Embrace The Chaos

Embrace the Chaos 7/11/2009 Ex Libris Authority Panel

There are many ‘webs’ now
Hypertext web
Hyperlinked resources for humans
Semantic web
Resources for thinking machines
Linked Open Data web
Hyperlinked data resources for machines (thinking or not)
7/11/2009 Ex Libris Authority Panel

Just a bit about RDF
RDF ‘statements’ have a simple but formal grammar:
<subject> predicate object
<resource> property Value
<http://RDVocab.info/Elements> dc:title "RDA Elements (Group 1)"

RDF Vocabularies A predefined set of predicates 7/11/2009 Ex Libris Authority Panel

SKOS
“ Simple Knowledge Organization System”
“ Using SKOS, concepts can be identified using URIs, labeled with strings in one or more languages, assigned notations (codes), documented with various types of note, linked to other concepts and organized into hierarchies, aggregated into concept schemes , grouped into collections , and mapped to concepts in other schemes.” 7/11/2009 Ex Libris Authority Panel

A trip down Linked Data lane Courtesy of The National Digital Newspaper Program (special thanks to Ed Summers, Library of Congress) 7/11/2009 Ex Libris Authority Panel

Chronicling America
“… search and view newspaper pages from 1880-1922 and find information about American newspapers published between 1690-present.”

About this Newspaper: The Daytona Daily News
HTML http://chroniclingamerica.loc.gov/lccn/sn93063916/
RDF http://chroniclingamerica.loc.gov/lccn/sn93063916.rdf
MARC (HTML) http://chroniclingamerica.loc.gov/lccn/sn93063916/marc/
MARC (XML) http://chroniclingamerica.loc.gov/lccn/sn93063916/marc.xml
WorldCat (HTML only?) http://www.worldcat.org/oclc/1631353

Un-Linked Data
MARC21 has a naming convention for place names … 752 $a United States $b Florida $c Volusia $d Daytona Beach.
Wikipedia also has a naming convention for place names … http://en.wikipedia.org/wiki/Daytona_Beach,_Florida
Ed created a little script to use the 752 hierarchy to build a Wikipedia URL and see if it would resolve as a URI from DBpedia…

Linked Data
Dbpedia: <dcterms:coverage rdf:resource= http://dbpedia.org/resource/Daytona_Beach%2C_Florida />
Geonames: <dcterms:coverage rdf:resource= http://sws.geonames.org/4152872/ />

DBpedia
HTML http://dbpedia.org/ page /Daytona_Beach%2C_Florida
RDF http://dbpedia.org/ resource /Daytona_Beach%2C_Florida
The data source -- Wikipedia (HTML) http://en.wikipedia.org/wiki/Daytona_Beach,_Florida

DBpedia
“ The DBpedia knowledge base currently describes more than 2.6 million things, including at least…
213,000 persons
328,000 places
57,000 music albums
36,000 films
20,000 companies.”

DBpedia
Dbpedia is “a community effort to extract structured information from Wikipedia and to make this information available on the Web.”

Dbpedia (a taste)
dbpedia-owl:areaCode 386
dbpedia-owl: areaLand 152.0 (58.68)
dbpedia-owl:areaTotal 168.2 (64.93)
dbpedia-owl:areaWater 16.2 (6.25)
dbpedia-owl:elevation 9 (4)
dbpedia-owl:establishedTitle Incorporated
dbpedia-owl:foundingDate 1876-07

Dbpedia (a taste)
What the real data looks like…
<dbpedia-owl: areaLand rdf: datatype ="http://dbpedia.org/ontology/ squareKilometr e" xmlns:dbpedia-owl="http://dbpedia.org/ontology/">
152.0
</dbpedia-owl:areaLand>
<dbpedia-owl: areaLand rdf: datatype ="http://dbpedia.org/ontology/ squareMile " xmlns:dbpedia-owl="http://dbpedia.org/ontology/">
58.68
</dbpedia-owl:areaLand>

Dbpedia (a taste)
dbpprop:abstract
Daytona Beach is a city in Volusia County, Florida, USA. According to 2006 U.S. Census Bureau estimates, the city has a population of 64,421. Daytona Beach ... »more» (en)
Daytona Beach er en by i Volusia County i Florida i USA. I 2004 blev indbyggertallet opgjort til 64. 422 personer. Daytona er kendt som ferieby, og er ... »more» (da)
Daytona Beach (playa de Daytona) es un municipio de Florida en los Estados Unidos de América. Su población es de 67. 000 habitantes en 2004 y su principal ... »more» (es)
Daytona Beach ist eine Stadt an der Ostküste Floridas direkt am Atlantik in Volusia County. (de)

Dbpedia (a taste)
dbpprop:abstract
Daytona Beach on kaupunki Yhdysvalloissa Floridan osavaltiossa. Vuonna 2000 kaupungissa oli 64 122 asukasta, ja siellä kävi lähes kahdeksan miljoonaa turistia. ... »more» (fi)
Daytona Beach est une ville dans l’État de Floride, États-Unis. Au recensement de 2000, elle comptait 64 112 habitants et s’étendait sur près de 152 km², ... »more» (fr)
Daytona Beach è un comune degli Stati Uniti d'America, nella Contea di Volusia, nello stato della Florida. La città è conosciuta per il suo motorsport, ... »more» (it)

Dbpedia (a taste)
dbpprop:abstract
デイトナビーチ ( Daytona Beach) は、アメリカ合衆国フロリダ州ヴォルシア郡に位置する都市である。 2004 年現在、アメリカ合衆国統計局によって記録された人口見込みは 64,422 人である。デイトナビーチの広大な砂浜は、レース場やテストコースに最適であり、 1959 年にデイトナ・インターナショナル・スピードウェイが建設され使用されるようになるまで、全米のレーサーたちのメッカであった。レース場の近くにデイトナビーチ国際空港やエンブリ・リドル航空大学がある。 ... » more» (ja)
Daytona Beach is een plaats (city) in de Amerikaanse staat Florida, en valt bestuurlijk gezien onder Volusia County. (nl)

Dbpedia (a taste)
dbpprop:abstract
Daytona Beach - miasto w USA, w hrabstwie Volusia, w stanie Floryda, nad Oceanem Atlantyckim. Około 64,4 tys. mieszkańców. Rocznie przyjeżdża tu 8 mln. turystów. (pl)
Daytona Beach é uma cidade localizada no Estado americano de Flórida, no Condado de Volusia. Daytona Beach é sede da NASCAR, a maior associação automobilística do país. A cidade também sedia o principal circuito das competições da Stock Car norte-americana, o Daytona International Speedway. (pt)

Dbpedia (a taste)
dbpprop:abstract
Дейтона-Бич — город в штате Флорида, США. ( ru)
Daytona Beach är en ort i Volusia County i Florida i USA. 2004, uppgisk befolkningen till 64 422 personer. Daytona är en känd semesterort. Daytona är även ... »more» (sv)
代托纳比奇（ Daytona Beach ）是美国佛罗里达州沃卢西亚县的一座城市。根据 2000 年美国人口普查，代托纳比奇共有 64,112 人，其中白人占 62.33% 、非裔美国人占 32.75% 、亚裔美国人占 1.73% 。 ( zh)

Dbpedia (a taste)
rdfs:label
Daytona Beach, Florida (en)
Daytona Beach (da)
David Silverman (es)
Daytona Beach (es)
Daytona Beach (de)
Daytona Beach (fi)
Daytona Beach (fr)
Daytona Beach (it)

Dbpedia (a taste)
rdfs:label
デイトナビーチ ( ja)
Daytona Beach (nl)
Daytona Beach (pl)
Daytona Beach (pt)
Дейтона-Бич ( ru)
Daytona Beach, Florida (sv)
代托纳比奇 ( 佛罗里达州 ) ( zh)

Dbpedia (a taste)
is dbpprop:birthPlace of
dbpedia:Marshall_Teague
dbpedia:Bruce_McNorton
dbpedia:Christie_Wolf
dbpedia:Kenneth_C._Griffin
dbpedia:T._T._Toliver
dbpedia:Vince_Carter
dbpedia:George_McCloud
dbpedia:Hank_Mizell

Dbpedia (a taste)
is dbpprop:deathPlace of
dbpedia:Marshall_Teague
dbpedia:John_Morgan_Walden
dbpedia:Orville_E._Babcock
dbpedia:Luigi_Beccali
dbpedia:Paul_de_Bruyn
dbpedia:Charles_Martin_Hall
dbpedia:Bill_France%2C_Jr.
dbpedia:Halina_Konopacka

Dbpedia (a taste)
is dbpprop:headquarters of
dbpedia:Trans-Florida_Airlines
dbpedia:NASCAR
dbpedia:Grand_American_Road_Racing_Association

Dbpedia (a taste)
is dbpprop:location of
dbpedia:Amos_Kling_House
dbpedia:Bartholomew_J._Donnelly_House
dbpedia:Costa_Del_Mar
dbpedia:Jackie_Robinson_Ballpark
dbpedia:Mary_McLeod_Bethune_Home
dbpedia:Olds_Hall
dbpedia:Daytona_Beach_International_Airport
dbpedia:Embry-Riddle_Aeronautical_University%2C_Worldwide

Dbpedia (even more data)
owl:sameAs
Rdfabout: The 2000 U.S. Census http://www.rdfabout.com/rdf/usgov/geo/us/fl/counties/volusia_county/daytona_beach
GeoNames http://sws.geonames.org/4152872/
Freebase fbase:Daytona Beach, Florida

Some open questions
There are hundreds, if not thousands of people tracking down place names in Wikipedia and making sure they are normalized and geo-referenced.
Is this crowd-sourced, Wikipedia data ‘authoritative’?
Who is ‘David Silverman’ and why is he a Spanish label for Daytona Beach?

Some open questions
Chronicling America’s data for the Daytona Beach Daily News references Dbpedia but there’s no corresponding reference in Dbpedia, even though there’s a ‘place’ where it could be referenced.
How do we make sure that happens?
Where’s the library data anyway?

Some open questions
DBpedia uses it’s own vocabulary for many statements, chooses to use skos:subject instead of dc:subject, foaf:name instead of dc:title.
Was there a specific reason for this choice?
What’s the best way to make sure everyone can understand these choices?

Some open questions
Linking to Other People’s Data is great, but...
What happens if the linked data disappears?
What happens if it’s hijacked?
If I cache it locally to solve those problems, how does my system know to refresh the cache?
And other freshness-related questions…

Things I could be talking about…
If I had 2 more hours (at least) …
Flickr Commons
CommonTag
Google Fusion Tables
RDFa – indexed by Google & Yahoo
Dipity
Bibapp
Crowdsourcing
Mashups

Thanks!
Jon Phipps
Metadata Management Associates http://managemetadata.com [email_address] +1 (607) 216-4899
The Open Metadata Registry “A place to register and manage vocabularies” http://metadataregistry.org

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Embrace The Chaos

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