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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ ³í¹®Áö D : µ¥ÀÌŸº£À̽º

Á¤º¸°úÇÐȸ ³í¹®Áö D : µ¥ÀÌŸº£À̽º

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ÇѱÛÁ¦¸ñ(Korean Title) J-tree: »ç¿ëÀÚÀÇ °Ë»öÆÐÅÏÀ» ÀÌ¿ëÇÑ ´ë¿ë·® µ¥ÀÌŸ¸¦ À§ÇÑ È¿À²ÀûÀÎ »öÀÎ
¿µ¹®Á¦¸ñ(English Title) J-Tree: An Efficient Index using User Searching Patterns for Large Scale Data
ÀúÀÚ(Author) Àå¼ö¹Î   ¼­±¤¼®   À¯Àç¼ö   Sumin Jang   Kwangseok Seo   Jaesoo Yoo  
¿ø¹®¼ö·Ïó(Citation) VOL 36 NO. 01 PP. 0044 ~ 0049 (2009. 02)
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(Korean Abstract)
ÃÖ±Ù¿¡ ÈÞ´ë¿ë ´Ü¸»±âµéÀÇ ¹ßÀüÀ¸·Î, ´ë¿ë·® µ¥ÀÌŸ¿¡ ´ëÇÑ ´Ù¾çÇÑ °Ë»ö ¼­ºñ½ºµéÀÌ ÈÞ´ë¿ë ´Ü¸»±â¿¡ Á¦°øµÇ°í ÀÖ´Ù. Á¤º¸ °Ë»öÀ» À§ÇÑ ´ëºÎºÐ ÀÀ¿ëÇÁ·Î±×·¥µéÀº ´ë¿ë·® µ¥ÀÌŸ¸¦ °Ë»öÇϱâ À§ÇÏ¿© B-tree³ª R-tree¿Í °°Àº »öÀÎÀ» »ç¿ëÇÑ´Ù. ±×·¯³ª Àüü µ¥ÀÌŸÀÇ ¸Å¿ì ÀûÀº ºÎºÐÀÌ »ç¿ëÀÚ¿¡ ÀÇÇÏ¿© Á¢±ÙµÈ´Ù. ¶ÇÇÑ, °¢ µ¥ÀÌŸ¿¡ ´ëÇÑ Á¢±Ù ºóµµ¼öµéÀº ´Ù¾çÇÏ´Ù. ±×·¯³ª B-tree³ª R-tree¿Í °°Àº »öÀεéÀº ÆíÇâÀû Á¢±Ù ÆÐÅÏÀÇ Æ¯¼ºÀ» °í·ÁÇÏÁö ¾Ê´Â´Ù. ±×¸®°í ij½¬´Â ºü¸¥ Á¢±ÙÀ» À§Çؼ­ ¹Ýº¹ÀûÀ¸·Î Á¢±ÙµÇ´Â µ¥ÀÌŸ¸¦ ¸Þ¸ð¸®¿¡ ÀúÀåÇÑ´Ù. ±×·¯³ª ij½¬¿¡¼­ »ç¿ëÇÏ´Â ¸Þ¸ð¸®ÀÇ Å©±â´Â Á¦ÇÑÀûÀÌ´Ù. º» ³í¹®¿¡¼­´Â »ç¿ëÀÚÀÇ °Ë»öÆÐÅϵéÀ» °í·ÁÇÑ µð½ºÅ© ±â¹ÝÀÇ »õ·Î¿î »öÀα¸Á¶, J-tree¸¦ Á¦¾ÈÇÑ´Ù. Á¦¾ÈµÈ »öÀÎÀº ¸ðµç µ¥ÀÌŸ¿¡ ´ëÇÑ ÀÏÁ¤ÇÑ °Ë»ö¼Óµµ¸¦ º¸ÀåÇÏ´Â ±ÕÇüÆ®¸®ÀÌ´Ù. ±×¸®°í ÀÚÁÖ Á¢±ÙµÈ µ¥ÀÌŸ¿¡ ´ëÇؼ­´Â ºü¸¥ °Ë»ö¼Óµµ¸¦ Á¦°øÇÑ´Ù. ¼º´ÉÆò°¡´Â ´Ù¾çÇÑ ½ÇÇèȯ°æ¿¡¼­ Á¦¾ÈµÈ »öÀÎÀÇ È¿À²¼ºÀ» º¸¿©ÁØ´Ù.
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(English Abstract)
In recent years, with the development of portable terminals, various searching services on large data have been provided in portable terminals. In order to search large data, most applications for information retrieval use indexes such as B-trees or R-trees. However, only a small portion of the data set is accessed by users, and the access frequencies of each data are not uniform. The existing indexes such as B-trees or R-trees do not consider the properties of the skewed access patterns. And a cache stores the frequently accessed data for fast access in memory. But the size of memory used in the cache is restricted. In this paper, we propose a new index based on disk, called J-tree, which considers user's search patterns. The proposed index is a balanced tree which guarantees uniform searching time on all data. It also supports fast searching time on the frequently accessed data. Our experiments show the effectiveness of our proposed index under various settings.
Å°¿öµå(Keyword) °Ë»ö »öÀΠ  Search Index   ÆíÇâ Á¢±Ù ÆÐÅÏ   Skewed Access Patterns   »ç¿ëÀÚ °Ë»ö ÆÐÅÏ   User Searching Patterns  
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