How the Web of Data Will be Won
John SheridanJeni Tennison
Overview
• Mapping Territory
• Laying Tracks
• Gold Mining
• Civil War
• Winning the Web of Data
Mapping Territory
photo from Cornell University Library on flikr
Open Gov't Data
• Pioneers
• Wide open plains
• data.gov.uk
• Our legacy?
Why Linked Data
• "web data"
• Publishers and consumers
• Open standards
• Distributed data
• Small pieces loosely joined
Our Approach
• Winchester '73
• Design patterns
• Try and evolve
• Learning from mistakes
Laying Tracks
photo from Cornell University Library on flikr
URIs
• Things, documents, definitions, datasets
• Recommendations for persistence
• Initial URI sets: legislation, schools, geographies ...
http://{sector}.data.gov.uk/id/{concept}/{id}http://{sector}.data.gov.uk/doc/{concept}/{id}http://{sector}.data.gov.uk/def/{scheme}/{concept}http://{sector}.data.gov.uk/data/{package}/{subset}
Versioning
• Multiple sources, multiple versions over time
• Named graphs and metadata
• dates and relations to other versions
• authority
• source and provenance
• Time-based slices of data
Provenance
• Reproduceability as the basis of trust
• Hugely complex
• origination
• processing
• validation
• Applies to real-world artifacts as well as data
Gold Mining
photo from http://www.archives.gov/research/american-west/
Statistics
• Rich seam of data
• SDMX from eg Office for National Statistics
• Excel spreadsheets
• Pattern for publishing statistics in RDF
• Tools to create linked data from Excel
• http://groups.google.com/group/publishing-statistical-data
Geo-spatial Data
• Tie in with INSPIRE European Directive
• spatial objects must have identifiers (URIs)
• specific metadata about spatial objects
• Publication of geometries (eg boundaries)
•http://www.terrafuture.com/
Civil War
photo from ♪_Lisa_♪ on flikr
Linked Data API
• Neglect usability at our peril
• ease of querying
• ease of processing
• Layer processing on SPARQL endpoint
• create developer-friendly APIs
• More later this afternoon...
Other Services
• Resolution
• searching for the right URI
• Enrichment
• marking up text with UK Government terms
• Backlinking
• Finding pointers from the rest of the cloud
Winning the WoD
photo from http://www.archives.gov/research/american-west/
Winning the WoD
• For everyone
• Brutally practical
• Doing "stuff" matters
Conclusions
• Early days
• Making progress
• Come join us
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