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WikiNet: a very large-scale multi-lingual concept network Vivi Nastase, Michael Strube HITS gGmbH Benjamin B ö rschinger, C ä cilia Zirn University of.

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Presentation on theme: "WikiNet: a very large-scale multi-lingual concept network Vivi Nastase, Michael Strube HITS gGmbH Benjamin B ö rschinger, C ä cilia Zirn University of."— Presentation transcript:

1 WikiNet: a very large-scale multi-lingual concept network Vivi Nastase, Michael Strube HITS gGmbH Benjamin B ö rschinger, C ä cilia Zirn University of Heidelberg Anas Elghafari University of T ü bingen

2 2 Democratic Senator Barack Obama has been elected the first black president of the United States, prompting celebrations across the country. "It's been a long time coming, but tonight... change has come to America," the president- elect told a jubilant crowd at a victory rally in Chicago. His rival John McCain accepted defeat, and called on his supporters to lend the next president their goodwill.

3 3 Democratic Senator Barack Obama has been elected the first black president of the United States, prompting celebrations across the country. "It's been a long time coming, but tonight... change has come to America," the president- elect told a jubilant crowd at a victory rally in Chicago. His rival John McCain accepted defeat, and called on his supporters to lend the next president their goodwill.

4 4 Democratic Senator Barack Obama has been elected the first black president of the United States, prompting celebrations across the country. "It's been a long time coming, but tonight... change has come to America," the president- elect told a jubilant crowd at a victory rally in Chicago. His rival John McCain accepted defeat, and called on his supporters to lend the next president their goodwill.

5 5 Democratic Senator Barack Obama has been elected the first black president of the United States, prompting celebrations across the country. "It's been a long time coming, but tonight... change has come to America," the president- elect told a jubilant crowd at a victory rally in Chicago. His rival John McCain accepted defeat, and called on his supporters to lend the next president their goodwill.

6 6 Democratic Senator Barack Obama has been elected the first black president of the United States, prompting celebrations across the country. "It's been a long time coming, but tonight... change has come to America," the president- elect told a jubilant crowd at a victory rally in Chicago. His rival John McCain accepted defeat, and called on his supporters to lend the next president their goodwill.

7 7 Democratic Senator Barack Obama has been elected the first black president of the United States, prompting celebrations across the country. "It's been a long time coming, but tonight... change has come to America," the president- elect told a jubilant crowd at a victory rally in Chicago. His rival John McCain accepted defeat, and called on his supporters to lend the next president their goodwill.

8 8 Democratic Senator Barack Obama has been elected the first black president of the United States, prompting celebrations across the country. "It's been a long time coming, but tonight... change has come to America," the president- elect told a jubilant crowd at a victory rally in Chicago. His rival John McCain accepted defeat, and called on his supporters to lend the next president their goodwill.

9 9 Democratic Senator Barack Obama has been elected the first black president of the United States, prompting celebrations across the country. "It's been a long time coming, but tonight... change has come to America," the president- elect told a jubilant crowd at a victory rally in Chicago. His rival John McCain accepted defeat, and called on his supporters to lend the next president their goodwill.

10 10 Barack Obama his United States America president president-elect

11 11 Barack Obama his United States America president president-elect

12 12 Barack Obama his United States America president president-elect country is a senator ( ) ‏ Chicago part of

13 13 Making knowledge accessible to computers

14 14 The many facets of Wikipedia

15 15

16 16

17 17

18 18 The many facets of Wikipedia Articles Categories Category-category links Article-category links Hyperlinks, redirects, disambiguation links Anchor texts Cross-language links Infoboxes Article structure Edits and more

19 19 and now let's restructure (some of) this for machine consumption

20 20 The category and article network

21 21 – explicit relations Prime Ministers of New Zealand, Movies directed by Woody Allen – partly explicit relations Villages in Brandenburg, Conflicts in 2000 – implicit relations Mixed martial arts television programs – class attributes Albums by artist, Books by genre Wikipedia categories encode knowledge

22 22 Deconstructing categories

23 23 Deconstructing categories

24 24 Deconstructing Wikipedia categories Apply patterns to parsed structure: – Queen (band) members, Chancellors of Germany: Rel Cx, Cx Rel – Films directed by Woody Allen: Cy [VBN IN] Cx – Villages in Brandenburg: Cy [IN] Cx – Albums by artist: Cy by Cx – Mixed martial arts television programs: Cx 1 Cx 2 … Cx n

25 25 Deconstructing categories → explicit relation categories: Cy Rel ‏ Queen (band) members Freddy Mercury Brian May John Deacon Roger Taylor Queen (band) Freddy Mercury Brian May John Deacon Roger Taylor members

26 26 Deconstructing categories → explicit relation categories: Cy [VBN IN] Cx‏ Movies Woody Allen Annie Hall Deconstructing Harry The Scoop … isa directed by Movies directed by Woody Allen Annie Hall Deconstructing Harry The Scoop …

27 27 Deconstructing categories  partly explicit relations Cy [IN] Cx Villages in Brandenburg Siethen Goerden Villages Siethen Goerden Brandenburg isa located-in Geography spatial

28 28 Deconstructing categories  by categories: Cx by Cy attribute

29 29

30 30 Category and articles network + deconstructed categories

31 31 How good is it?

32 32 Some issues Relations that are too general – Military equipment of the Soviet Union → spatial Unnamed relations – science fiction novels

33 33 Some issues

34 34 Category name ↔ infobox relation/attribute link established for 42,060 categories Propagated to 698,929 previously induced relations

35 35

36 36 A fter: Starting with category-article network Deconstructing categories Propagating infobox relations Mapping all these onto concepts

37 37

38 38 A fter: Starting with category-article network Deconstructing categories Propagating infobox relations Mapping all these onto concepts Adding cross-language links

39 39

40 40

41 41 A fter: Adding category-article network Deconstructing categories Propagating infobox relations Mapping all these onto concepts Adding cross-language links Adding some disambiguating pages we obtain...

42 42 WikiNet – a multi-lingual concept network

43 43 WikiNet – a multi-lingual concept network A multi-lingual index - maps terms to ids

44 44 WikiNet – a multi-lingual concept network A reversed index file to map ids to terms

45 45 WikiNet – a multi-lingual concept network A list of named relations between ids

46 46 WikiNet – a multi-lingual concept network A list of co-occurrence relations between ids

47 47 WikiNet Approx 3 million concepts Multilingual access Paraphrases and variants Approx 36 ( ) million relations

48 48 WikiNet Language stats: – En: 3,347,712 – Fr: 498,811 – De: 459,697 – It: 368,529 – Tr: 83,239 – Bg: 55,068...

49 49 What's next: Fill in cross-language gaps Add more concepts – identify texts that contain concepts we don't know about and extract the knowledge Add more relations Article – article links Novel relations from texts Add organization Get inspiration from Cyc!

50 50... and also: Build a tool kit for use with WikiNet: Link texts to WikiNet Various computations (relatedness, similarity, associations)‏

51 51... and also: Put the resource and toolkit to use: Summarization Metonymy resolution CoSyne – content synchronization of wiki pages

52 52 Thank you!

53 53 Thank you!

54 54 Connecting

55 55 Category links

56 56 Collaborative projects on the web: Open Mind Common Sense (Push Singh)‏ Mindpixel(Chris McKinstry)‏ How to break the knowledge acquisition bottleneck?


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