W3C home > Mailing lists > Public > public-ddwg@w3.org > March 2007

RE: Device Description definition

From: Jo Rabin <jrabin@mtld.mobi>
Date: Thu, 1 Mar 2007 07:34:45 -0500
Message-ID: <815E07C915F39742A29E5587B3A7FA1929892604@lk0-cs0.int.link2exchange.com>
To: <public-ddwg@w3.org>

I am running along behind on this ... trying to keep up, forgive me:

Commenting on: "Device Description - A set of attributes which
characterizes that part of the delivery context directly related to the
hardware and software of a device. These attributes adhere to the
Delivery Context Ontology."

I thought a device, as defined by DI, is hardware and software?
Specifically it includes the user agent. So what point are we making by
saying 'related to the hardware and software of a device' that is
different to saying 'relating to a device'?

A further confusion, on my part, is that when we say 'a device' we don't
mean 'a specific device', because as discussed (accidentally on the
other list, I think) the exact values for the properties of a specific
device at a point in time is the territory of some other group. So do we
in fact mean 'devices' or better still 'classes of devices' or perhaps
better even than that 'type of device'?

My next confusion is - is it the attributes that characterise the type
of device, or is it the attributes and their possible values that
characterise the type of device?

And as a possibly rather pedantic kicker, when we say 'set', do we mean
that the same set is chosen for all device classes or do we mean, more
loosely, that it is a collection of attributes - some of which may be
present for some descriptions but not others?

So if I am heading down a track that is comprehensible to anybody, do we
mean:

Device Description - a collection of attributes chosen from the Delivery
Context ontology, together with the values for those attributes that
characterise a type of device.

Thanks
Jo


> -----Original Message-----
> From: public-ddwg-request@w3.org [mailto:public-ddwg-request@w3.org]
On
> Behalf Of Rhys Lewis
> Sent: 01 March 2007 12:08
> To: Rotan Hanrahan; Smith, Kevin, VF-Group; public-ddwg@w3.org
> Subject: RE: Device Description definition
> 
> 
> Hello everyone,
> 
> I think we are making progress!
> 
> One comment is that 'they' are not attribute/value pairs. T think we
> should simply refer to 'them' as attributes, which is the term from
the
> delivery context definition.
> 
> Also, I think we should use the term ontology rather than vocabulary.
We
> probably should also define a term like Delivery Context Ontology
(I'll
> volunteer to suggest a definition) and then refer to that from the
> definition for device description.
> 
> That would lead to something like:
> 
> Device Description - A set of attributes which characterizes that part
of
> the delivery context directly related to the hardware and software of
a
> device. These attributes adhere to the Delivery Context Ontology.
> 
> I tweaked the wording to match that from the delivery context
definition.
> 
> 
> Best wishes
> Rhys
> 
> -----Original Message-----
> From: public-ddwg-request@w3.org [mailto:public-ddwg-request@w3.org]
On
> Behalf Of Rotan Hanrahan
> Sent: 01 March 2007 11:19
> To: Smith, Kevin, VF-Group; public-ddwg@w3.org
> Subject: RE: Device Description definition
> 
> 
> I like this definition. Good body, delicate nose, hint of oak...
> 
> We should view this proposal in the context of the DI Glossary [1].
The
> important terms there are Device and Delivery Context. It seems to me
that
> the "mash-up" fits well with these existing definitions.
> 
> ---Rotan.
> 
> [1] http://www.w3.org/TR/di-gloss/
> 
> 
> 
> -----Original Message-----
> From: public-ddwg-request@w3.org [mailto:public-ddwg-request@w3.org]
On
> Behalf Of Smith, Kevin, VF-Group
> Sent: 01 March 2007 11:14
> To: public-ddwg@w3.org
> Subject: RE: Device Description definition
> 
> 
> How about a mash-up? Definition 2.0, as it were:
> 
> Device description - a collection of attribute-value pairs, adhering
to a
> known vocabulary, that apply to each member of a set of devices and
> describe the specific part of the delivery context directly related to
the
> hardware and software of the device.
> 
> Kevin
> 
> 
> 
> 
> -----Original Message-----
> From: Rotan Hanrahan [mailto:rotan.hanrahan@mobileaware.com]
> Sent: 01 March 2007 11:09
> To: Smith, Kevin, VF-Group; public-ddwg@w3.org
> Subject: RE: Device Description definition
> 
> The most recent one that I posted to the public list was actually:
> 
> Device description - a collection of attribute-value pairs, adhering
to a
> known vocabulary, that apply to each member of a set of devices.
> 
> This incorporates the point made my Rhys regarding ontology
(vocabulary)
> though does not specifically mention Delivery Context, which I think
might
> be a good idea. Suggestions anyone?
> 
> ---Rotan.
> 
> 
> 
> -----Original Message-----
> From: public-ddwg-request@w3.org [mailto:public-ddwg-request@w3.org]
On
> Behalf Of Smith, Kevin, VF-Group
> Sent: 01 March 2007 11:05
> To: public-ddwg@w3.org
> Subject: RE: Device Description definition
> 
> 
> Hi everyone,
> 
> So (I think) the latest proposal for the definition was from Rhys,
> namely:
> 
> Device description: describing that specific part of the delivery
context
> directly related to the hardware and software of the device.
> 
> ...where delivery context is defined as "A set of attributes that
> characterizes the capabilities of the access mechanism, the
preferences of
> the user and other aspects of the context into which a web page is to
be
> delivered." This (to me) covers Jo's point about current and possible
> values.
> 
> Alternatively we have Rotan's defintion:
> 
> Device description - a collection of attribute-value pairs that apply
to
> each member of a set of devices.
> 
> Are there any further comments on either? I personally think both are
> correct, but that it makes sense to associate the definition with the
> delivery context as per Rhys' wording.
> 
> Cheers,
> Kevin
> 
> 
> 
> 
> 
Received on Thursday, 1 March 2007 12:35:07 UTC

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