[B! trie] fubaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

fuba id:fuba

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trieã«é–¢ã™ã‚‹fubaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (7)

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Double-Array
ãƒ€ãƒ–ãƒ«é…åˆ—ï¼ˆ Double-Array ï¼‰ã¯ï¼Œ ãƒˆãƒ©ã‚¤ï¼ˆ Trie ï¼‰ã®ãƒ‡ãƒ¼ã‚¿æ§‹é€ ã®ä¸€ç¨®ã§ã‚ã‚Šï¼Œ å°ã•ã„è¾žæ›¸ã§é«˜é€Ÿã«æ¤œç´¢ã§ãã‚‹ã¨ã„ã†ç‰¹é•·ã‚’æŒã£ã¦ã„ã¾ã™ï¼Ž å®Ÿéš›ã«ï¼ŒèŒ¶çŒï¼ˆ ChaSen ï¼‰ã‚„ å’Œå¸ƒè•ªï¼ˆ MeCab ï¼‰ãªã©ã® å½¢æ…‹ç´ è§£æžå™¨ã§åˆ©ç”¨ã•ã‚Œã¦ã„ã‚‹ã¨ã„ã†å®Ÿç¸¾ãŒã‚ã‚Šã¾ã™ï¼Ž ãƒ€ãƒ–ãƒ«é…åˆ—ã§ã¯ï¼Œé…åˆ—ã‚’ä½¿ã£ã¦ãƒˆãƒ©ã‚¤ã‚’è¡¨ç¾ã—ã¾ã™ï¼Ž é…åˆ—ã®å„è¦ç´ ãŒ BASE, CHECK ã¨ã„ã†äºŒã¤ã®æ•´æ•°ã‚’æŒã¤ã®ã§ï¼Œé æ–‡å—ã‚’ã¨ã£ã¦é…åˆ— BC ã¨å‘¼ã¶ã“ã¨ã«ã—ã¾ã™ï¼Ž ä»¥é™ã®èª¬æ˜Žã§ã¯ï¼Œé…åˆ— BC ã®è¦ç´ x ã® BASE, CHECK ã‚’ ãã‚Œãžã‚Œ BC[x].BASE, BC[x].CHECK ã¨è¨˜è¿°ã—ã¾ã™ï¼Ž é€šå¸¸ï¼ŒBASE, CHECK ã¯å€‹åˆ¥ã®é…åˆ—ã¨ã—ã¦ç´¹ä»‹ã•ã‚Œã¾ã™ãŒï¼Œ ç‰¹ã«åˆ†å‰²ã—ã¦è€ƒãˆã‚‹å¿…è¦ãŒãªã„ã®ã§ï¼Œã“ã®ã‚ˆã†ãªèª¬æ˜Žã«ã—ã¾ã—ãŸï¼Ž åŸºæœ¬çš„ã«ï¼Œé…åˆ— BC ã®å„è¦ç´ ã¯ ãƒˆãƒ©ã‚¤ã®ç¯€ã¨ä¸€å¯¾ä¸€ã§å¯¾å¿œã—ã¾ã™ï¼Ž ãã®ãŸã‚ï¼Œå¯¾å¿œã™ã‚‹
fuba 2011/04/28
trie

algorithm
ãƒªãƒ³ã‚¯
Trie
ãƒˆãƒ©ã‚¤ï¼ˆ Trie ï¼‰ã¨ã¯ï¼Œ è‡ªç„¶è¨€èªžå‡¦ç†ã‚„ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ï¼Œãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚°ãªã©ã«ç”¨ã„ã‚‰ã‚Œã¦ã„ã‚‹æœ¨æ§‹é€ ã§ã™ï¼Ž äºŒåˆ†æŽ¢ç´¢æœ¨ãªã©ã¨ã¯ç•°ãªã‚Šï¼Œæ–‡å—å˜ä½ã§æŽ¢ç´¢ãŒé€²è¡Œã™ã‚‹ã®ã§ï¼Œ å…¥åŠ›æ–‡å—åˆ—ã®å‰æ–¹éƒ¨åˆ†ã¨ä¸€è‡´ã™ã‚‹ã‚ãƒ¼ã‚’åˆ—æŒ™ã—ãŸã‚Šï¼Œ ã©ã®æ–‡å—ã¾ã§æŽ¢ç´¢ã«æˆåŠŸã—ã¦ã„ãŸã‹ã¨ã„ã†æƒ…å ±ã‚’å–å¾—ã—ãŸã‚Šã§ãã¾ã™ï¼Ž ã¾ãŸï¼Œã‚ãƒ¼æ•°ã®å¢—åŠ ã«ã‚ˆã£ã¦æ¤œç´¢é€Ÿåº¦ãŒé…ããªã‚Šã«ãã„ã¨ã„ã†ç‰¹å¾´ã‚‚ã‚ã‚Šã¾ã™ï¼Ž ãƒˆãƒ©ã‚¤ã¯æ–‡å—åˆ—ã‚’æ ¼ç´ã™ã‚‹ã®ã«é©ã—ãŸæœ¨æ§‹é€ ã§ã™ï¼Ž ãƒˆãƒ©ã‚¤ã®ç¯€ï¼ˆ Node ï¼‰ã‚ã‚‹ã„ã¯ æžï¼ˆ Arc ï¼‰ã«ã¯ æ–‡å—ãŒä»˜ä¸Žã•ã‚Œã¦ã„ã¦ï¼ˆ Label ï¼‰ï¼Œ æ ¹ï¼ˆ Root ï¼‰ã‹ã‚‰ è‘‰ï¼ˆ Leaf ï¼‰ã¸ã® çµŒè·¯ï¼ˆ Path ï¼‰ä¸Šã®æ–‡å—ã‚’é€£çµã™ã‚‹ã“ã¨ã«ã‚ˆã‚Šï¼Œ ç™»éŒ²ã•ã‚Œã¦ã„ã‚‹æ–‡å—åˆ—ã‚’å¾©å…ƒã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ï¼Ž ä¾‹ãˆã°ï¼Œä¸‰ã¤ã®æ–‡å—åˆ— "bird", "bison", "cat" ã‚’ç™»éŒ²ã—ãŸãƒˆãƒ©ã‚¤ã¯ä»¥ä¸‹ã®ã‚ˆã†ã«ãªã‚Šã¾ã™ï¼Ž å›³ä¸ã®ç¯€ã«ã¤ã„ã¦ã„ã‚‹ç•ªå·ã¯ï¼Œã™ã¹ã¦ã®ç¯€ã‚’ä¸€
fuba 2011/04/28
trie

algorithm
ãƒªãƒ³ã‚¯
Darts: Double ARray Trie System
Darts: Double-ARray Trie System ã¯ã˜ã‚ã« Darts ã¯, Double-Array [Aoe 1989]ã‚’æ§‹ç¯‰ã™ã‚‹ãŸã‚ã® ã‚·ãƒ³ãƒ—ãƒ«ãª C++ Template Library ã§ã™. Double-Array ã¯ Trie ã‚’è¡¨ç¾ã™ã‚‹ãŸã‚ã®ãƒ‡ãƒ¼ã‚¿æ§‹é€ ã§ã™. ãƒãƒƒã‚·ãƒ¥æœ¨, ãƒ‡ã‚¸ã‚¿ãƒ«ãƒˆãƒ©ã‚¤, ãƒ‘ãƒˆãƒªã‚·ã‚¢æœ¨, Suffix Array ã«ã‚ˆã‚‹æ“¬ä¼¼ Trieã¨ã„ã£ãŸ ä»–ã® Trie ã®å®Ÿè£…ã«æ¯”ã¹é«˜é€Ÿã«å‹•ä½œã—ã¾ã™. ã‚ªãƒªã‚¸ãƒŠãƒ« ã® Double-Arrayã¯, å‹•çš„ã« key ã®è¿½åŠ å‰Šé™¤ã‚’è¡Œãˆã‚‹ã‚ˆã†ãª æž çµ„ã§ã™ãŒ, Darts ã¯ ã‚½ãƒ¼ãƒˆæ¸ˆã®è¾žæ›¸ã‚’ä¸€æ‹¬ã—ã¦Double-Array ã«å¤‰æ›ã™ã‚‹ã“ã¨ã«æ©Ÿèƒ½ã‚’çµžã£ã¦ã„ã¾ã™. ãƒãƒƒã‚·ãƒ¥ã®ã‚ˆã†ãªå˜ç´”ãªè¾žæ›¸ã¨ã—ã¦ä½¿ã†ã“ã¨ã‚‚å¯èƒ½ã§ã™ãŒ, å½¢æ…‹ç´ è§£æžå™¨ã®è¾žæ›¸ã«å¿…é ˆã® Common Prefix Search ã‚’éžå¸¸ã«é«˜é€Ÿã«è¡Œã†ã“ã¨ãŒ
fuba 2011/04/28
c++

trie
ãƒªãƒ³ã‚¯
Engineering the LOUDS Succinct Tree Representation - å°„æ’ƒã—ã¤ã¤å‰è»¢ æ”¹
Engineering the LOUDS Succinct Tree Representation(O. Delpratt et al., 2006)ã‚’èªã‚“ã ã€‚ãƒ¢ãƒãƒ™ãƒ¼ã‚·ãƒ§ãƒ³ã¨ã—ã¦ã¯Txã®å®Ÿè£…ã£ã¦ã©ã†ã„ã†é¢¨ã«ãªã£ã¦ã‚‹ã®ã‹ãŒçŸ¥ã‚ŠãŸã‹ã£ãŸã¨ã„ã†ã®ãŒã‚ã‚‹ã€‚ LOUDSã¨ã„ã†ã®ã¯é †åºæœ¨ã‚’åŠ¹çŽ‡çš„ã«å®Ÿè£…ã™ã‚‹ãŸã‚ã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã§ã€ã“ã®è«–æ–‡ã§ã¯ã•ã‚‰ã«ãã‚Œã‚’æ”¹è‰¯ã—ãŸLOUDS++ã¨ã„ã†ã®ã‚’å®Ÿè£…ãƒ»ææ¡ˆã—ã¦ã„ã‚‹ã€‚ åŸºæœ¬çš„ãªã‚¢ã‚¤ãƒ‡ã‚¢ã¯ã€æœ¨ã®ä¸Šã®æ–¹ã‹ã‚‰ã€ãƒŽãƒ¼ãƒ‰ã«å˜åœ¨ã™ã‚‹åãƒŽãƒ¼ãƒ‰ã®æ•°ã ã‘1ã‚’ä¸¦ã¹ã‚‹ã€‚ãƒ‡ãƒªãƒŸã‚¿ã¯0ã€‚ï¼ˆã¾ãã€1ã¨0ãŒé€†ã§ã‚‚ã„ã„ã‚“ã ã‘ã©ã€‚ï¼‰ãã†ã™ã‚‹ã¨ã€ãã‚Œãžã‚Œã®1ã¨ãƒŽãƒ¼ãƒ‰ã®å¯¾å¿œãŒå–ã‚Œã‚‹ã‚ˆã†ã«ãªã‚‹ã€‚ã“ã®ãƒ“ãƒƒãƒˆåˆ—ã‚’LBSã¨å‘¼ã¶ã€‚LBSã«å¯¾ã—ã¦is_leaf, parent, next_siblingãªã©ã®é–¢æ•°ãŒå®Ÿè£…ã§ãã‚Œã°é †åºæœ¨ãŒå®Ÿç¾ã§ãã‚‹è¨³ã ã‘ã©ã€ã“ã‚Œã‚‰ã®é–¢æ•°ã¯ãã‚Œãžã‚Œæ•°å€‹ã®rank, selectæ“ä½œã§å®Ÿ
fuba 2009/12/25
algorithm

trie

louds
ãƒªãƒ³ã‚¯
perl - Text::Tx now released! : 404 Blog Not Found
2009å¹´02æœˆ22æ—¥00:15 ã‚«ãƒ†ã‚´ãƒª perl - Text::Tx now released! ä»¥å‰ä½œã£ã¦æ”¾ç½®ã—ã¦ã‚ã£ãŸText::Tx ã‚’ã€CPAN ã«ã‚‚ Release ã—ãŸã®ã§ãŠçŸ¥ã‚‰ã›ã—ã¾ã™ã€‚ /lang/perl/Text-Tx/L/trunk - CodeRepos::Share - Trac Dan Kogai / Text-Tx/ - search.cpan.org http://www.dan.co.jp/~dankogai/cpan/Text-Tx-0.02.tar.gz 404 Blog Not Found:perl - Text::Tx ã‚‚ä¸€å¿œä½œã£ãŸ CPANã«ã¾ã ä¸Šã’ãªã„ç†ç”±ãã®ä¸€ã€‚txã¯libraryã¨ã—ã¦ç´ ç›´ã«ä½¿ã†ã«ã¯ã¡ã‚‡ã£ã¨å•é¡ŒãŒã‚ã‚‹ã®ã§ã™ã€‚ ã‚‚ã†ä¸€ã¤ã¯ã€ãªãœã‹ Mac OS X v10.4.11 ã® gcc 4.0ã§ãã¡ã‚“ã¨compileã—ãªã„ã“ã¨ã€‚
fuba 2009/02/22
ã¤ã‹ã†

perl

trie

tx
ãƒªãƒ³ã‚¯
Tx: Succinct Trie Data Structure
English æ¦‚è¦ Txã¯ã‚³ãƒ³ãƒ‘ã‚¯ãƒˆãªTrieã‚’æ§‹ç¯‰ã™ã‚‹ãŸã‚ã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã§ã™ï¼Žå¾“æ¥ã®Trieã®å®Ÿè£…ï¼ˆdartsç‰ï¼‰ã«æ¯”ã¹1/4ã€œ1/10ã®ä½œæ¥é ˜åŸŸé‡ã§è¾žæ›¸ã‚’ä¿æŒã™ã‚‹ã“ã¨ãŒã§ãã€æ•°å„„ã€œåå„„ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ãªã©å¤§è¦æ¨¡ãªè¾žæ›¸ã‚’æ‰±ã†ã“ã¨ãŒå¯èƒ½ã§ã™ï¼ŽTrieã¯æ–‡å—åˆ—ã‹ã‚‰ãªã‚‹ã‚ãƒ¼é›†åˆã‚’å‡¦ç†ã™ã‚‹ãƒ‡ãƒ¼ã‚¿æ§‹é€ ã§ã€ã‚ãƒ¼ãŒè¾žæ›¸ã«å«ã¾ã‚Œã¦ã„ã‚‹ã‹ã®ã¿ã§ã¯ãªãã€ã‚ãƒ¼ã®PrefixãŒå«ã¾ã‚Œã¦ã„ã‚‹ã‹ã‚’é«˜é€Ÿã«æ±‚ã‚ã‚‹ã“ã¨ãŒã§ãã¾ã™ï¼Žå†…éƒ¨ãƒ‡ãƒ¼ã‚¿æ§‹é€ ã«ã¯Succinct Data Structureã§ã‚ã‚‹Level-Order Unary Degree Sequence (LOUDS)ã‚’åˆ©ç”¨ã—ã¦ã„ã¾ã™ï¼Ž ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ Txã¯ãƒ•ãƒªãƒ¼ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§ã™ï¼ŽBSD ãƒ©ã‚¤ã‚»ãƒ³ã‚¹ã«å¾“ã£ã¦æœ¬ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚’ä½¿ç”¨,å†é…å¸ƒã™ã‚‹ã“ã¨ãŒã§ãã¾ã™. tx-0.12.tar.gz: HTTP Archives tx-0.11.tar.gz: HTTP tx
fuba 2007/03/06
tech

app

trie

ir
ãƒªãƒ³ã‚¯
Tx - DO++
ã„ã¤ã‚‚ãƒ—ãƒã‚°ãƒ©ãƒ ä½œã‚Šã£ã±ãªã—ã ã£ãŸã®ã§ã€è§£èª¬ã¨ãƒžãƒ‹ãƒ¥ã‚¢ãƒ«ã‚’æ›¸ã„ã¦ã¿ã¾ã—ãŸã€‚Txã€‚çœã‚¹ãƒšãƒ¼ã‚¹ãªtrieã§ã™ ã¨ã‚Šã‚ãˆãšå‡ºã™ã¨ã“ã‚ã¾ã§è¡ŒããŸã‹ã£ãŸã®ã§æœ€ä½Žé™ã®å®Ÿè£…ã¨è§£èª¬ã—ã‹æ›¸ã„ã¦ã„ã¾ã›ã‚“ãŒã€ã“ã‚Œã‹ã‚‰å°‘ã—ãšã¤æ›¸ãè¶³ã—ã¦ã„ãã¾ã™ã€‚ çµå±€ã€ã“ã‚Œã‚’ä½¿ã£ã¦ä»Šä½•ãŒã§ãã‚‹ã‹ã¨ã„ã†ã¨ã€ã‚ãƒ¼é›†åˆãŒã‚ã£ãŸã‚‰ã€ãã‚Œã‚‰ã«ï¼ˆå…¥åŠ›é †ã§ã¯ãªã„ãŒï¼‰å›ºæœ‰ã®ç•ªå·ã‚’0ã‹ã‚‰é †ã«ä»˜ã‘ã‚‰ã‚Œã¦ã€Txã‚’ä½¿ã£ã¦ã€ã‚ãƒ¼ã®ç•ªå·ã‚’å¼•ãã“ã¨ãŒã§ãã‚‹ï¼ˆã‚‚ã—ãªã„ãªã‚‰ã€NOTFOUNDãŒè¿”ã£ã¦ãã‚‹ï¼‰ã€‚ å¤§ä½“å…¥åŠ›ã‚ãƒ¼ã®ãƒˆãƒ¼ã‚¿ãƒ«ã®é•·ã•ã®åŠåˆ†ãã‚‰ã„ã®ã‚¹ãƒšãƒ¼ã‚¹ã§ã§ãã¾ã™ã€‚ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ä½œã‚‹å ´åˆã¯å„ã‚ãƒ¼ã«ä»˜éšã™ã‚‹ãƒ‡ãƒ¼ã‚¿ã‚’vectorã¨ã‹ã«ã‚ãƒ¼ã®æ•°ã ã‘ã„ã‚Œã¦ãŠã„ã¦ã€ãã‚Œã‚‰ã‚’Txã‚’ä½¿ã£ã¦å‚ç…§ã€æ“ä½œã™ã‚‹ã“ã¨ã«ãªã‚Šã¾ã™ã€‚ãã®ä¾‹ã‚‚ä½œã‚‰ãªã„ã¨ loud (level-order unary tree)ã¨ã‚ˆã°ã‚Œã‚‹æœ¨ã®succinct ãªè¡¨ç¾ã‚’ä½¿ã£ãŸã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ä½œã£ã¦ã¿
fuba 2007/03/06
tech

app

trie

ir
ãƒªãƒ³ã‚¯
1