1. 2 Akiba Shinya 2015/06/04 2. 2 Latent Dirichlet Allocation -
- 2.4 LDA - 2.5 LDA 3. 4. playsong music band tennisplay eld run k
topic2topic1 topic2topic1 topic2topic1 d 1 2 3 topic1 topic2 5. d
zd,i wd,i k K M nd : M d: nd : K 1 2 3 6. d zd,i wd,i k K M nd d,
zd,i 1 1 topic2topic1 7. d zd,i wd,i k K M nd 1 playsong music band
music topic1 . 8. d zd,i wd,i k K M nd d, zd,i 1 1 music
topic2topic1 9. d zd,i wd,i k K M nd 1 music eld tennisplay eld run
topic2 . 10. d zd,i wd,i k K M nd d, zd,i 1 1 music eld
topic2topic1 11. d zd,i wd,i k K M nd 1 playsong music band music
eld song topic1 . wd,i 12. d zd,i wd,i k K M nd 1 music eld song 2
2 run 21. . wd,i 13. LDA 14. LDA gameplay music play music game A A
game game play 15. LDA gameplay music play music game A A game game
play 16. LDA gameplay music play music game gameplay music B A A
game game play B play music play 17. LDA gameplay music play music
game gameplay music B A 18. LDA gameplay music play music game
gameplay music B A - 2 1 19. LDA gameplay music play music game
gameplay music B A - 2 1 d d - d 20. LDA gameplay music play music
game gameplay music B A 2 1 d d 3 3 21. LDA 22. LDA - - - - 23. LDA
d v 24. LDA d v k v d k 25. LDA d v . - - 26. LDA - v, v d. car
-> k car automobile k 27. Bag of XXX LDA - Bag of Items: - Bag
of Ads: - Bag of Music: B. Marlin, Modeling User Rating Proles for
Collaborative Filtering, in Neural Information Processing Systems
15 (2003).
https://people.cs.umass.edu/~marlin/research/papers/urp-nips2003.pdf
word1 word2 word3 1 2 3 4 item1 item2 item3 1 2 3 4 Bag of ItemsBag
of words 28. LDA - - - 1 2 (SIFT) 11 12 21 (k-means) 3 2 4 1 BOW 2
BOW
