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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö D

Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö D

Current Result Document : 4 / 4 ÀÌÀü°Ç ÀÌÀü°Ç

ÇѱÛÁ¦¸ñ(Korean Title) µµ·Î ³×Æ®¿öÅ© ȯ°æÀ» À§ÇÑ ±ËÀû Ŭ·¯½ºÅ͸µ
¿µ¹®Á¦¸ñ(English Title) Trajectory Clustering in Road Network Environment
ÀúÀÚ(Author) ¹éÁöÇà   ¿øÁ¤ÀÓ   ±è»ó¿í   Jihaeng Bak   Jungim Won   Sangwook Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 16-D NO. 03 PP. 0317 ~ 0326 (2009. 06)
Çѱ۳»¿ë
(Korean Abstract)
ÃÖ±Ù ±ËÀû Á¤º¸¸¦ ÀÌ¿ëÇÑ ¸¹Àº ¿¬±¸µéÀÌ ÁøÇàµÇ°í ÀÖÀ¸³ª, ÀÌµé ´ëºÎºÐÀÇ ¿¬±¸´Â À¯Å¬¸®µå °ø°£ ³»ÀÇ ±ËÀûµéÀ» ´ë»óÀ¸·Î ÇÏ°í ÀÖ´Ù. ±×·¯³ª ½ÇÁ¦ ÀÀ¿ë¿¡¼­ ´ëºÎºÐÀÇ À̵¿ °´Ã¼µéÀº µµ·Î ³×Æ®¿öÅ© °ø°£»ó¿¡ Á¸ÀçÇϹǷÎ, À¯Å¬¸®µå °ø°£À» ´ë»óÀ¸·Î ÇÑ ¿¬±¸µéÀ» µµ·Î ³×Æ®¿öÅ© °ø°£¿¡ Àû¿ë½ÃÅ°´Â °ÍÀº ÀûÇÕÇÏÁö ¾Ê´Ù. º» ³í¹®¿¡¼­´Â µµ·Î ³×Æ®¿öÅ© ³» À̵¿ °´Ã¼µéÀÇ ´ë¿ë·® ±ËÀû Á¤º¸¸¦ ´ë»óÀ¸·Î ÇÏ´Â È¿°úÀûÀΠŬ·¯½ºÅ͸µ ±â¹ý¿¡ ´ëÇÏ¿© ³íÇÑ´Ù. À̸¦ À§ÇÏ¿© ¿ì¼± º» ³í¹®¿¡¼­´Â ±ËÀûÀ» °¢ À̵¿ °´Ã¼°¡ ½Ã°£¿¡ µû¶ó Áö³ª¿Â µµ·Î ¼¼±×¸ÕÆ®µéÀÇ ¿¬¼ÓÀ¸·Î Á¤ÀÇÇÑ´Ù. ´ÙÀ½, µµ·Î¼¼±×¸ÕÆ®µéÀÇ ±æÀÌ¿Í ½Äº°ÀÚ Á¤º¸¸¦ ÀÌ¿ëÇÑ »õ·Î¿î À¯»çµµ ÃøÁ¤ ÇÔ¼ö¸¦ Á¦¾ÈÇÏ°í, À̸¦ ÀÌ¿ëÇÏ¿© ÃøÁ¤µÈ ±ËÀû°£ÀÇ À¯»çµµ Á¤º¸¸¦ ±â¹ÝÀ¸·Î FastMap°ú °èÃþ Ŭ·¯½ºÅ͸µ(hierarchical clustering)±â¹ýÀ» ÀÌ¿ëÇÏ¿© Àüü ±ËÀûµéÀ» Ŭ·¯½ºÅ͸µÇÏ´Â ¹æ½ÄÀ» Á¦¾ÈÇÑ´Ù. ¶ÇÇÑ, º» ³í¹®¿¡¼­´Â ½ÇÁ¦ ÀÀ¿ë¿¡¼­ ´ëºÎºÐÀÇ À̵¿ °´Ã¼´Â ÃÖ´Ü °Å¸®¸¦ ÀÌ¿ëÇÏ¿© ¿òÁ÷Àδٴ Ư¼ºÀ» ¹Ý¿µÇÑ »õ·Î¿î ±ËÀû »ý¼º ±â¹ýÀ» Á¦¾ÈÇÏ°í, ÀÌ·¸°Ô »ý¼ºµÈ ±ËÀû µ¥ÀÌÅ͸¦ ÀÌ¿ëÇÏ¿© Á¦¾ÈµÈ Ŭ·¯½ºÅ͸µ ±â¹ý¿¡ ´ëÇÑ ´Ù¾çÇÑ ¼º´É Æò°¡ °á°ú¸¦ º¸ÀδÙ. ½ÇÇè °á°ú¿¡ µû¸£¸é Á¦¾ÈµÈ ±â¹ýÀº »ç¶÷¿¡ ÀÇÇÏ¿© À¯»ç ±ËÀûµéÀ» Ŭ·¯½ºÅ͸µÇÑ °á°ú¿Í ºñ±³ÇÏ¿© 95%ÀÌ»óÀÇ ³ôÀº Á¤È®µµ¸¦ º¸¿´´Ù.
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(English Abstract)
Recently, there have been many research efforts proposed on trajectory information. Most of them mainly focus their attention on those objects moving in Euclidean space. Many real-world applications such as telematics, however, deal with objects that move only over road networks, which are highly restricted for movement. Thus, the existing methods targeting Euclidean space cannot be directly applied to the road network space. This paper proposes a new clustering scheme for a large volume of trajectory information of objects moving over road networks. To the end, we first define a trajectory on a road network as a sequence of road segments a moving object has passed by. Next, we propose a similarity measurement scheme that judges the degree of similarity by considering the total length of matched road segments. Based on such similarity measurement, we propose a new clustering algorithm for trajectories by modifying and adjusting the FastMap and hierarchical clustering schemes. To evaluate the performance of the proposed clustering scheme, we also develop a trajectory generator considering the observation that most objects tend to move from the starting point to the destination point along their shortest path, and perform a variety of experiments using the trajectories thus generated. The performance result shows that our scheme has the accuracy of over 95% in comparison with that judged by human beings.
Å°¿öµå(Keyword) À̵¿ °´Ã¼   ±ËÀû   À¯»çµµ ÇÔ¼ö   Ŭ·¯½ºÅ͸µ   Moving Object   Trajectory   Similarity Measurement   Clustering  
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