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ISWC 2009 Consuming LOD
A socially managed semantic database
ISWC 2009 Consuming LOD
ISWC 2009 Consuming LOD
Freebase has Many Types of Things
8,856,069 Topics
Freebase is user writable
Freebase: A Semantic Publishing Platform
http://www.freebase.com/view/en/washington_united_states
http://rdf.freebase.com/ns/en.washington_united_states
schema = vocabulary
A range of of vocabularies....
1500 types with 500+ instances!!
A Repository of Vocabulary
Freebase Schema in RDFS
http://rdfvocab.freebaseapps.com/fb2rdfs?domain=/film
<rdf:RDF>
<rdf:Description rdf:about="http://rdf.freebase.com/ns/film.film">
<rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
<label>Film</label>
</rdf:Description>
<rdf:Description rdf:about="http://rdf.freebase.com/ns/film.film.initial_release_date">
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
<label>Initial release date</label>
<domain rdf:resource="http://rdf.freebase.com/ns/film.film"/>
<range rdf:resource="http://rdf.freebase.com/ns/type.datetime"/>
</rdf:Description>
<rdf:Description rdf:about="http://rdf.freebase.com/ns/type.datetime">
<rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
<label>Date/Time</label>
</rdf:Description>
<rdf:Description rdf:about="http://rdf.freebase.com/ns/film.film.directed_by">
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
<label>Directed by</label>
<domain rdf:resource="http://rdf.freebase.com/ns/film.film"/>
<range rdf:resource="http://rdf.freebase.com/ns/film.director"/>
</rdf:Description>
<rdf:Description rdf:about="http://rdf.freebase.com/ns/film.director">
<rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
<label>Film director</label>
/guid/9202a8c04000641f800000000001e168
/business/cik/0000051143
/wikipedia/en_id/18622259
/wikipedia/en/IBM
/wikipedia/en/International_Business_Machines
/en/ibm
NYSE: IBM
Repository of Identifiers
8.6MM of these!
IBM
H
e
a
d
q
u
a
r
t
e
r
s
CEO
P
o
l
i
t
i
c
a
l
C
o
n
t
r
i
b
u
t
i
o
n
s
O
perating
Incom
e
Ticker Symbol
C
I
K
SIC
NAIC
Founders
Date Founded
S
u
b
s
i
d
i
a
r
i
e
s
S
o
f
t
w
a
r
e
D
e
v
e
l
o
p
e
d
Freebase as Switchboard
http://www.flickr.com/photos/jliba/
Follow any identifier in - take the others out
IBM
W
ikipedia
ID
CIK
Stock Ticker
N
Y
T
i
m
e
s
T
o
p
i
c
s
Working with Sets of Linked Data
Follow your nose
Search
Have a Plan
Have a Strategy
SQUIN
"know what you need"
(extra credit)
A Problem
?
Country Name
Record Reviews for
bands from the country
A Plan
Country Name
Record Reviews for
bands from the country
DBPedia
BBC
MBz IDS
WP IDs
Plan Coordination
Blackboard Coordination
<output> <input>
Blackboard Coordination
SELECT ?x WHERE
{?s ?p ?o ...}
Working the Plan
Country Name
Record Reviews for
bands from the country
SPARQL Query
Band's Freebase ID
DBpedia
Freebase ID
Band's
MusicBrainz ID
Freebase
MusicBrainz ID
Record
Reviews
BBC
Reliability
Common Architecture
Model
Manager
Model Controllers View
Service Ecosystem
RePublishing
Engine
Service Ecosystem
rel=license
Strong Identifiers
Strong Semantics
Open Data
Freebase in Service Ecosystem
ISWC 2009 Consuming LOD
/en/ibm
sameas.freebase.com
CIK
0000051143
GovTrack
MQL
[{
"name" : null,
"type" : "/business/company"
}]
MQL
[{
"name" : null,
"type" : "/business/company",
"industry":"Computer software"
}]
MQL
[{
"name" : null,
"type" : "/business/company",
"industry":{"id":"/en/computer_software"}
}]
MQL
[{
"name" : null,
"type" : "/business/company",
"industry":{"id":"/business/naics2007/5112"}
}]
[{
"name" : null,
"type" : "/business/company",
"industry":{"id":"/business/naics2007/5112"},
"founders": [ ]
}]
MQL
[{
"name" : null,
"type" : "/business/company",
"industry":{"id":"/business/naics2007/5112"},
"founders": [{ }]
}]
MQL
[{
"name" : null,
"type" : "/business/company",
"industry":{"id":"/business/naics2007/5112"},
"founders": [{ }],
"/base/sameas/lod/data": [{ }]
}]
eMQL - MQL Extensions
[{
"id" : "/en/ibm",
"type" : "/business/company",
"industry":{"id":"/business/naics2007/5112"},
"founders": [{ }],
"/base/sameas/lod/data": [{ }]
}]
eMQL - MQL Extensions
eMQL LOD Extension
[{
"id" : "/en/ibm",
"type" : "/business/company",
"industry":{"id":"/business/naics2007/5112"},
"founders": [{ }],
"/base/sameas/lod/data": [{ }]
}]
/en/ibm CIK
GovTrack
sameas.freebase.com
MQL
"id" : "/en/ibm"
ISWC 2009 Consuming LOD
ISWC 2009 Consuming LOD
Linked Data as "Leaf Data"
Photo by: http://www.flickr.com/photos/blmurch
Uniform Access to
Entity Data
Data
Data
Data
Data
Linked Data allows
applications to access
Entity Data using
uniform patterns
The "last mile of data"
ISWC 2009 Consuming LOD

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ISWC 2009 Consuming LOD