京都大学大学院情報学研究科社会情報学専攻の山本祐輔の学位論文「ウェブ情報の信憑性分析に関する研究」の公聴会発表資料である．

2. 43%
57 %
50
1 E. Sillence et al., Trust and mistrust of online health sites (CHI 2004)
2 S. Nakamura et al., Trustworthiness analysis of Web search results (ECDL 2007)

6. Q.

10. 1. 1. 2.
2. 1.
2.
3. 4.
3.
4. 3.
4.

12. 1 2 2

13. 1 B.J. Stiff, Persuasive communication, 2002
2 B.J.Fogg & H.Tseng. The elements of computer credibility. In CHI 99, 1999.

15. d 1t d 2t
d 11 d 21

16. d 1t d 2t
d 11 d 21
d 12 d 22
d 13 d 23

17. Cred( pt ) = Sup( pt , pk ) Cred( pk )
Cred( pt )
Sup( pt , pk )

18. Cred( pt ) = Sup( pt , pk ) Cred( pk )
Cred( pt )
Sup( pt , pk )

19. data1 data2 Answers
a1
Questions
di1 di2 Slug dies when salting. Why?
Slug does not die!
dissimilar answer
close close
q1
a2
Slug mainly consists of water.
similar question It loses important water when salted.
dj1 dj2 qt
Target data
at
similar answer
Why is slug melt Salt absorbs water from slug
when it is salted?
(a) for Dominance question
dissimilar answer
q2 a3
Slug is a type of snail? Snai is a different type from slug.
data2
News agency
data1 di2
article (text)
di1
Reuters(UK)
close distant
Ichiro is a super player
dj1
Target data pair
dj2 Super player Ichiro Kyodo Press(Japan)
(c) for Diversity Jiji Press(Japan)
Ichiro is not great
data1 data2
di1 di2
distant distant
dj1 dj2
(b) for Uniqueness

20. data1 data2
di1 di2
close close
dj1 dj2
(a) for Dominance
sup(pi , pj ) = α · supdom (pi , pj )
+β · supuni (pi , pj ) + γ · supdiv (pi , pj )
data1 data2 data2
di1 di2 data1 di2
di1
distant distant close distant
dj1
dj1 dj2 dj2
(b) for Uniqueness (c) for Diversity

21. A
B

22. sup dom ( pi , p j ) = sim entityname (oi , o j ) sim image (ii , i j )

23. sup uni ( pi , p j ) = (1 sim entityname (oi , o j )) (1 sim image (ii , i j ))

24. sup( pi , p j ) = 0.5 sup dom ( pi , p j ) + 0.5 sup uni ( pi , p j )

27. FALSE TRUE

28. 1 1

29. 1.
2.
3.
4.

31. 1. 1. 2.
2. 1.
2.
3. 4.
3.
4. 3.
4.

32. 5
–
–
–
–
–

33. 1.
2.
3.
4.

34. 1.
2.
3.
4.

35. 1.
2.
3.
4.

36. 1. 2.
2. 1.
3. 4.
4. 3.

37. 1. 2.
2. 1.
3. 4.
4. 3.

39. 960

40. 10 9

41. 10 9

42. 10 9

43. 10 9

45. 1. 1.
2. 2.
3.
VS. 3.
4. 4.

46. 1. 2
4. 1-3 10
1.
1.
2.
2.
3.
3.
4.
4.

47. 50
A B

48. 16 Only Google
Our system + Google
14
12
10
8
6
4
2
0
A B C D E F G H I J

49. 4 1 1 2

60. 20
–

61. 26.1

66. 1.
2.
3.
4.

67. 1.
2.
3.
4.

69. 6
– 5 4
– :
7
– Full paper 6 5
– Short paper
–
–
– DC2
– IPA