"Seegrid will be due for a migration to confluence on the 1st of August. Any update on or after the 1st of August will NOT be migrated"

Third (and final) AUKEGGS workshop


The final workshop funded under the AUKEGGS collaboration will be held at the Australian National University on Wed 29 Nov, 2006.

Venue

The meeting will be held in Room N101 (ground floor) of the Computer Science & Information Technology building (Building number 108 at Grid Reference GH54 on the campus map).

Access Grid facilities are available at this venue. Please contact A.Woolf@rl.ac.uk for further information.

Agenda

The preliminary agenda is as follows:
Time Who What
08:30-09:00 tea/coffee
09:00-09:05 Clinton Foster (Chief of Division, Petroleum & Marine Division of GA) Welcome
09:05-09:10 Andrew Woolf (CCLRC) AUKEGGS review ppt
09:10-09:30 Bryan Lawrence (NCAS) NDG Discovery Gateway, ISO19139 Issues, ppt
09:30-09:50 Glenn Hyland/Steve Phipps (TPAC) TPAC Grid update, Hyland - ppt Phipps - pdf
09:50-10:10 Kate Roberts (BlueNet) Australian Marine Data, AODCJF and BlueNet, ppt
10:10-10:30 Jeremy Tandy (MetOffice) UK MetOffice, WMO activities, ppt
10:30-11:00 tea/coffee
11:00-11:20 Chris Higgins (EDINA), Phil James, Andrew Woolf OGC and Grid in UK, abs ppt
11:20-11:40 Rob Woodcock (CSIRO) OGC and Grid in AU, abs ppt
11:40-12:00 Simon Cox (CSIRO) Managing different views of data (features vs coverages, O&M etc), abs ppt
12:00-12:20 Josh Lieberman (Traverse Technologies, Inc.) Geotags to GeoSWRL: Weaving Where into the Web, abs pdf
12:20-12:40 Keiran Millard (HRW) MOTIIVE, ppt
12:40-13:30 lunch
13:30-13:50 Dominic Lowe (BADC) Implementing CSML Feature Types in applications within the NERC DataGrid, abs ppt
13:50-14:10 Rob Atkinson (SCO) Architecturally significant issues, ppt
14:10-14:45 Roundtable One Interoperability for relational data
14:45-15:15 tea/coffee
15:15-15:35 Jon Blower/Adit Santokhee (ESSC) DEWS, geoserver extensions for n-d ppt
15:35-15:55 Andrew Woolf (CCLRC) Exposing legacy file-based data, abs ppt
15:55-16:30 Roundtable Two Interoperability for file data
16:30-17:00 Roundtable Three AUKEGGS - Continuing the Collaboration?

AUKEGGS review
Related activities
Legacy data interoperability

Additional topics

  • Metadata Profiles (practicalities of profiling ISO 19115/19139)
  • Domain modelling


Abstracts

Andrew Woolf

AUKEGGS Review

Exposing legacy file-based data

A number of application domains, particularly in Earth system science, utilise data stored in very large binary files. While these formats are generally well-known within a community, they are not based on the emerging geospatial standards underpinning SDI development. A number of issues arise - for instance the requirement to remain compatible with existing applications, the benefit of using existing performant APIs, aggregation of logical structures across files, handling multiple formats in a scalable manner. We consider the case of coverage data over an ISO 19123 CV_ReferenceableGrid (i.e. irregular spacing) as an exemplar, and propose a pattern on the xlink 'by-reference' mechanism of GML for providing an "interoperability bridge" for such file-based data.

Bryan Lawrence

NDG, 'datasets' granularity, implementing discovery/browse


Glenn Hyland, Steve Phipps

TPAC Grid update, SRI proect, OAI/DL, ...


Kate Roberts

Oceans Portal, integrating data from the higher ed/research sector, AODCJF/IOC activities


Jeremy Tandy

UK MetOffice, WMO activities


Chris Higgins

OGC and Grid in UK

We review various activities in the UK concerned with the application of Grid concepts and technology to OGC services.

The 'Grid-GIS' ad-hoc working group of the National Institute for Environmental e-Science (NIEeS) provides a forum for discussion of the application of Grid technology in GIS applications. A wiki has been established, and effort is currently focussed on preparing a proposal for funding. As well, the group will contribute to an OGC session at the May meeting of the Open Grid Forum.

The UK Joint Information Systems Committee (JISC) recently funded two proposals on the 'Grid-OGC' collision. One investigates the integration of Shibboleth Grid security technology into OGC services; the other investigates semantically-aware workflows for orchestration of OGC services. A third proposal not funded under the call examines the potential for refactoring OGC services as stateful web services.

Rob Woodcock

OGC and Grid in AU

The APAC Geoscience Grid and SEE Grid Information Services projects have separately demonstrated the use of Grid and OGC service standards in Australia. With the introduction of the National Collaborative Research Infrastructure Scheme (NCRIS), Australia is now poised to combine these separate technologies to establish a major, national research infrastructure that provides interoperability between geoscience information sources and high performance computing and storage facilities across Australia. This infrastructure will provide the foundations necessary to support the multi-disciplinary research necessary to sustainably manage Australia's key resources and geological hazards.


Simon Cox

Managing different views of data (features vs coverages, O&M etc)

The OGC Abstract Spec/ISO 19100 series uses the General Feature Model as the fundamental meta-model for conceptual information. The feature model is easy to understand and apply where the items of interest correspond to discrete, identifiable objects in the real world. An alternative viewpoint is that the world may be described in terms of the variation of properties. This viewpoint is accommodated by the Coverage model.

In earth science we frequently transform between these viewpoints, as we move from evidence to interpretation, and on to simulation and prediction. We also find coverages occurring as the values of certain feature properties, in cases where the identity of the a feature instance is such that a property varies within the scope of the feature. This may include temporal variation.

Observations (as described in the OGC Best Practice paper) are events that produce an estimate of the value of a feature property, which may be a coverage. Observation and assertion are the two ways that a value is associated with a feature property.

Hence, the relationship between observations, features and coverages is a key to managing the information involved in earth science. In parallel with this, the various OGC data-access interfaces (SOS, WFS, WCS) also have strong implicit relationships.

Josh Lieberman

"Geotags to GeoSWRL: Weaving Where into the Web"

The Geospatial XG is a W3C Incubator Group formed recently to figure out how to make geographic identity and relationships a natural aspect of the Web. It aims to make 3 contributions:
  • Update the W3C Geo vocabulary with the work of GeoRSS 1.0 to enable large-scale geotagging of Web resources (geosemantic Web with a small "g").
  • Propose a basic geospatial ontology to enable geospatial discovery and orchestration of heterogeneous Web resources (Geosemantic Web with a large "G").
  • Develop a charter for a subsequent and persistent geospatial activity within the W3C.
The Terra Cognita workshop at ISWC'2006 recently brought together many of the participants in this activity to organize their efforts and develop a schedule for completing the primary work items by Spring 2007.

Keiran Millard

MOTIIVE


Dominic Lowe

Implementing CSML Feature Types in applications within the NERC DataGrid

The NERC DataGrid uses a feature type model encoded in a GML application schema (Climate Science Modelling Language) as an intermediary data format to harmonise access to data holdings in various data formats from distributed Atmospheric and Oceanographic data centres.

To implement this feature model in a production environment an integrated collection of tools has been built (in Python).

By explicitly using a feature-centric model in the code we have been able to interact with CSML features in several ways which has simplified the end-to-end data-delivery process.

This includes creating CSML documents from numerous legacy data sources, through to user inspection of features, through to operations such as subsetting of features and repackaging data for delivery either to users directly or to client applications such as a WCS interface.

Rob Atkinson

Architectural principles, geoserver complex data extensions, expoing legacy relational data


Jon Blower/Adit Santokhee

DEWS, geoserver extensions for n-d


Topic attachments
I Attachment Action Size Date Who Comment
CoxAUKEGGSFeaturesCoveragesObservations.pptppt CoxAUKEGGSFeaturesCoveragesObservations.ppt manage 900.5 K 05 Dec 2006 - 10:27 SimonCox Information views: Features, Coverages and Observations
Topic revision: r19 - 15 Oct 2010, UnknownUser
 

Current license: All material on this collaboration platform is licensed under a Creative Commons Attribution 3.0 Australia Licence (CC BY 3.0).