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This document contains biographical information about Takahito Kuniyoshi, including his name, areas of interest in Android and data mining, and social media profiles. It also discusses several topics in text mining and clustering algorithms, including TF-IDF for weighting terms, calculating distance between documents, and leader-follower and k-means clustering methods.
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- 1. - - takahito kuniyoshi
- 2. ? name : takahito kuniyoshi ? Android / dataminning / ... ? twitter : @Taka_Kuni ? face book : takahito kuniyoshi ? blog : http://allex0421.blogspot.com/
- 3. 1. ? ? IT-IDF 2. ? leader-follower 3.
- 4. - - ? ? ex:
- 5. ? 1. 2.
- 7. ? ? ? a, the, are, is, ...
- 9. ? ? ? ? SMART system(Salton & McGill 1983)
- 10. ? ?
- 12. ? ?
- 13. ? ?
- 14. 30.0 29 25.0 24 23 20.0 15.0 15 14 10.0 8 7 5.0 0
- 15. ? TF-IDF ? TF : ? IDF : IDF
- 16. TF-IDF tfi,j : wi Di idfi : wi tf idf = tf ? idf ni,j tfi,j = k nk,j |n| idfi = log ni
- 17. ? dvt = ¦Ä(+t) ? ¦Ä(?t) 1 ¦Ä = N (N ?1) i=1 j=1(i=j) ¦Ò(di , dj ) ? ¦Ò(di , dj ) ? Dice Jaccard
- 18. ?
- 20. ? ? k-means, ? som,
- 21. k-means ? k-means ? ?
- 22. leader-follower ? k-means ? leader-follower
- 23. leader-follower ? 1. L¡û 2. i ¡û i+1 di N 3. di
- 25. ? ?
- 26. ? leader-follower ? SOM
- 27. name : takahito kuniyoshi twitter : @Taka_Kuni