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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) Karp-Rabin ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÑ ¼øÀ§´ÙÁßÆÐÅϸÅĪ ¾Ë°í¸®ÁòÀÇ º´·Ä ±¸Çö
¿µ¹®Á¦¸ñ(English Title) Parallel Implementation of the Order-Preserving Multiple Pattern Matching Algorithm using the Karp-Rabin Algorithm
ÀúÀÚ(Author) ¹Ú°æºó   ±è¿µÈ£   ½ÉÁ¤¼·   Kyung Bin Park   Youngho Kim   Jeong Seop Sim  
¿ø¹®¼ö·Ïó(Citation) VOL 48 NO. 03 PP. 0249 ~ 0256 (2021. 03)
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(Korean Abstract)
±æÀÌ°¡ °°Àº µÎ ¹®ÀÚ¿­Àº °¢ ¹®ÀÚÀÇ »ó´ëÀû ¼øÀ§°¡ ¸ðµÎ ÀÏÄ¡ÇÒ ¶§ ¼øÀ§µ¿ÇüÀ̶ó ÇÑ´Ù. ¼øÀ§´Ù ÁßÆÐÅϸÅĪ¹®Á¦´Â ÅؽºÆ® T(|T|=n)¿Í ÆÐÅϵéÀÇ ÁýÇÕ ~P = {P1, P2, ¡¦ , Pk}°¡ ÁÖ¾îÁ³À» ¶§, ~PÀÇ ÆÐÅϵé°ú ¼øÀ§µ¿ÇüÀÎ TÀÇ ¸ðµç ºÎºÐ¹®ÀÚ¿­À» ã´Â ¹®Á¦ÀÌ´Ù. ÆÐÅϵé Áß °¡Àå ªÀº ÆÐÅÏÀÇ ±æÀ̸¦ m, °¡Àå ±ä ÆÐÅÏ ÀÇ ±æÀ̸¦ ~m, ¸ðµç ÆÐÅϵéÀÇ ±æÀÌÀÇ ÇÕÀ» MÀ̶ó ÇÏÀÚ. M ¡ôm^O(1) ÀÎ °æ¿ì Karp-Rabin ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÏ¿© Ž»ö´Ü°è¸¦ Æò±ÕÀûÀ¸·Î O(n) ½Ã°£¿¡ ¼öÇàÇÏ´Â ¼øÀ§´ÙÁßÆÐÅϸÅĪ ¾Ë°í¸®ÁòÀÌ Á¦½ÃµÇ¾ú´Ù. º» ³í¹®¿¡ ¼­´Â Karp-Rabin ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÏ¿© ¼øÀ§´ÙÁßÆÐÅϸÅĪ¹®Á¦¸¦ º´·ÄÀûÀ¸·Î ÇØ°áÇÏ´Â ±¸Çö ¹æ¹ýÀ» Á¦½ÃÇÑ´Ù. Á¦½ÃÇÏ´Â º´·Ä ±¸ÇöÀº Àü󸮴ܰ踦 O(M)°³ÀÇ ½º·¹µå¸¦ »ç¿ëÇÏ¿© Æò±ÕÀûÀ¸·Î O(~m) ½Ã°£¿¡ ¼öÇàÇϸç, Ž»ö´Ü°è¸¦ O(n)°³ÀÇ ½º·¹µå¸¦ »ç¿ëÇÏ¿© Æò±ÕÀûÀ¸·Î O(m) ½Ã°£¿¡ °¢°¢ ¼öÇàÇÑ´Ù. ¹«ÀÛÀ§·Î »ý¼ºµÈ ¹®ÀÚ¿­¿¡ ´ëÇØ ½ÇÇèÇÑ °á°ú, n=1,000,000, k=1,000, m=5ÀÏ ¶§ º» ³í¹®¿¡¼­ Á¦½ÃÇÏ´Â º´·Ä ±¸ÇöÀÌ ±âÁ¸ÀÇ ¼øÂ÷¾Ë°í¸®Áòº¸´Ù ¾à 201.5¹è ºü¸£°Ô ¼öÇàµÇ¾ú´Ù.
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(English Abstract)
When two strings of the same length have the same relative orders, they are called order-isomorphic. Given a text T(|T|=n) and a set of patterns ~P = {P1, P2, ¡¦ , Pk}, the order-preserving multiple pattern matching problem is to find all substrings of T that are order-isomorphic to any pattern in ~P. Let m be the length of the shortest pattern, ~m be the length of the longest pattern, and M be the sum of lengths of all the patterns in ~P. When M is polynomial with respect to m , an order-preserving multiple pattern matching algorithm using the Karp-Rabin algorithm was presented whose searching step runs in O(n) time on average. In this paper, we implemented an order-preserving multiple pattern matching algorithm using the Karp-Rabin algorithm in parallel. It runs in O(m) time on average using O(n) threads in the preprocessing step and runs in O(m) time on average using O(n) threads in the searching step. The experimental results for random strings as input showed that our parallel implementation performed approximately 201.5 times faster than the existing sequential algorithm when n=1,000,000, k=1,000, m=5.
Å°¿öµå(Keyword) ¼øÀ§´ÙÁßÆÐÅϸÅĪ   Karp-Rabin ¾Ë°í¸®Áò   º´·Ä ±¸Çö   GPU   order-preserving multiple pattern matching   Karp-Rabin algorithm   parallel implementation   GPU  
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