[auscope-geosciml] GeologicEvent and GeologicFeature [SEC=UNCLASSIFIED]

Bruce.Simons at dpi.vic.gov.au Bruce.Simons at dpi.vic.gov.au
Thu May 5 23:49:37 EDT 2011


Option A
I can live with option A, although I can't see how to readily order the 
GeologicEvents.

Option B
The constraint on the relationship in Option B would need to be lifted 
(GeologicEvents can be related to each other - in fact this is a bonus 
allowing relating GeologicEvents from different provinces). 
Removing the constraint, and adding a "rank:integer" property to 
GeologicFeatureRelation to cater for ordering (are there other uses for 
this property?), would also work, and negate the need for the extra 
GeologicHistory class.

Option A has the advantage that a tag <geologicHistory> will be 
searchable. Option B (without the special GeologicHistory class) will 
require a search on GeologicFeatureRelation where the target or source is 
a GeologicEvent.

Bruce
----------------------------------------------------
Bruce Simons
Senior Information Geoscientist
IUGS-Commission for Geoscience Information Oceania Councillor
GeoScience Victoria/Australian Spatial Research Data Commons
Level 9, 55 Collins St
PO Box 4440
Melbourne, Victoria, 3001
Australia

Ph: +61-3-9658 4502
Fax: +61-3-9658 4555
Mobile: +61 429 177155



From:   <Oliver.Raymond at ga.gov.au>
To:     <auscope-geosciml at lists.arcs.org.au>
Date:   06/05/2011 10:10 AM
Subject:        Re: [auscope-geosciml] GeologicEvent and GeologicFeature 
[SEC=UNCLASSIFIED]
Sent by:        auscope-geosciml-bounces at lists.arcs.org.au



Hi all,
 
I attach 2 options of what I think the UML could look like given the 
options presented by Marcus, John, Alistair and Bruce.  Firstly I should 
say here that the association between Unit/Structure and Event is pretty 
fundamental to geology and requires an explicitly named association (ie: 
geologicHistory) rather than using a non-specialised 
GeologicFeatureRelation and a vocabulary of relation types (sorry 
Alistair).
 
Option A.
 
We retain the geologicHistory association between GeologicUnit/Structure 
and GeologicEvent.  ie, geologicHistory effectively becomes a special case 
association between  particular GeologicFeatures, the same as we have 
already done with the definingStructure association between GeologicUnit 
and GeologicStructure.  This involves the least amount of change to the 
model and schemas from Version 2.
 

 
Option B.
 
We make all special associations between GeologicFeatures into constrained 
subtypes of GeologicFeatureRelation.  This would include GeologicHistory 
and DefiningStructure, and would make our treatment of associations 
between all GeologicFeatures consistent.  (Bruce, could you please provide 
more detail or an example of how to use this type of model in ordering 
events.  Are the constraints in the GeologicHistory class OK for your 
idea?)
 

 
Cheers,
Ollie
 
_______________________________________________________________________
 
Ollie Raymond
 
Project Leader
National Geological Maps and Data Standards Project
Geoscience Australia
 
Interoperability Working Group
IUGS Commission for the Management and Application of Geoscience 
Information
 
Address: GPO Box 378, Canberra, ACT, 2601, Australia | ABN: 80 091 799 039
Ph: +61 2 62499575  |  Fax: +61 2 62479992  |  Email: 
oliver.raymond at ga.gov.au  |  Google Map 
_______________________________________________________________________
 
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From: auscope-geosciml-bounces at lists.arcs.org.au [
mailto:auscope-geosciml-bounces at lists.arcs.org.au] On Behalf Of 
Bruce.Simons at dpi.vic.gov.au
Sent: Friday, 6 May 2011 9:39 AM
To: auscope-geosciml at lists.arcs.org.au
Subject: Re: [auscope-geosciml] GeologicEvent and GeologicFeature
 
An advantage with creating  a new sub-type of GeologicFeatureRelation for 
GeologicEvents is that it would allow adding a property to deal with the 
'order' of the events. This is specified in the NADM Conceptual Model but 
left out of earlier versions of GeoSciML as being too hard to implement. 

Bruce 


----------------------------------------------------
Bruce Simons 
Senior Information Geoscientist
IUGS-Commission for Geoscience Information Oceania Councillor
GeoScience Victoria/Australian Spatial Research Data Commons 
Level 9, 55 Collins St 
PO Box 4440 
Melbourne, Victoria, 3001 
Australia 

Ph: +61-3-9658 4502
Fax: +61-3-9658 4555 
Mobile: +61 429 177155
 
-----Original Message-----
From: auscope-geosciml-bounces at lists.arcs.org.au [
mailto:auscope-geosciml-bounces at lists.arcs.org.au] On Behalf Of Laxton, 
John L.
Sent: Thursday, 5 May 2011 10:37 PM
To: auscope-geosciml at lists.arcs.org.au
Subject: Re: [auscope-geosciml] GeologicEvent and GeologicFeature
 
You would have to query all targetlinks from a GeologicUnit to find those 
which targeted GeologicEvents, and then query the targetlinks of those 
GeologicEvents to get the geological history. It sounds a bit complicated 
but if you think it is practical.....
 
John
 
-----Original Message-----
From: auscope-geosciml-bounces at lists.arcs.org.au [
mailto:auscope-geosciml-bounces at lists.arcs.org.au] On Behalf Of Alistair 
Ritchie
Sent: 05 May 2011 13:11
To: auscope-geosciml at lists.arcs.org.au
Cc: auscope-geosciml at lists.arcs.org.au
Subject: Re: [auscope-geosciml] GeologicEvent and GeologicFeature
 
Is such specialization necessary? Events can be sensibly related to all 
other GeologicFeatures, including themselves.
 
Seems to be introducing more complexity into the model when 
GeologicFeatureRelation, and the appropriate vocabularies, would suffice.
 
On 05/05/2011, at 20:45, "Laxton, John L." <jll at bgs.ac.uk> wrote:
 
> Yes - I think you are going to have to define a new sub-type of 
GeologicFeatureRelation (like BoundaryRelationship) specifically targeting 
GeologicEvent.
> 
> I originally proposed a new sub-type of GeologicRelation and to avoid 
this that it was proposed to make GeologicEvent a type of GeologicFeature, 
which still requires a new relation type albeit at one level lower......
> 
> John
> 
> -----Original Message-----
> From: auscope-geosciml-bounces at lists.arcs.org.au [
mailto:auscope-geosciml-bounces at lists.arcs.org.au] On Behalf Of Alistair 
Ritchie
> Sent: 05 May 2011 11:19
> To: auscope-geosciml at lists.arcs.org.au
> Cc: auscope-geosciml at lists.arcs.org.au
> Subject: Re: [auscope-geosciml] GeologicEvent and GeologicFeature
> 
> You would have to replace the geologicHistory association with a 
relationship defined using GeologicFeatureRelationship, yes?
> 
> This would allow semantic richness using the role properties on the 
relationship class.
> 
> 
> On 05/05/2011, at 19:45, "Sen, Marcus A." <mase at bgs.ac.uk> wrote:
> 
>> If GeologicEvent is made a GeologicFeature will it still be appropriate 
to have the geologicHistory property included as a property of 
GeologicFeature?
>> 
>> Other properties currently in GeologicFeature but not GeologicEvent 
are:
>> 
>> observationMethod - guess that is applicable to a GeologicEvent as well
>> purpose - can this apply to a GeologicEvent?
>> occurrence - Seems to make sense as e.g. mapping location of epicentre 
of an earthquake. Distinct from the mapped features delimiting e.g. 
GeologicUnits that have been affected by certain GeologicEvents.
>> targetLink - the property that people want on GeologicEvent that 
started the discussion
>> 
>> (classifier and metadata properties are defined separately for both 
feature types.)
>> 
>> Marcus
>> 
>> 
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