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An IT Research View on SDI futures Dave Abel CSIRO Enterprise Distributed Systems Technology CRC
An IT Research View on SDI futures
Dave Abel
CSIRO
Enterprise Distributed Systems Technology CRC
Roadmap
• SDIs and purposes;
• Research agendas;
• Interoperability goals;
• The IMP architecture;
• The IAW project.
SDIs
Many interpretations, goals differ significantly.
An SDI is a collection of data sources and geoprocessing facilities, contributed by many autonomous units, with infrastructural support and standards.
Layered Objectives
An SDI should enable:
• advising availability of data sets;
• on-line access to data sets;
• applications integrating data from several sources;
• applications integrating data with use of geoprocessing services.
Research Agendas
A rich, interwoven mix of issues:
• organisational;
• informational;
• technical;
• exploitation.
Distinctive Aspects
• Immense collections of resources;
• High rate of technical change;
• Forms of exploitation that are still largely “to be determined”;
• High (and continuing?) heterogeneity;
• Federated model.
Tests of Interoperability
a low cost of infrastructure to enable interoperability; a high degree of provider autonomy; the ease for a provider of participation; the ease of accessing services and deriving data products; the breadth of tasks supported; scaleability in the number of data services present.
The Internet Marketplace Model
APPLICATIONS (customers)
The Internet
SERVICES (providers)
The Glue
• Two types of services: data supply and geoprocessing;
• a common language (the RSL) to request supply of data or processing;
• XML for delivery of data (but …);
• Internet protocols for connection and interaction.
Sydney’s Information Highway
EO Image Analyst’s Workbench
IAWImage Store
ER Mapper
CSIRO Software
ENVI
