A socially managed semantic database

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 Repository of Vocabulary
1500 types with 500+ instances!!
A range of of vocabularies....

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>

Repository of Identifiers
/en/ibm
/guid/9202a8c04000641f800000000001e168
NYSE: IBM
/business/cik/0000051143
/wikipedia/en_id/18622259
/wikipedia/en/IBM
/wikipedia/en/International_Business_Machines

8.6MM of these!
Po
liti
ca
rs
lC
arte
on
dqu
trib
ol
uti
Hea
b
K
on
ym
CI
Dat S
r
s
e Fou e
nde Ti ck
d
Founders CEO
IBM
SIC O
pe
ra
IC tin
Soft
NA s e g
diari
In
war
co
m
i
e De
Subs
e
velo
ped

Freebase as Switchboard
http://www.flickr.com/photos/jliba/

ID
d ia
Sto
ck i pe
Tic ik
k er W
IBM CIK
N
YT
im
es
To
pic
s
Follow any identifier in - take the others out

Working with Sets of Linked Data
Follow your nose
Search SQUIN
Have a Plan "know what you need"
Have a Strategy (extra credit)

A Problem
Country Name
?
Record Reviews for
bands from the country

A Plan
Country Name
WP IDs
DBPedia
MBz IDS
BBC
Record Reviews for
bands from the country

Plan Coordination

Blackboard Coordination
<output> <input>

Blackboard Coordination
SELECT ?x WHERE
{?s ?p ?o ...}

Working the Plan
DBpedia Country Name
SPARQL Query
Band's Freebase ID
Freebase
Freebase ID
Band's
MusicBrainz ID
MusicBrainz ID
BBC
Record
Reviews Record Reviews for
bands from the country

Reliability

Common Architecture
Model Model Controllers View
Manager
RePublishing
Engine
Service Ecosystem

Service Ecosystem

rel=license

Strong Identifiers
Strong Semantics
Open Data

Freebase in Service Ecosystem

sameas.freebase.com
GovTrack
0000051143
/en/ibm CIK

[{
"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"}
}]
MQL

[{
"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

[{
"id" : "/en/ibm",
"type" : "/business/company",
"industry":{"id":"/business/naics2007/5112"},
"founders": [{ }],
MQL
"/base/sameas/lod/data": [{ }] sameas.freebase.com
}]
GovTrack
/en/ibm CIK
"id" : "/en/ibm"
eMQL LOD Extension

Linked Data as "Leaf Data"
Photo by: http://www.flickr.com/photos/blmurch

Data Data
Linked Data allows
applications to access
Data
Entity Data using
uniform patterns
Data
Uniform Access to
Entity Data

The "last mile of data"