towards the open geospatial web
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Towards the Open Geospatial Web. –Chris Holmes. “Architectures of Participation”. – Coined by Tim O’Reilly. - PowerPoint PPT PresentationTRANSCRIPT
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Towards the Open Geospatial Web
–Chris Holmes
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“Architectures of Participation”
– Coined by Tim O’Reilly
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An “Architecture of Participation” is both social and technical, leveraging the skills and energy of users as
much as possible to cooperate in building
something bigger than any single person or organization
could alone.
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Architectures of Participation
Software: The first domain to see benefits
The process can be applied to other fields
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Geospatial
Data
Creation Sharing
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Primary Goal
“…the sources, systems, network linkages, standards, and institutional issues involved in delivering spatially-related data from many different sources to the widest possible group of potential users at affordable costs.”
Geo Data Sharing…
– Groot & McLaughlin 2000
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The Success of SDIs?
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Compelling Initiative
User at the Center
User Responsibility
No Barriers or Difficulty
Factors for Success
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Contribute to Compelling Initiative.
• Mandated law != useful• Few real users• No recognition• No reward for the effort• Try again in five years?
vs.
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• Quickly add data to quality map• Ease of customization• Recognition: Shared, emailed, blogged about…• Indexed & Searchable
Contribute to Compelling Initiative
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• Consumers ≠ Producers
• Data from “official” sources
• Metadata takes training
• GIS Professionals Only
Users as Contributors
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Users as ContributorsMaps
• Consumers = Producers
• Everyone encouraged to contribute
• Community members grow in to experts
• Even used for ‘real GIS’ …it’s easier than getting on an SDI
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SDI Contributing: Data
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Hardware
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Software
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Metadata
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Metadata Training
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A Catalog to Register On
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Contributing Data to Google…
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Barriers to Entry…
Browser
Metadata
Training
Server Hardware
WMS Software
Sharing Agreements
Catalog Registration
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Does user contributionalone make an SDI?
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Let commercial players run SDI?
• SDI’s are a public good
• Commercial players have profit motive
• Commercial players seek monopoly
DANGER: Governments are handing over data
without opening it to anyone else!
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Towards the Open Geo Web
Inclusive Infrastructure
Single “Geo Web” Project
Unlimited Potential
Build on existing Architectures of Participation
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Principles: Towards the Open Geo Web
Not just policies,
requirements & mandates
Align incentives to create
a single Geospatial Web
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Geospatial
Data
Creation Sharing
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OpenStreetMap
Geo Data Creation:
• Is already here…
MapShare™
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OSMMaps
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Maps
OSM
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…Though far from mature
• Licensing is a big problem
• Tools are unsophisticated
• Few different workflow options
• But huge potential has been proven
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Towards Maturity:
Workflow
vs
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Towards Maturity:
Scope
vs
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Towards Maturity:
Tools• Compatibility with GIS tools
• Advanced workflow management
Sandboxes, approval before acceptance
Automatic validation (topology, required fields)
Branches and merging with Conflict Resolution
Automatic change notification email / rss
• Automatic feature extraction: GPS tracks and Satellite images
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Towards Maturity:
Licensing
For Geodata?
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Towards Maturity:
Cooperation
• Align efforts so that amateur, commercial, NGO and governmental creators all naturally collaborate
• Figure out workflows, tools and licenses that work for everyone
• Put NMCAs at the center, incentivizing updates to core layers (from citizens and companies)
• Towards living data, constantly evolving - authoritative and always up to date
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Towards Maturity:
The role of the NMCA
• Natural leader, the most experience capturing and maintaining the highest quality data
• Must build upon success of accurate and official maps with latest techniques to improve with participation
• Look to derive revenue from services around the data
• Use Open Source Business models as examples
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Learning from Open Source Business• Hosted Services
Geocoding
Route finding
Custom Tiles
Hosting additional layers, etc.
• Guarantee of accuracy
• Value add packaging - formats, documentation, software
• Subscription to latest updates
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Build on other Architectures of Participation
• Don’t go it alone
MapShare™
Align their success with yours
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Beyond Portals
• Web Portals went out of fashion in 2001
• ‘GeoWeb Node’ = GeoPortal 2.0
• GeoPortal goal: find existing data
• GeoWeb Node goal: increase creation and sharing of data
• End goal of both is easier to find and use data
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No more Aquariums!
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Join the Web!
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A Geo Web Node
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GeoWeb Node:
Rooted in Data Access
PostGIS
Oracle Spatial DB2ArcSDE
MySQL
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GeoWeb Node:
Spreading to the Geo Web
GoogleEarth
VirtualEarth
GoogleMaps
NASAWorldWind
Yahoo! Maps
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GeoWeb Node:
Integrated Viewer
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GeoWeb Node:
Online Styling
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GeoWeb Node:
Easy upload
Choose File Geofile.shp
Upload
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GeoWeb Node:
Searchable by Google
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GeoWeb Node:
Editing
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GeoWeb Node:
Versioning and advanced workflow
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GeoWeb Node:
User accounts
• User statistics
• Comments, ratings, tags
• Collaborative Filtering
• Rankings of best ‘views’ and data sets contributed
• Highest rated, most viewed, most shared
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GeoWeb Node:
Metadata
• Derive from user actions
• Don’t require metadata to put out data
• Wiki type editing of metadata
• Automatically available with the Catalog standards
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Where to put these nodes?
• Everywhere!
• Anywhere you might put a portal
• Anywhere you have an ‘Enterprise GIS System’
• Anywhere people share data with each other
• Handling all these use cases will evolve GeoWeb nodes to be truly useful
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Proprietary vs. Open Source Nodes
• Implementation of standards is the most important
• Open Source has advantages– Keep vendors honest with standards– Technical innovation by all– Increasing returns on investment
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Open vs Closed Geo Data
• Most important thing is that data is accessible in all standard formats
• But the Geo Web will be built on Open Data
– Google has proven this
– An open base will lead to more contributions on top
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Official vs. User-contributed Data
One Infrastructure
Limited User Permissions
Optional Commenting & Rating
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• The future is users
• Geo Participation– GIS Professionals– Amateur Neo Geographers– Anyone with a locative device
• Technology & Community
The Future: Beyond Portals
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My GeoWeb Goal
Let’s build a Geo Web that’s so compelling and easy-to-use that
everyone: Citizens, Governments, NGO’s and Companies all naturally
collaborate towards the same infrastructure for public good.
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What you can do:
• Go beyond portals, build National Geo Web Nodes with free hosting for open contributors
• Try opening data in open source / share alike and/or non-commercial ways, align incentives back
• Look for new business further up the value chain, just selling data may not last
• Partner with companies who are correcting data and moving up the value chain, don’t go it alone
• Experiment with participation, both internally and externally
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Learn more…
www.geoserver.org
www.opengeo.org
www.cholmes.wordpress.com
This work is licensed under a Creative Commons Share Alike Attribution License. Please attribute Chris Holmes, and keep the OpenGeo.org logo on all slides, unless alternate permission is given. Contact [email protected] for more information