Linked Open Data: Then, Now and Next David Wood 26 September 2011 http://purl.org/net/prototypo/lod-then-now-nextWednesday, September 28, 11
Wednesday, September 28, 11Let’s start with a question: Why do we share?
Wednesday, September 28, 11For 95% of the history of homo sapiens sapiens (roughly 200K years), every human on theplanet lived in hunter-gatherer tribes of 25-100 people. We shared only with our group.(Photo: John Batman signing treaty with Wurundjeri people, 1835, Meri Creek, Victoria,Australia)
Wednesday, September 28, 11On the Web, we share a lot with everyone. We are still ﬁguring out whether and how muchwe want to share (e.g. Facebook, G+).But why do we share at all? Especially with strangers?
“more anterior sectors of the prefrontal cortex are distinctively recruited when altruistic choices prevail over selfish material interests” - Jorge Moll et alWednesday, September 28, 11In their paper “Human fronto–mesolimbic networks guide decisions about charitabledonation”, Moll et al showed that the subgenual cortex region was activated as it would befor food or sex. See http://www.pnas.org/content/103/42/15623.abstract
“For it is in giving that we receive.” - Saint Francis of AssisiWednesday, September 28, 11We’ve known the basics of this for a while.
Wednesday, September 28, 11Culture also plays a strong role in our actions, too. We also share because, like LARPers, wewant to be someone’s hero.Reduced size movie poster used for educational purposes under Fair Use provisions. Seehttp://www.darkonthemovie.com for the original (and a great movie).
Wednesday, September 28, 11Of course, we don’t always want to share. Sometimes we want to keep things private, likethis liabilities spreadsheet. Spreadsheets are hard to share so they work well for private data.
Wednesday, September 28, 11Some Linked Data is public. The Linked Open Data project consists of free and open data onthe Web that has been interlinked together. Volunteers interlinked data that was alreadyfreely available.May 2007
Wednesday, September 28, 11September 2011: 295 datasets that meet the LOD Cloud criteria, consisting of over 31 billionRDF triples and are interlinked by around 504 million links.
Wednesday, September 28, 11Mallard Web page, BBCData comes from DBpedia, WWF and other Linked Data sites. BBC curates data on the Web to ensure data quality.This is a fundamentally new business model for corporate data (and an indication of how far the EU/UK are in front ofthe US in this nascent market).
Wednesday, September 28, 11Each HTML page is paired with a machine-readable data representation.
We’ve Seen This BeforeWednesday, September 28, 11Like HTML and RDF, credit cards have a human-readable side and a machine-readable side.
Wednesday, September 28, 11Linked Data may be rapidly repurposed, displayed in different ways for a variety of uses.
Wednesday, September 28, 11Will Linked Data cross Geoffrey Moore’s chasm? Some say that the Semantic Web will neverhappen, that relational databases are too entrenched, that no large organizations will everinvest in such an unproven technology.
YouTube HDTV watch Better watch videos videos Publish videos Share videos Rate videos Discuss videosWednesday, September 28, 11Steven Johnson’s excellent book “Where Good Ideas Come From” uses this example in theﬁrst chapter to encourage readers to think about why some technologies go viral and othersdon’t. YouTube was an overnight success in two years, compared to the twenty it tool HDTVto take hold, in spite of signiﬁcant governmental backing.
Linked Data RDBMS Use data Use data Publish data Share data Rate data Discuss dataWednesday, September 28, 11There is a reason that the Linked Open Data project has grown rapidly in four years, from asmall volunteer effort to being used in production by governments and large companies.
Wednesday, September 28, 11Some large commercial and government organizations would beg to differ...plus many moreuniversities, small and medium sized companies and Open Source projects.Many of these are careful, slow-moving entities who simply needed to ﬁnd real solutions toreal problems.
Wednesday, September 28, 11What’s next? We are already seeing signs of the things to come.
Coming Soon Linked Data warehouses Linked Data supply chains Linked Data analyticsWednesday, September 28, 11
Wednesday, September 28, 11The ﬁrst Linked Data warehouses are being built now. This one shows data from ﬁve datasources being combined into a single, comprehensive view using only seven HTML+RDFatemplates. Current market size: 10B USD annually.
Wednesday, September 28, 11Supply chains are international, heavily optimized and nearly real-time. How can they beimproved? The use of Linked Data principles could distribute aspects of price and volumecontrol while encouraging competition and stock transparency - at a fraction of current EDIcosts. Current market size: 205M USD annually (Web analytics), 6B USD annually (enterprise).
Wednesday, September 28, 11What will the data analytics market look like if more companies mix public and private datafor mission-critical applications, or construct supply chains using Linked Data? Market sizefor BI software: 16B USD annually.
Wednesday, September 28, 11Data analytics in the commercial market requires knowledge of where data came from. Astandard for data provenance is on its way.
Further Reading http://linkeddatabook.com/editions/1.0/ http://3roundstones.com/linking-enterprise-data/ http://www.linkeddatadeveloper.com/Wednesday, September 28, 11http://linkeddatabook.com/editions/1.0/http://3roundstones.com/linking-enterprise-data/http://www.linkeddatadeveloper.com/
CallimachusWednesday, September 28, 11 Check out the world’s Linked Data management system, Callimachus. Callimachus is Open Source Software licensed under the Apache 2 license. We encourage you to check it out and to participate.