Freebase - Semantic Technologies 2010 Code Camp

Freebase A socially managed semantic database Jamie Taylor SemTech 2010 Data Camp

Freebase has Many Types of Things

12 Million Topics

A Multiplicity Strong Identiﬁers http://rdf.freebase.com/ns/en.berlin_wall http://www.ellerdale.com/topics/view/0080-6ba0 http://www.bbc.co.uk/music/artists/7f347782-eb14-40c3-98e2-17b6e1bfe56c http://musicbrainz.org/artist/7f347782-eb14-40c3-98e2-17b6e1bfe56c http://rdf.freebase.com/ns/authority.musicbrainz.7f347782-eb14-40c3-98e2-17b6e1bfe56c

Relations contains 400 Million contained-by event label albums member-of member-of nationality education education contained-by

What’s in Freebase?

http://www.bestbuy.com/site/She+Wolf… http://www.daylife.com/topic/Shakira http://twitter.com/shakira http://www.facebook.com/shakira http://www.myspace.com/shakira http://www.last.fm/music/Shakira http://www.netflix.com/RoleDisplay/Shakira/20046629 http://www.guardian.co.uk/music/shakira

99% pure All data undergoes rigorous QA before load Major focus is reconciliation Use sampling to assure 99% accuracy Data that does not meet 99% accuracy is not loaded

What's been built on Freebase?

Up to 100,000 Queries a Day Quarterly dumps of graph http://download.freebase.com

Users contribute data Users extend the data model

The Freebase Commons Top-level domains ·American football ·Internet ·Anime/Manga ·Language ·Architecture ·Law ·Astronomy ·Library ·Automotive ·Location ·Aviation ·Martial Arts ·Awards ·Measurement Unit ·Baseball ·Media Common ·Basketball ·Medicine ·Bicycles ·Metaweb Types ·Biology ·Meteorology ·Boats ·Military ·Broadcast ·Music ·Business ·Olympics ·Celebrities ·Opera ·Chemistry ·Organization ·Comics ·People ·Common ·Geography ·Computers ·Projects ·Conferences ·Protected Places ·Cricket ·Publishing ·Data World ·Radio ·Digicams ·Rail ·Education ·Religion ·Engineering ·Royalty ·Event ·Soccer ·Clothing and Textiles ·Spaceflight ·Fictional Universes ·Sports ·Film ·Symbols ·Food & Drink ·Tennis ·Freebase ·Theater ·Games ·Time ·Geology ·Transportation schema = vocabulary ·Government ·Travel ·Hobbies and Interests ·TV ·Ice Hockey ·Video Games ·Influence ·Visual Art

The Scope of Schema 10,448 Properties describing 4,936 Types* organized into 641 Domains (77 Commons) *types with 10 or more instances

Strength through Exemplars Type Instances 100,000,000 10,000,000 >10 instances, 1,000,000 100,000 4936 types Instances 10,000 1,000 1424 Commons 100 10 1 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 Rank

Metaweb Query Language [{ "name" : null, "type" : "/ﬁlm/ﬁlm" }] MQL

[{ "name" : null, "type" : "/ﬁlm/ﬁlm", "directed_by":{"id":"/en/george_lucas"}, "starring":[{ "actor":{"id":"/en/harrison_ford"} }] }] MQL

[{ "name" : null, "type" : "/film/film", "directed_by":{"id":"/en/george_lucas"}, "starring": [{ "actor": { "name": null, "film": [{ "film": {"id": "/en/the_great_escape"} }] } }] }] Donald Pleasence THX 1138

Freebase Suggest

Reconciliation { "/type/object/name":"Blade Runner", "/type/object/type":"/film/film", "/film/film/starring/actor":["Harrison Ford", "Rutger Hauer"], "/film/film/director":"Ridley Scott", "/film/film/release_date_s":"1981" } [{ "id":"/guid/9202a8c04000641f8000000000009e89", "name":["Blade Runner", "Bladerunner"], "score":1.4320519, "match":true, "type":["/common/topic", "/film/film","/media_common/adapted_work", "/award/award_winning_work", ]}, { "id":"/guid/9202a8c04000641f80000000002643d0", "name":["Blade"], "score":0.48852453, "match":false, "type":["/common/topic", "/film/film", "/award/award_winning_work", "/award/award_nominated_work", ]} http://data.labs.freebase.com/recon/

Topic Blocks

Topic API Shortcut to building Topic displays Two forms: basic (names, types, description) standard (basic + keys, properties) http://www.freebase.com/experimental/topic/standard?id=/en/ncis

Geo Search API Semantic Spatial Semantic http://www.freebase.com/docs/geosearch

Gridworks

Acre Development Environment

Getting Started++ • Freebase Documentation Hub • http://www.freebase.com/docs • Developer Mailing List • http://lists.freebase.com/mailman/listinfo/freebase-discuss • http://freebase.markmail.org • Real Time help on IRC • Freenode #freebase • Freebase Happenings • http://blog.freebase.com • About the Graph Store • Google: "ACM SIGMOD schema last tuple store"

Freebase - Semantic Technologies 2010 Code Camp

by Jamie Taylor on Jun 23, 2010

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Freebase - Semantic Technologies 2010 Code Camp — Presentation Transcript