Freebase 101
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Freebase 101Kirrily Robert, August 2010
Thursday, August 19, 2010
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All of Freebasein 30 minutesand 73 slides.
Thursday, August 19, 2010
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Thursday, August 19, 2010
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A structured entity database.
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A structured databaseof people, places, and things.
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Freebase has many types of things
Thursday, August 19, 2010
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Freebase has many types of things
Thursday, August 19, 2010
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Freebase has many types of things
Thursday, August 19, 2010
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Freebase has many types of things
Thursday, August 19, 2010
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Freebase has many types of things
Thursday, August 19, 2010
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Freebase has many types of things
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12 Million Topics
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Connections between things
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education
nationality
contained-by
education
member-of
eventalbums
label
contained-by
contains
member-of
Connections between things
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education
nationality
contained-by
education
member-of
eventalbums
label
contained-by
contains
member-of
~400 Million
Connections between things
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Thursday, August 19, 2010
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Where does the data come from?
+
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What’s an entity?
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An entity is a singleperson, thing, or concept.
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Types and Properties
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Types = “is-a”
• Person
• Location
• Business
• Movie
• TV show
• Fictional character
• Winery
• Automobile model
• Airport
• Travel destination
• Ingredient
• Mountain
• Cause of death
• Political party
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Guy Ritchie is a...
• Person
• Film director
• Award winner
• Celebrity
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Properties = “has-a”
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Properties = “has-a”
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Properties of “person”
• gender
• date of birth
• place of birth
• profession
• nationality
• ethnicity
• parents
• children
• religion
• education
• employment history
• ... and more
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Freebase Schema
10,448 Properties
describing
4,936 Types*
organized into
641 Domains
(~70 Commons)
*types with 10 or more instancesThursday, August 19, 2010
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Domains
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Domains
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Domains
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Freebase Commons = 72 domains
American FootballArchitectureAstronomyAutomotiveAviationAwardsBaseballBasketballBicyclesBiologyBoatsBooksBroadcastBusinessCelebritiesChemistryComputersConferences
CricketData worldDigicamsEducationEngineeringEventsFashionFictional universesFilmFoodFreebaseGamesGeologyGovernmentHobbies and interestsIce hockeyInfluenceInternet
LanguageLawLibraryLocationMartial artsMeasurement unitMedia commonsMedicineMeteorologyMiltaryMusicOlympicsOperaOrganizationPeoplePeriodicalsPhysical geographyPhysics
Projects Protected placesRadioRailReligionRoyaltySoccerSpaceflightSportsSymbolsTennisTheaterTimeTransportationTravelTVVideo gamesVisual arts
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One entity, many types.
Politician/government/politician
Person/people/person
Film Actor/film/actor
is-a
is-a
is-a
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Commons: 72 domainsBases: 4000 domains
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Commons: 72 domainsBases: ~700 useful domains
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Bases = user-built domainsThursday, August 19, 2010
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Bases = user-built domainsThursday, August 19, 2010
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Summary viewThursday, August 19, 2010
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Table viewThursday, August 19, 2010
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Map viewThursday, August 19, 2010
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Timeline viewThursday, August 19, 2010
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Coming soon: Domains as projectsThursday, August 19, 2010
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But, back to entities...
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Every entity has one or more IDs
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Every entity has one or more IDs
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Topic IDs
• /en/guy_ritchie
• /m/0mm1q
• /wikipedia/en_id/91084
• /authority/imdb/name/nm0005363
• ... and more
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http://ids.freebaseapps.comThursday, August 19, 2010
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Developing applicationswith Freebase data
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MQL
• Metaweb Query Language
• Rhymes with “pickle”
• JSON format
• Query by example
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Querying Freebase
[{ "type": "/film/film", "id": null, "name": null}]
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Query results[{ "id": "/en/3_10_to_yuma_1957", "name": "3:10 to Yuma", "type": "/film/film"},{ "id": "/en/20_000_leagues_under_the_sea", "name": "20,000 Leagues Under the Sea", "type": "/film/film"},{ "id": "/en/2010_the_year_we_make_contact", "name": "2010: The Year We Make Contact", "type": "/film/film"},... and so on}]
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Querying Freebase
[{ "type": "/film/film", "id": null, "name": null}]
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Querying Freebase
[{ "type": "/film/film", "id": null, "name": null, "directed_by" : { "id": "/en/george_lucas" },}]
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Querying Freebase[{ "type": "/film/film", "id": null, "name": null, "directed_by" : { "id": "/en/george_lucas" }, "starring":[{ "actor": { "id":"/en/harrison_ford" } }]}]
Thursday, August 19, 2010
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Querying Freebase[{ "type": "/film/film", "id": null, "name": null, "directed_by" : { "id": "/en/george_lucas" }, "starring":[{ "actor": { "name": null, "film": [{ "film": { "id": "/en/the_great_escape" } }] } }]}]
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Drumroll, please![{ "directed_by": { "id": "/en/george_lucas" }, "id": "/en/thx_1138", "name": "THX 1138", "starring": [{ "actor": { "film": [{ "film": { "id": "/en/the_great_escape" } }], "name": "Donald Pleasence" } }]}]
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http://freebase.com/tools/queryeditorThursday, August 19, 2010
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REST API
mqlread read structured data
mqlwrite write structured data
search free text search
topic simplified topic data
... and more
http://freebase.com/docs/Thursday, August 19, 2010
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Libraries
• freebase-python (best supported):http://code.google.com/p/freebase-python
• other languages: http://wiki.freebase.com/wiki/Libraries
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Acre
Thursday, August 19, 2010
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App Editor (acre.freebase.com)Thursday, August 19, 2010
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App Editor (acre.freebase.com)Thursday, August 19, 2010
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Templating language
Thursday, August 19, 2010
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Freebase Suggest
• JQuery plugin
• Search Freebase entities
• Limit by Freebase type
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Freebase Suggesthttp://code.google.com/p/freebase-suggest/
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Data dumps
• TSV format (simplified for import into Excel)
• Triple format (full graph representation)
• Simple topic dump (basic information about every topic)
• http://download.freebase.com/
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Loading data
Thursday, August 19, 2010
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Wikipedia pipeline(one of many)
• Runs every 2 weeks
• Imports new topics
• Looks for structure in Wikipedia
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Thursday, August 19, 2010
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Thursday, August 19, 2010
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Quality Assurance
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Data quality
QAProcess
99%accuracy
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Reconciliation
“The Little Prince” ?
... the book?
... the movie?
... the opera?
... the episode of Lost?
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Human Judgements
RABJ(Redundant Array of Brains in a Jar)
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How YOU can load data
Thursday, August 19, 2010
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How YOU can load data
• mqlwrite
• Spreadsheet Loader
• Gridworks
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http://code.google.com/p/freebase-gridworks/Thursday, August 19, 2010
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http://code.google.com/p/freebase-gridworks/Thursday, August 19, 2010
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http://code.google.com/p/freebase-gridworks/Thursday, August 19, 2010
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http://matchmaker2.freebaseapps.com Thursday, August 19, 2010
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genderizer.freebaseapps.comThursday, August 19, 2010
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Freebase Community
• Schema development
• Data curation
• Data loads
• QA and human judgement
• Building apps
Thursday, August 19, 2010
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Freebase Community
• Freebase-discuss mailing listhttp://lists.freebase.com/
• Bug trackerhttp://bugs.freebase.com/
• Wiki (community documentation)http://wiki.freebase.com/
• IRCirc.freenode.net #freebase
Thursday, August 19, 2010
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Thursday, August 19, 2010