Go-Geo! - A Geo-data Portal

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Go-Geo! - A Geo-data Portal
Go-Geo! will be a resource discovery tool that
tells users what geo-spatial data and related
resources exist for a given area phase II
demonstrator project JISC funded, commenced June
2002, 1 year duration joint project between EDINA
and HDS aim develop a demonstrator service
suitable for extension to full service links with
national effort, the NGDF network uses HE/FE
extension to NGDF metadata discovery guidelines
to describe geo-spatial datasets need to migrate
to use ISO 19115 in time built upon Z39.50
technologies
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Vision

• promote greater awareness of geo-spatial data
  within HE
• increasing amounts of geo-spatial data being
  created
• help make more (effective) use of these data
• promote greater awareness of geo-spatial data
  within the wider GI community in the UK
• an access point to geographically related
  resources
• obvious things (software, learning resources,
  training, etc.)
• BUT ALSO case studies, articles, images and
  projects, mail lists etc
• all tied together by location
• portal becomes a geographically oriented access
  point to the JISC Information Environment
• long term, if it becomes a service, extend to
  support access and data fusion

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Geo-spatial data data that have some form of
spatial or geo-graphic reference that enables
them to be located in two- or three-dimensional
space
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Other IEContent Providers
Geo-data Gateway
NGDF Network
Go-Geo! portal architecture
Metadata or resource servers
Geo-data Network(proposed)
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Challenges

• creation of metadata
• how do we encourage documentation of geo-spatial
  data?
• how do we ensure metadata is comprehensive,
  current?
• discovery is all very well but what about access
• researchers and lecturers unable to handle
  requests for data
• require mechanism for 'publishing' their data
• integrating existing geo-spatial data
  descriptions
• e.g. HDS uses DDI not NGDF metadata guidelines
• spatial searching for related resources
• majority of services within JISC IE have no
  geo-referencing
• even if they were, the Z39.50 software employed
  either
• doesn't support appropriate profiles e.g. GILS,
  GEO
• doesn't have functionality to undertake spatial
  searching

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Cross-searching the JISC IE 1
JISC IE
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Cross-searching the JISC IE 2 Find me resources
about my study area
Map area 340900, 392300 - 347217, 397660
Place names
Postcodes
Parish names
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The services registry

• Need to know
• service provider
• e.g. name, description, contacts
• service details
• e.g. service name, description, access point,
  content type
• technical details of the service
• e.g. protocol (Z39.50), profile (geo), element
  set details
• additional information e.g.
• spatial domain
• form of geo-referencing
• spatial search attributes
• geographic MBR of contents
• time coverage
• metadata standard and mappings
• which software

• Using UDDI approach
• businessEntity
• businessService
• bindingTemplate
• tModels
• xml extensions
• stored in bindingTemplate
• tmodel instance details
• instance details
• instance parameters
• for internal geo-portal service use only
• still early stages of thinking

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JISC Information Environment
Content providers
Shared services
Authentication
Authorisation
Broker/Aggregator
Collectn Desc
Portal
Portal
Portal
Go-Geo! Portal
Service Desc
Resolver
Instn Profile
End-user
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Contacts

• Dr David Medyckyj-Scott
• Manager, Research and Geo-Data Services
• Email d.j.medyckyj-scott_at_ed.ac.uk
• EDINA web site http//edina.ac.uk
• Tel. [phone]
• Fax [phone]