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DC-ARCHITECTURE  December 2014

DC-ARCHITECTURE December 2014

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Subject:

AW: AW: AW: [RDF AP] merge R-45 and R-142

From:

"Bosch, Thomas" <[log in to unmask]>

Reply-To:

DCMI Architecture Forum <[log in to unmask]>

Date:

Tue, 16 Dec 2014 15:32:45 +0000

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (143 lines)

exactly, I'm also wondering if there is no associated DC use case.

I recommend merging these requirements to R-45-LITERAL-RANGES


Cheers,
Thomas


Hi,

+1 for merging R-45 and R-142. They're not DC req indeed, but it's a cheap one to solve ;-)

About ranges, I agree they are not only about syntactic patterns. I.e if we get an age to be defined as "today.date()-my.dateBirth()" or just "8+5" it means something more than a syntactic check for whether a value matches the regex pattern "[0-9]|1[0-8]".

I reckon it won't work in most implementations, but it is theoretically feasible. Above all I hope it can relate to Karen's point about documentation: ranges can (and should, I believe!) be expressed as something that is not based on low-level checking of sequences of symbols.

With this in mind, I'm uncomfortable with the fact that it has not been identified as a DC requirement yet. Maybe a sign that we're missing something... anyway in the meantime we can still clean the requirement base to make it easier for us to look at non-DC requirement later!

Cheers,

Antoine

On 12/12/14 5:29 PM, Karen Coyle wrote:
> Thomas, So you are thinking that numeric ranges are a special case? I don't see that as a requirement so much as a question for the user interface that helps non-programmer developers create an application profile. The W3C work is definitely based around code, not a friendly interface, so something is going to be needed for people who don't code. Whether DCMI can provide that is another question.
>
> But I'm open to hearing from others how specific we should be here.
>
> kc
>
> On 12/11/14 11:24 AM, Bosch, Thomas wrote:
>> technically, I agree.
>> But, is that not too meta-level or let's say generic?
>>
>> I, as a constraint designer, have the need to define that young persons must have an age between 0 and 18.
>> Then, I ask which constraint I have to define for this purpose.
>>
>> Do I know that I can use patterns / regex to express that?
>>
>> I think the requirement should be that literal ranges should be defined.
>> So, when I need such a constraint I see directly that I can use this constraint to express that.
>>
>> And you can use regex for many many purposes.
>> But you have to know for which purposes.
>>
>>
>> Thomas
>>
>>
>> We have a general requirement for validating values using a pattern
>> (presumably regex, but we don't need to be that specific). Wouldn't that
>> be enough? If you have a property like "personHeight" you could set a
>> pattern (not less than x or more than y).
>>
>> kc
>>
>> On 12/11/14 9:09 AM, Bosch, Thomas wrote:
>>> Thank you Karen for clarifying this.
>>>
>>> I'm wondering if there are some DC use cases related to this.
>>>
>>> Examples would be:
>>>
>>> - the height of a person must (not) be within some range
>>> - the latitude of a spatial feature is (not) within [-90,90]
>>> - the position / number of a footbal player must be between 1 and 23
>>>
>>> I keep these as separate requirements.
>>>
>>>
>>> Cheers,
>>> Thomas
>>>
>>>
>>> Neither of those is on the DC requirements list. I think that DC needs a
>>> single requirement, and our notes say:
>>>
>>> ACTION: Thomas Drop 141; use 44; link UC-EUROPEANA-16 to R-44. Remove
>>> the last two bullets from R-44
>>>
>>> So I don't think it matters in the DC requirements list what you do with
>>> 45 and 142.
>>>
>>> kc
>>>
>>> On 12/11/14 8:10 AM, Bosch, Thomas wrote:
>>>> Hi,
>>>>
>>>> we have spoken about these 2 requirements, but I did not find them in
>>>> our etherpad discussions.
>>>>
>>>> I think I can merge them?
>>>>
>>>> R-45-RANGES-OF-RDF-LITERAL-VALUES
>>>> R-142-NEGATIVE-RANGES-OF-RDF-LITERAL-VALUES
>>>>
>>>> my recommendation: 'Literal Ranges'
>>>>
>>>> When we have agreement I can do the merging.
>>>>
>>>>
>>>> Thanks,
>>>> Thomas
>>>>
>>>> --
>>>>
>>>> Thomas Bosch, M.Sc. (TUM)
>>>>
>>>> PhD Student
>>>>
>>>> GESIS - Leibniz Institute for the Social Sciences
>>>>
>>>> Social Science Metadata Standards
>>>>
>>>> Visitors Address: B2,1, D-68159 Mannheim
>>>>
>>>> Postal Address: P.O.Box 12 21 55, D-68072 Mannheim
>>>>
>>>> Tel: + 49 (0) 621 / 1246-271
>>>>
>>>> Fax: + 49 (0) 621 / 1246-100
>>>>
>>>> Web: http://www.gesis.org
>>>>
>>>> Website: http://boschthomas.blogspot.com/
>>>> GitHub: _https://github.com/boschthomas/PhD_
>>>>
>>>
>>> --
>>> Karen Coyle
>>> [log in to unmask] http://kcoyle.net
>>> m: 1-510-435-8234
>>> skype: kcoylenet/+1-510-984-3600
>>>
>>
>> --
>> Karen Coyle
>> [log in to unmask] http://kcoyle.net
>> m: 1-510-435-8234
>> skype: kcoylenet/+1-510-984-3600
>>
>

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