Linked Ocean Data1. What is Linked Data? 2. Linked Ocean Data - the story so far

http://linked.bco-dmo.orghttp://linked.rvdata.ushttp://ocean-data.org/odoBrowse/odoBrowse.html

Data available on-line, through the World Wide Web

Data available in a machine readable, structured format: e.g. a spreadsheet, not an image of a table

Data are supplied in a non-proprietary format, e.g.Comma Separated Values, instead of MS Excel

Data are supplied using open standards from theWorld Wide Web Consortium

Data are published with links to other datasets inorder to provide context

NERC Vocabulary

Server

DBPedia

General Multilingual

Environmental Thesaurus

GeoNames

Marine MetadataInteroperability

Ontology RR

Ordnance Survey

MarineSpecies

Life SciencesID

RV InfoBase

OceanBiogeographic

InformationSystem

Rolling DeckTo Repository Biological &

Chemical OceanographyData Management

Office

BODCPublished Data

Library

InternationalCoastal Atlas

Network

Index toMarine & LacustrineGeological Samples

SeaDataNet

Global ChangeMaster Directory

Keywords

British BroadcastingCorporation

Legend

RDF Vocabulary resources

CSIRO Waterquality vocab.

Non-RDF Vocabulary resources

RDF (meta)data resources

Non-RDF (meta)data resources

CEHAnalytical Services

Thesaurus

Chemical Entitiesof Biological Interest

European MarineObservation and

Data Network

EnglishHeritage

In September 2013, we introduced the concept of the Linked Ocean Data cloud, a diagramvisualising the datasets and vocabularies we know of relating to oceanography published andconnected using the Linked Data methodology. The latest version of that diagram is presented here.

Linked Data is about using the World Wide Web to connect related data that wasn't previously linked, or using the Web to lower the barriers to linking data currently linked using other methods. More specifically, Wikipedia defines Linked Data as "a term used to describe a recommended best practice for exposing, sharing, and connecting pieces of data, information, and knowledge on the Semantic Web using web addresses and structured data formats (RDF)."

3. New directions - next steps

4. Conclusions

ReferenceLeadbetter, A., Arko, R., Chandler, C., Shepherd, A., & Lowry, R. (2013). “Linked Data: an oceanographic perspective.” Journal of Ocean Technology 8(3), 7-12.

ŸAnswering data management questions - Query the Linked Data - Which Rolling Deck to Repository cruises may be of interest to the Biological and Chemical Data Management Office?ŸAnswering science questions - What data aggregations are scientifically meaningful? - Integrating multi-disciplinary dataŸCreating impact with Linked Data - Linking data to publications through DOIs and landing pages with Linked Data - Linking research data to broadcast media outputŸNext steps - Build on the Ocean Data Ontology, Observations & Measurements and the World Wide Web Consortium’s PROV to describe research cruises, instrument deployments etc...

ocean-data:Dataseta prov:Activity

o&m:Observation

ocean-data:Cruisea prov:Activity

ocean-data:Projecta prov:Activitya foaf:Project

prov:wasGeneratedBy

prov:wasInformedByprov:wasInformedBy

ocean-data:Originatora prov:Persona foaf:Person

prov:wasAssociatedWith

ocean-data:ChiefScientista prov:Persona foaf:Person

prov:wasAssociatedWithocean-data:Organization

a prov:Organization

prov:actedOnBehalfOf

prov:actedOnBehalfOf

Adam Leadbetter , Robert Arko , Cynthia Chandler and Adam Shepherd1. British Oceanographic Data Centre,2. Lamont-Doherty Earth Observatory, Columbia University3. Woods Hole Oceanographic Institutions

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R71 - EGU2014-1335

ŸBenefits of the Linked Data approach:- Loose integration of data - no overly complex integration

- Data presented not in standardised systems - Common links in the metadata chain

- But that common link must be identified and is required somewhere in (meta)data - This gives rise to the idea that “small pieces of (meta)data are loosely joined”

- Federated querying - Common access point to query multiple Linked Data nodes - No mirroring / caching required

- But it can be beneficial in certain circumstances- Allows standard tools to be deployed

- Future work will allow more easy integration of multi-disciplinary data