[esip-semanticweb] Mapping between CLEAN and SWEET or GCMD

Tue Apr 2 09:32:23 EDT 2013

Hi John, we discussed the open access of GCMD keywords with the GCMD KMS
group some time ago. So far, the GCMD keyword service is provided in two
ways (GCMD group members on this email list may offer latest updates). 

One is static, as the link pasted in your email. And as you mentioned if one
goes to the upper-level directory of that path s/he can find .rdf format and
also vocabularies of other topics.

The other is RESTful, which is functional as each term has an unique ID and
content negotiation can be conducted, but one needs to register an user name
to access this service. See below an email from the GCMD KMS group w.r.t.
that.

In our mapping works we downloaded the rdf of the science keywords (this is
one of the topics in GCMD) and tested mapping algorithms on our local
server.  

**********************

GCMD group offer keywords as RDF and Excel through our Keyword Management
Service (KMS).  Please use the EOSDIS User Registration System (URS) at
https://urs.eosdis.nasa.gov/ to create a user account to access the KMS. 

Documentation for the KMS is available at
http://gcmd.gsfc.nasa.gov/Connect/docs/kms/KeywordManagementServiceAPI.pdf 

A sample KMS URL is:
http://gcmdservices.gsfc.nasa.gov/kms/concept/2e5a401b-1507-4f57-82b8-36557c
13b154

a brief list (like metadata)

http://gcmdservices.gsfc.nasa.gov/kms/concepts/concept_scheme/sciencekeyword
s

An Excel/CSV format is available at
http://gcmdservices.gsfc.nasa.gov/kms/concepts/concept_scheme/sciencekeyword
s?format=csv

RDF format

http://gcmdservices.gsfc.nasa.gov/kms/concepts/concept_scheme/sciencekeyword
s?format=rdf

Please use the following citation if you publish using the keywords:

Olsen, L.M., G. Major, K. Shein, J. Scialdone, R. Vogel, S.Leicester, H.
Weir, S. Ritz, T. Stevens, M. Meaux, C.Solomon, R. Bilodeau, M. Holland, T.
Northcutt, R. A. Restrepo, 2007.  NASA/Global Change Master Directory (GCMD)
Earth Science Keywords. Version 6.0.0.0.0

***********************

Best,

--Marshall

From: John Graybeal [mailto:jgraybeal at ucsd.edu] 
Sent: Tuesday, April 02, 2013 05:26
To: Beth Huffer
Cc: Marshall X Ma; steve.richard at azgs.az.gov; esip-semanticweb at rtpnet.org
Subject: Re: [esip-semanticweb] Mapping between CLEAN and SWEET or GCMD

For those of you doing GCMD mappings: Where are you representing the GCMD
terms, in an internal ontology, or an externally visible one?  Are you
creating your own ontology of GCMD terms or using GCMD's resource?  

Perhaps we could settle on a common set of public URIs for GCMD terms. GCMD
is publishing OWL for parameters at this point
(http://gcmdservices.gsfc.nasa.gov/static/kms/sciencekeywords/sciencekeyword
s.owl, Yay!), but in that form it doesn't appear useful, as all it has are
unique 'terms' (IDs) with no prefLabels or mappings. Maybe I'm missing
something ...  The rdf file alongside it has mappings and looks like SKOS.
I'll try to contact someone from GCMD to ask about these directories, unless
members on this list have experience with it already, or are on that
team....

And Beth, this may be better as an offline discussion, but I seek
clarification on the sentence "The terms will denote objects and/or classes
of objects that are represented in the ontology."  Meaning the GCMD terms
(in the GCMD ontology) will map to the objects/classes in your
high-precision ontology?

It would indeed be nice if we ended up taking compatible approaches.

John

On Apr 2, 2013, at 00:12, Beth Huffer <beth at lingualogica.net> wrote:

We're working on the mapping problem at the ASDC as well. We're developing a
very robust, high-precision Earth Sciences ontology and will want to map it
to vocabularies such as GCMD because, among other things, we hope the
mappings will enable people to use our tools and our data using their own,
familiar vocabulary, without having to become familiar with our particular
vocabulary. My strategy, at this point, is to create an ontology of terms
which will have classes such as "GCMDCategory", "GCMDTerm", with individual
terms as instances.  The terms will denote objects and/or classes of objects
that are represented in the ontology.  I've adopted this particular approach
because it seems amenable to our objective of using an ontology to support
better data discovery, data fusion, and data analytics and will allow us to
map multiple vocabularies into a single ontology. 

I'd be interested in comparing approaches in cases where others have done
mappings.  

Beth Huffer
Consultant, NASA LaRC
Atmospheric Science Data Center
720-235-2295 (cell)
443-438-5433 (office)

On 4/1/13 3:52 PM, Marshall X Ma wrote:

We were working a bit on the mapping between two SKOS vocabularies, namely
CLEAN and GCMD, and we focused on the instance to instance mapping.

Personally I was thinking to focus on the mapping between instances of
'skos:Concept' and instances of subclasses of 'owl:Class', just do not want
to make myself confused between instance and class.

Some resources w.r.t. this issue, perhaps you already have them.

A document discussing OWL and SKOS:
http://www.w3.org/2006/07/SWD/SKOS/skos-and-owl/master.html

And there is a tool that can covert OWL ontologies to SKOS vocabularies:
http://owl.cs.manchester.ac.uk/owltoskos/

Thanks,

--Marshall

From: Steve Richard [mailto:steve.richard at azgs.az.gov] 
Sent: Monday, April 01, 2013 00:09
To: 'John Graybeal'
Cc: 'Marshall X Ma'; esip-semanticweb at rtpnet.org
Subject: RE: [esip-semanticweb] Mapping between CLEAN and SWEET or GCMD

I haven't delved into the problem recently, but I think the current trick is
'punning', in which an element it treated as either a class or an instance
depending on the context.

steve

Stephen M Richard

Arizona Geological Survey

416 W. congress #100

Tucson, AZ

AZGS: 520-770-3500

Office: 520-209-4127

FAX: 520-770-3505

From: John Graybeal [mailto:jgraybeal at ucsd.edu] 
Sent: Saturday, March 30, 2013 3:40 AM
To: steve.richard at azgs.az.gov
Cc: 'Marshall X Ma'; esip-semanticweb at rtpnet.org
Subject: Re: [esip-semanticweb] Mapping between CLEAN and SWEET or GCMD

Marshall, Steve, all,

Did you all ever come up with a best practice for bridging the SKOS-OWL
divide, as discussed below?  Back in the OWL 1.0 days I know this was, like,
unbridgeable, but with 2.0 I think the experts were talking about creating a
relation that appropriately related SKOS terms to OWL concepts. But then I
had to pay attention to other things....

John

On Nov 2, 2012, at 17:00, steve richard <steve.richard at azgs.az.gov> wrote:

The SKOS-OWL is particularly interesting to me (instance vs. class). I've
wrestled with this trying to figure out how to bind the CGI GeoScience
vocabularies ( <http://resource.geosciml.org/201202/>
http://resource.geosciml.org/201202/) with OWL (e.g. SimpleLithology2012
with
<https://www.seegrid.csiro.au/subversion/CGI_CDTGVocabulary/trunk/OwlWork/CG
I_Lithology.owl> CGI_Lithology.owl).

The issue emerges again in an ontology for geologic map unit integration
I've been working on. If you're at the Geological Society of America Meeting
in Charlotte next week, come and visit my poster

Monday Nov 5, Charlotte Convention Center, Hall B, Poster Booth Number: 186.
"A GEOLOGIC UNIT SCHEME FOR REGIONAL GEOLOGIC MAP INTEGRATION"

steve

From:  <mailto:esip-semanticweb-bounces at lists.esipfed.org>
esip-semanticweb-bounces at lists.esipfed.org [mailto:esip-
<mailto:semanticweb-bounces at lists.esipfed.org>
semanticweb-bounces at lists.esipfed.org] On Behalf Of Marshall X Ma
Sent: Thursday, November 01, 2012 4:30 PM
To:  <mailto:esip-semanticweb at rtpnet.org> esip-semanticweb at rtpnet.org
Subject: [esip-semanticweb] Mapping between CLEAN and SWEET or GCMD

We want to test the mapping between non-specialist vocabularies and
specialist vocabularies. A good example can be the mapping between CLEAN
vocabulary and SWEET ontology or GCMD keywords.

Anyone has done/thought this work before or, any ideas on the following
questions? Thanks.

* CLEAN is a non-specialist vocabulary for climate and energy

** ref:  <http://cleanet.org/clean/about/climate_energy_.html>
http://cleanet.org/clean/about/climate_energy_.html

** A SKOS encoding of CLEAN vocabulary seralized in turtle format:
<https://scm.escience.rpi.edu/svn/public/projects/gcis/branches/initial_rdf/
skos/clean.ttl>
https://scm.escience.rpi.edu/svn/public/projects/gcis/branches/initial_rdf/s
kos/clean.ttl

* [Question 1 ] Mapping between CLEAN vocabulary and SWEET?

** We have experience on mapping between two skos vocabularies: using
skos:broadMatch, skos:narrowMatch, etc.

** SWEET is in OWL encoding

*** Comparison between a skos concept and an owl class

*** Anyone has experience on mapping between skos and owl?

* [Question 2] Or, we can try to map between CLEAN vocabulary and GCMD
keywords?

** GCMD keywords has its version 7.0 in SKOS encoding:
<http://gcmd.gsfc.nasa.gov/Connect/docs/kms/KeywordManagementServiceAPI.pdf>
http://gcmd.gsfc.nasa.gov/Connect/docs/kms/KeywordManagementServiceAPI.pdf

-- Marshall

Xiaogang (Marshall) Ma

Postdoctoral Research Associate

Tetherless World Constellation

Rensselaer Polytechnic Institute

110 8th Street, Troy, NY 12180, USA

E-mail:  <mailto:max7 at rpi.edu> max7 at rpi.edu

Homepage:  <https://sites.google.com/site/xgmaitc>
https://sites.google.com/site/xgmaitc

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----------------

John Graybeal    <mailto:jgraybeal at ucsd.edu>     phone: 858-534-2162

Product Manager

Ocean Observatories Initiative Cyberinfrastructure Project:
http://ci.oceanobservatories.org <http://ci.oceanobservatories.org/> 

Marine Metadata Interoperability Project: http://marinemetadata.org
<http://marinemetadata.org/> 

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----------------

John Graybeal    <mailto:jgraybeal at ucsd.edu>     phone: 858-534-2162

Product Manager

Ocean Observatories Initiative Cyberinfrastructure Project:
http://ci.oceanobservatories.org

Marine Metadata Interoperability Project: http://marinemetadata.org

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