1. Introduction to Freebase
Kou yubo
Web组

2. Outline What is Freebase Architecture
Difference from wikipedia and google base
discussion

3. Outline What is Freebase Architecture
Difference from wikipedia and google base
discussion

4. Freebase an open, shared database of the world's knowledge start from 2007.3.9
www. freebase.com
Its information comes from:
1, large open data sets like Wikipedia, MusicBrainz,….
2, a global community of users
FreeBase的目标是收集和整理世界上所有的信息。
简单说，Freebase是个类似wikipedia的创作共享类网站，所有内容都由用户添加，采用创意共用许可证，可以自由引用。
两者之间最大的不同在于，Freebase中的条目都采用结构化数据的形式，而wikipedia不是。

5. Domain: art & entertainment,…... Type: film, Topic: brave heart,….
Concept:
Domain: art & entertainment,…...
Type: film,
Topic: brave heart,….
System Stats
Topics: 2,312,676
Types:765
Domains: 61
System Stats
Topics: 3,958,698
Types: 4,289
Domains: 98
Freebase的核心功能就是为每一类条目（Type）定义了一套元数据。 Freebase最强大的地方就在于，它里面的元数据是可变的，具有弹性。

6. Users of Freebase can… Browse Search Creat topic , type and domain
Creat & modify schema
Build applications

7. Users of Freebase can… Browse Search Creat topic , type and domain
Creat & modify schema
Build applications

12. Users of Freebase can… Browse Search Creat topic, type and domain
Creat & modify schema
Build applications

13. 可以对domain, type或topic进行关键词搜索

15. Users of Freebase can… Browse Search Creat topic , type and domain
Creat & modify schema
Build applications

17. Users of Freebase can… Browse Search Creat topic , type and domain
Creat & modify schema
Build applications

18. 在我自己建立的domain和type下，我可以修改添加或删除属性。对于公共type，无权限进行属性删改的操作

19. Users of Freebase can… Browse Search Creat topic , type and domain
Creat & modify schema
Build applications

20. Building Applications

21. Freebase developed its own query language :MQL
For example:
what albums The Police have recorded?

22. An application: history of a day

23. Outline What is Freebase Architecture
Difference from wikipedia and google base
discussions

24. Freebase tame the vast graph of knowledge
by defining a manageable object-oriented
view of it.

28. Freebase view the graph through an object-oriented lens
Arnold
sex: male
birthdate: 1947-July-30
country of birth: Austria
political party: Republican
film: Conan the Barbarian
film: Terminator
film: Kindergarten Cop
elected office: Governor of California

29. Arnold as Person
Sex sex: male
Date birthdate: 1947-July-30 Country birthplace: Austria
Arnold as Politician
Electedoffice office: Governor of CA
Arnold as Actor
Set of Film film: [Conan the Barbarian, Kindergarten Cop, Terminator]

30. Outline What is Freebase Architecture
Relationship with wikipedia and google base
discussion

31. The relationship between freebase and wikipedia: both appeal to people who love to use and organize information The difference lies in the way they store information: Wikipedia arranges information in the form of articles. Freebase lists facts and statistics. Example: key word:beijing

32. The difference between Freebase and google base:
Full of ads
Google base限制用户只能创建一定类型的数据，而且属性都是确定由用户填写的。

33. 1, Freebase is much more feasible
1, Freebase is much more feasible. It is dedicated to build a database of knowledge
2, Google base unify user input for search.
An approach to semantic web?
An e-commerce platform?
Too early to predict?

34. Outline What is Freebase Architecture
Difference from wikipedia and google base
discussion

35. Discussion： 1、compared with wikipedia, does freebase
provide more information?
2、too complicated for users
3、objects need to be reconciled
4、a rich resource for research
5、a world dataspace?

36. Thanks