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ÇѱÛÁ¦¸ñ(Korean Title) |
µµ·Î ³×Æ®¿öÅ©¿¡¼ »ç¿ëÀÚ Á¤º¸ º¸È£¸¦ Áö¿øÇÏ´Â ÁúÀÇ¿µ¿ª¿¡ ´ëÇÑ k-ÃÖ±ÙÁ¢ ÁúÀÇ Ã³¸® ¾Ë°í¸®Áò |
¿µ¹®Á¦¸ñ(English Title) |
A K-nearest Neighbor Query Processing Algorithm for a Query Region Supporting User Privacy Protection in Road Network |
ÀúÀÚ(Author) |
±èÇüÀÏ
À¯Çý°â
ÀåÀç¿ì
Hyeongil Kim
Hyekyeom Yoo
Jaewoo Chang
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¿ø¹®¼ö·Ïó(Citation) |
VOL 39 NO. 01 PP. 0053 ~ 0063 (2012. 02) |
Çѱ۳»¿ë (Korean Abstract) |
ÃÖ±Ù ¹«¼± Åë½Å ±â¼úÀÇ ¹ß´Þ ¹× ¸ð¹ÙÀÏ ±â±âÀÇ ¹ß´Þ·Î ÀÎÇÏ¿© À§Ä¡ ±â¹Ý ¼ºñ½º°¡ ÁÖ¸ñÀ» ¹Þ°í ÀÖ´Ù. ±×·¯³ª »ç¿ëÀÚÀÇ Á¤È®ÇÑ À§Ä¡Á¤º¸¸¦ ÅëÇØ À§Ä¡ ±â¹Ý ¼ºñ½º ¼¹ö¿¡ ÁúÀǸ¦ ¿äûÇÏ´Â °ÍÀº ½É°¢ÇÑ °³ÀÎ Á¤º¸ ´©ÃâÀÇ À§ÇèÀÌ µÉ ¼ö Àձ⠶§¹®¿¡, »ç¿ëÀÚ Á¤º¸ º¸È£¸¦ À§ÇØ µµ·Î ³×Æ®¿öÅ©¸¦ °í·ÁÇÏ¿© ÁúÀÇ¿µ¿ªÀ» »ý¼ºÇÏ´Â ¿¬±¸°¡ È°¹ßÈ÷ ÁøÇàµÇ¾î ¿Ô´Ù. µû¶ó¼ ÁúÀÇ¿µ¿ª¿¡ ´ëÇÑ È¿À²ÀûÀÎ ÁúÀÇ Ã³¸® ¹æ¹ýÀÌ ¿ä±¸µÈ´Ù. À̸¦ À§ÇØ, º» ³í¹®¿¡¼´Â µµ·Î ³×Æ®¿öÅ©¿¡¼ »ç¿ëÀÚ Á¤º¸ º¸È£¸¦ Áö¿øÇÏ´Â ÁúÀÇ¿µ¿ª¿¡ ´ëÇÑ k-ÃÖ±ÙÁ¢ ÁúÀÇ Ã³¸® ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â ±â¹ýÀº POI(Point Of Interest)¸¦ È¿À²ÀûÀ¸·Î °Ë»öÇϱâ À§ÇÏ¿© Island À妽º¸¦ »ç¿ëÇÑ´Ù. ¶ÇÇÑ, º» ³í¹®Àº ÁúÀÇ Ã³¸® ¼º´ÉÀ» Çâ»ó½ÃÅ°±â À§ÇØ ÀûÀÀÀû Island À妽º¸¦ »ý¼ºÇÏ´Â ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. ¸¶Áö¸·À¸·Î, ¼º´ÉÆò°¡¸¦ ÅëÇØ Á¦¾ÈÇÏ´Â ±â¹ýÀÌ ±âÁ¸ ±â¹ýµé¿¡ ºñÇØ ³×Æ®¿öÅ© È®Àå ºñ¿ë ¹× ¼ºñ½º ½Ã°£ Ãø¸é¿¡¼ ¿ì¼öÇÔÀ» º¸ÀδÙ.
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¿µ¹®³»¿ë (English Abstract) |
Recent development in wireless communication technologies and mobile equipments are making location-based services (LBSs) popular. However, since requesting queries to LBS servers by using users' exact locations could make the privacy of the users in danger, many researches have been studied on generating query region for the user privacy protection, specially in road networks. Therefore, an efficient query processing mechanism for the query region is required. In this paper, we propose a k-nearest neighbor query processing algorithm for a query region supporting user privacy protection in road networks. The proposed scheme uses the Island index to efficiently retrieve POIs. This paper also proposes the method that generate the Adaptive Island index which could improve the performance of the query processing. Finally, we show from our performance analysis that our query processing schemes outperform the existing schemes in terms of network expansion cost and service time.
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Å°¿öµå(Keyword) |
À§Ä¡ ±â¹Ý ¼ºñ½º
k-ÃÖ±ÙÁ¢ ÁúÀÇ Ã³¸® ±â¹ý
µµ·Î ³×Æ®¿öÅ©
Island À妽º
location-based services
k-nearest neighbor query processing scheme
road networks
Island index
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