2. Suffix Array

4. ✓
✓Suffix Array
✓
✓

5. freshness
google

15. ✓
✓Suffix Array
✓
✓

16. WebDB Press Vol.53

17. Word Indexes vs Full-Text Indexes
Word Indexes
Full-Text Indexes

18. Word Indexes vs Full-Text Indexes
Word Indexes
more.....
Full-Text Indexes
n-gram
Suffix Array
more.....

20. 1.
2.
3. AKB48

21. 1.
2.
3. AKB48

22. 1.
2.
3. AKB48

23. 1.
2.
3. AKB48

25. n

26. n
NHK

27. n
NHK HK K
3-gram

28. 1.6

29. Java Lucene
Analyzer
CJKAnalyzer
(n-gram
JapaneseAnalyzer
(
※JapaneseAnalyzer sen

30. ※ →
abcde → abcde bcde cde de e

35. O(n^2 log n)
Compressed Suffix Array FM−Index

38. ✓
✓Suffix Array
✓
✓

39. Suffix Array
( O(n ^ 2) O(n ^ 3)

40. • Ternary QuickSort
• Doubling Algorithm(Manber, Myers)
• Doubling Algorithm(Larsson, Sadakane)
•

41. ※
pivot)
pivot

42. Ternary Quick Sort
O(n log n) O(n ^ 2)

43. Doubling Algorithm(Manber, Myers)
Radix Sort(
Radix Sort
※

44. Doubling Algorithm(Manber, Myers)
O(n log n)

45. Doubling Algorithm(Larsson, Sadakane)
Manber,Myers
Manber,Myers
Ternary QuickSort
O(n log n)

46. O(n)

47. 1.
type-A / type-B
[Type A] Si >1 S(i + 1) Si ※ BA Type-A
[Type B] Si <=1 S(i + 1) Si ※ AB Type-B
2.Type-B Ternary QuickSort
3. Type-A

48. ※
n n

50. • Ternary QuickSort
• Doubling Algorithm(Manber, Myers)
• Doubling Algorithm(Larsson, Sadakane)
•
• java.util.Arrays.sort (java API ※ )

51. 100
100,000
20

53. ( L&S > Ternary QuickSort)

54. PFI
http://homepage3.nifty.com/DO/suffix_array.htm

55. ✓
✓Suffix Array
✓
✓

56. Suffix Array
PFI Sedua Suffix
Array(CSA)

57. Suffix Array