examples, but not the latter, to be
considered
equivalent.)


Some time ago, I documented a number of popular websites'
formats for
two-word URLs, at:

        <http:
//microformats.org/wiki/rel-tag-spaces>

but that's not to say that those patterns are necessarily
used by those
sites, or preferred by others, for tags.

-- 
Andy Mabbett
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On Sat, 2007-12-29 at 23:45 +0000, Andy Mabbett wrote:
> google+search

This is the best approach I think if you are building a url
"+" is just
a space, tags I always thought were just single descriptive
words and a
link to the meaning or reference (just my thought)

;)

Martin 

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In message <1198980572.8054.184.camellocalhost.localdomain>, Martin 
McEvoy <martinweborganics.co.uk> writes

>On Sat, 2007-12-29 at 23:45 +0000, Andy Mabbett wrote:
>> google+search
>
>This is the best approach I think

Thank you for taking the time to reply, but, while opinions
are 
interesting, I was looking for something more definitive.

 >if you are building a url "+" is just a
space,

Is it? What about /rock+roll ? Would you use /rock+++roll ?

>tags I always thought were just single descriptive words
and a
>link to the meaning or reference (just my thought)

I've never seen anything which says that tags can only be
single words.

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On Sun, 2007-12-30 at 11:36 +0000, Andy Mabbett wrote:
> In message <1198980572.8054.184.camellocalhost.localdomain>, Martin 
> McEvoy <martinweborganics.co.uk> writes
> 
> >On Sat, 2007-12-29 at 23:45 +0000, Andy Mabbett
wrote:
> >> google+search
> >
> >This is the best approach I think
> 
> Thank you for taking the time to reply, but, while
opinions are 
> interesting, I was looking for something more
definitive.
> 
>  >if you are building a url "+" is just a
space,
> 
> Is it? What about /rock+roll ? Would you use
/rock+++roll ?
Ha, ha well done andy no you are probably right!
> 
> >tags I always thought were just single descriptive
words and a
> >link to the meaning or reference (just my thought)
> 
> I've never seen anything which says that tags can only
be single words.
> 
No Neither Have I Just what i can gather:
http://www.adammathes.com/ac
ademic/computer-mediated-communication/folksonomies.html

http://www.flickr.
com/photos/tags/
     1. http://www.methttp://www.snagging.org/tag/Hom
es_from_Hell.htmlhttp://www.snagging.org/tag/Homes_from_Hell
.htmlafilter.com/tags/
http://free
sound.iua.upf.edu/tagsView.php
http://www.amazon.com/gp/tagging/cloud?
ie=UTF8&returnTo=history%20of%
20science
http://11870.com/tags
http://del.icio.us/popula
r/

these ones are different however
http://wwwhttp://w
ww.snagging.org/
Multiple words are spaced using "_"
http
://www.snagging.org/tag/Homes_from_Hell.html

and technorati 
http:/
/www.technorati.com/tag/data+portability
Multiple words are spaced using "+"

also three of the biggest tag-spaces ie:
http://www.flickr.com/search/?q=Data%20Po
rtability&w=all&m=tags
http:/
/www.technorati.com/tag/data+portability
http://del.icio.us/search/?fr=del_i
cio_us&p=data+portability&type=all

build their search query in different ways so I guess it
depends?

Maybe a standardised search for tag-spaces?

I dont know Andy what do you think?


Martin


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On 30 Dec 2007, at 02:09, Martin McEvoy wrote:

> On Sat, 2007-12-29 at 23:45 +0000, Andy Mabbett wrote:
>> google+search
>
> This is the best approach I think if you are building a
url "+" is  
> just
> a space, tags I always thought were just single
descriptive words  
> and a
> link to the meaning or reference (just my thought)
>
> ;)
>
> Martin
>
I think this has come up before. Delicious uses + to add
terms to a  
search via the 'related tags' links on a page.
eg. http://d
el.icio.us/eatyourgreens/video+music - links tagged with
 
the separate tags 'video' and 'music'

So + can indicate a space, but doesn't always. Which means
you can't  
necessarily relate a tag on Wikipedia, say, to a tag on
flickr or  
delicious. For real fun with tag spaces, have a look at this
URL,  
which relates four individual tags (I think) to provide some
context  
to the search 
http://www.flickr.com/photos/tags/woolwich/clusters/ 
bond-thames-uk/

I think the answer to the original question is - there is no
standard  
for encoding spaces in tags, so pick the scheme that works
best for  
you. %20 or underscores seem pretty unambiguous to me.

Jim

Jim O'Donnell
jimeatyourgreens.org.uk
http://eatyourgreens.org.
uk
http://flickr.
com/photos/eatyourgreens



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sorry all for my malformed email, my 2 year old was sat on
my knee
partway through my message,;)

oh well ignore if you like!

Martin
On Sun, 2007-12-30 at 12:55 +0000, Martin McEvoy wrote:
> On Sun, 2007-12-30 at 11:36 +0000, Andy Mabbett wrote:
> > In message <1198980572.8054.184.camellocalhost.localdomain>, Martin 
> > McEvoy <martinweborganics.co.uk>
writes
> > 
> > >On Sat, 2007-12-29 at 23:45 +0000, Andy
Mabbett wrote:
> > >> google+search
> > >
> > >This is the best approach I think
> > 
> > Thank you for taking the time to reply, but, while
opinions are 
> > interesting, I was looking for something more
definitive.
> > 
> >  >if you are building a url "+" is
just a space,
> > 
> > Is it? What about /rock+roll ? Would you use
/rock+++roll ?
> Ha, ha well done andy no you are probably right!
> > 
> > >tags I always thought were just single
descriptive words and a
> > >link to the meaning or reference (just my
thought)
> > 
> > I've never seen anything which says that tags can
only be single words.
> > 
> No Neither Have I Just what i can gather:
> http://www.adammathes.com/ac
ademic/computer-mediated-communication/folksonomies.html

> http://www.flickr.
com/photos/tags/
>      1. http://www.methttp://www.snagging.org/tag/Hom
es_from_Hell.htmlhttp://www.snagging.org/tag/Homes_from_Hell
.htmlafilter.com/tags/
> http://free
sound.iua.upf.edu/tagsView.php
> http://www.amazon.com/gp/tagging/cloud?
ie=UTF8&returnTo=history%20of%
> 20science
> http://11870.com/tags
> http://del.icio.us/popula
r/
> 
> these ones are different however
> http://wwwhttp://w
ww.snagging.org/
> Multiple words are spaced using "_"
> http
://www.snagging.org/tag/Homes_from_Hell.html
> 
> and technorati 
> http:/
/www.technorati.com/tag/data+portability
> Multiple words are spaced using "+"
> 
> also three of the biggest tag-spaces ie:
> http://www.flickr.com/search/?q=Data%20Po
rtability&w=all&m=tags
> http:/
/www.technorati.com/tag/data+portability
> http://del.icio.us/search/?fr=del_i
cio_us&p=data+portability&type=all
> 
> build their search query in different ways so I guess
it depends?
> 
> Maybe a standardised search for tag-spaces?
> 
> I dont know Andy what do you think?
> 
> 
> Martin
> 

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On Sun, Dec 30, 2007 at 11:36:51AM +0000, Andy Mabbett
wrote:

> >if you are building a url "+" is just a
space,
> Is it? What about /rock+roll ? Would you use
/rock+++roll ?

I'd probably use /rock%20%26%20roll ("rock &
roll"), but perhaps
that's just me. If I genuinely wanted 'rock+roll' as my tag,
I'd use
/rock%2broll.

Note that '+' is not reserved in path components in URIs,
and
additionally only decodes to octet 0x20 (space) in
application/x-www-form-urlencoded, so you can write an
intended '+'
(plus sign) differently in a path component and a query
component. Some examples follow:

Tag = "rock & roll"
-------------------

http://exam
ple.com/tags/rock%20%26%20roll
http://exam
ple.com/find?tag=rock+%26+roll
http://
example.com/find?tag=rock%20%26%20roll

Tag = "rock+roll"
-----------------

http://example.com/
tags/rock+roll
http://exampl
e.com/find?tag=rock%2broll

See RFC 2396 for the (slightly involved) rules for URIs, and
the HTML4
spec for application/x-www-form-urlencoded.

Of course, this doesn't mean that an endpoint can't
*interpret* a '+'
in a path component however it likes; could be to mean a
plus, could
be to mean a space, could be to separate multiple tags,
could be to
indicate the presence of aliens.

James

-- 
/-----------------------------------------------------------
---------------
  James Aylett                                              
   xapian.org
  jamestartarus.org                              
uncertaintydivision.org
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In message <6FBF86C2-23EE-4C11-A5A1-3E7CAC96E578eatyourgreens.org.uk>, 
Jim O'Donnell <jimeatyourgreens.org.uk> writes

>+ can indicate a space, but doesn't always. Which means
you can't 
>necessarily relate a tag on Wikipedia, say, to a tag on
flickr or 
>delicious.

Which is a pity. I suppose that horse has bolted, though.
:-(

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