[Go-essp-tech] replicas and search

[stephen.pascoe at stfc.ac.uk]

Hi Luca,

I've taken a look at the ontology in Protégé.  I see there is an esg:Dataset class with some interesting properties:

esg:hasUri
esg:hasUUID
esg:hasDataArchive
esg:hasDataService

How are these used in ESG?  Do any of them map onto THREDDS URLs of individual datasets?
Maybe we could have a property esg:containsFileWithTrackingId?

Cheers,
Stephen.


---
Stephen Pascoe  +44 (0)1235 445980
British Atmospheric Data Centre
Rutherford Appleton Laboratory

-----Original Message-----
From: go-essp-tech-bounces at ucar.edu [mailto:go-essp-tech-bounces at ucar.edu] On Behalf Of Luca Cinquini
Sent: 03 December 2009 00:59
To: Lawrence, Bryan (STFC,RAL,SSTD)
Cc: go-essp-tech at ucar.edu
Subject: Re: [Go-essp-tech] replicas and search

Hi Bryan:

On Dec 2, 2009, at 10:20 AM, Bryan Lawrence wrote:

> On Wednesday 02 December 2009 16:47:02 Don Middleton wrote:
>> A follow-on to the call, as I had to leave a bit early. We were 
>> discussing being able to use the tracking id for various files. If 
>> the tracking id is not in the federated metadata, how does one know 
>> which gateway to consult for information?
>
> I was wondering the same thing ...
>
> I think I've asked this question before, but I can't remember the 
> answer :-)
>
> Is the difference between what is in the Thredds catalog and what is 
> in the rdf representation of it documented anywhere?  (Or, where is 
> the schema for the rdf?)

The schema for the RDF is the owl file itself:

http://ontologies.ucar.edu/owl/esg.owl

or if you want to look at all the ontologies in the package:

http://ontologies.ucar.edu/owl/esg_all.owl

Luca

>
> Cheers
> Bryan
>
>>
>> don
>>
>>
>> On Dec 1, 2009, at 2:30 PM, Luca Cinquini wrote:
>>
>>> Hi,
>>> 	as I mentioned today at the telecon, I think the RDF query services 
>>> should be able to handle the concept of dataset replicas quite 
>>> nicely. The main concepts are that the RDF records generated from 
>>> replicas must have different RDF identifiers, so they can be 
>>> exchanged independently among gateways, and must reference their 
>>> original RDF record.
>>>
>>> If you are interested, I've documented some of the details here:
>>>
>>> https://wiki.ucar.edu/display/esgcet/Metadata+Search+and+Replicas
>>>
>>> I'm also including a snapshot of an ESG Gateway that shows multiple 
>>> replicas returned as part of a DRS search (note that how the 
>>> replicas are presented in the result page can be easily changed - 
>>> the picture is just to show that the query can handle replicas).
>>>
>>> thanks, Luca
>>>
>>> <DRS with Replicas.tiff>
>>> _______________________________________________
>>> GO-ESSP-TECH mailing list
>>> GO-ESSP-TECH at ucar.edu
>>> http://mailman.ucar.edu/mailman/listinfo/go-essp-tech
>>
>> _______________________________________________
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>>
>
>
>
> --
> Bryan Lawrence
> Director of Environmental Archival and Associated Research 
> (NCAS/British Atmospheric Data Centre and NCEO/NERC NEODC) STFC, 
> Rutherford Appleton Laboratory Phone +44 1235 445012; Fax ... 5848;
> Web: home.badc.rl.ac.uk/lawrence

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