YouTube,??????????????????

1
????????????????????????????

• ?? ??,?? ??,?? ??,?? ??
• (????)

2
?????

• ?????????????????????
• YouTube,??????????????????

• ???????????????????
• ????????????????

• ??????????????
• ? ?????????????????

3
????
??? ???
?????
????
????
4
??????????
????????? ??????
12001,Taka 22001,Masumitsu
32006,Yamamoto 41994, Resnick
5
??????????

• ????????????????2006,Yamamoto
• ????????2????????
• ????????????,????????
• ??????????????????

?Neutral, Positive, Negative?3??????
???????????? ?EBGM????????????
?????????????????
6
????

• ????PC????????????????1????
• ?????????????
• PC?????????????????????

???????
7
?????????
?????
????
AdaBoost
????
?????
?????????????
8
AdaBoost????????

• Haar-like??????AdaBoost???,????????????.2001,Viol
  a
• ???????????,??????????????????
• EBGM????,????????????,???????

9
EBGM????????????
1997,Wiskott

• ???,?????????????Gabor??????????,??????????Jet???.
  
• ????????Jet??????????Face Graph???,??????????Face
  Graph???????????Bunch Graph???.
• Bunch Graph??????Face Graph????????,?????????,????
  ?????????.

10
SVM??????????

• EBGM????????,??????,???????????????????????.
• EBGM?????????34??????????,??????????????,68???????
  ??????????.
• Multiclass SVM(RBF????)?????????????.

11
????????(??)??
???? ??
Neutral (Neu) ???
Positive (Pos) ??,??,?,??
Negative (Neg) ??,??,??,??
Rejective (Rej) ???????????, ??????????, ???????,??
12
???????

• ???????????????????????????,Rejective???
• ???????????????,?????????????,??????????

Neutral
Positive
???????
Negative
Yes
?????
Rejective
No
13
????

• ???2?(A,B)?1??17??????????(???????)?4???????.
• ???,???????????,??????????????????????,15fps???.
• ???,??????????????????,??????????????.

14
????????????
?????????????????
Neu Pos Neg Rej ??
???A 49865 7665 3719 1466 62715
???B 56531 2347 3105 775 62758
??????????(?????)??????? ???????,???????????.
15
????1
????
AdaBoost
????
?????
?????????????
16
????1-AdaBoost????????

• ????????A,B???0???.
• ?????????,???????.

???A Neu Pos Neg
???? 20 3 1
?????? 49865 7665 3719
????() 0.0401 0.0391 0.0269

• ???B????,??????????????,?????????????????????.

???B Neu Pos Neg
???? 132 106 9
?????? 56531 2347 3105
????() 0.2335 4.5164 0.2899
17
????2
EBGM????????????????????
????
AdaBoost
????
?????
?????????????
18
????2-EBGM???????
???A Neu Pos Neg
???? 2 0 0
?????? 49845 7662 3718
????() 0.0040 0.0000 0.0000

• ??????????????????.

???B Neu Pos Neg
???? 2 20 0
?????? 56399 2241 3096
????() 0.0035 0.8925 0.0000
19
????
SVM???????????????????????
????
AdaBoost
????
?????
?????????????
20
????-SVM??????????

• ????????,4??3?(1?????1020?15fps15300????)???????
  ???,?????????????.???1???????????????.(??????????)
  
• ?????,????????????????????,??????????(precision)??
  ??(recall)????.

21
????-SVM??????????
22
??

• ??????87.6,??????88.0???????????.
• ????Positive?Negative???????,??????????????,?????N
  eutral?????????????.
• 1??????????????1??????????????,?????????????,?????
  ???.

23
????
24
?????????
EBGM?????????????,Neutral, Positive, Negative,
Rejective???4???????????,????????

• ???????????
• ???????
• ??????????
• ????????????????
• ???????????????????

25
-
26
????-Confusion matrix ???A
???A Neu Pos Neg Rej ?? ???()
Neu 48275 443 525 622 49865 96.81
Pos 743 6907 1 14 7665 90.11
Neg 356 107 3250 6 3719 87.39
Rej 135 0 5 1326 1466 90.45
?? 49509 7457 3781 1968 62715 91.19
???() 97.51 92.62 85.96 67.38 85.87
27
????-Confusion matrix ???B
???B Neu Pos Neg Rej ?? ???()
Neu 56068 138 264 61 56531 99.18
Pos 231 2076 8 32 2347 88.45
Neg 641 24 2402 38 3105 77.36
Rej 203 0 21 551 775 71.10
?? 57143 2238 2695 682 62758 84.02
???() 98.12 92.76 89.13 80.79 90.20