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ÇѱÛÁ¦¸ñ(Korean Title) |
µ¿ÀÏ Æ¯¼º ³ëµå Á¦°Å¸¦ ÅëÇÑ Ãß»ó ±×·¡ÇÁ ±â¹ÝÀÇ °æ·Î Ž»ö ¾Ë°í¸®Áò |
¿µ¹®Á¦¸ñ(English Title) |
A Path Finding Algorithm based on an Abstract Graph Created by Homogeneous Node Elimination Technique |
ÀúÀÚ(Author) |
±èÁö¼ö
ÀÌÁö¿Ï
Á¶´ë¼ö
Ji-Soo Kim
Ji-Wan Lee
Dae-Soo Cho
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¿ø¹®¼ö·Ïó(Citation) |
VOL 11 NO. 04 PP. 0039 ~ 0046 (2009. 12) |
Çѱ۳»¿ë (Korean Abstract) |
ÀϹÝÀûÀ¸·Î ÈÞ¸®½ºÆ½À» ÀÌ¿ëÇÑ ¾Ë°í¸®Áò¿¡¼´Â Ž»ö ºñ¿ëÀÌ Áõ°¡ÇÏ´Â ¹®Á¦°¡ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. ÈÞ¸®½ºÆ½¿¡ ÀÇÇØ °áÁ¤µÈ ÃßÁ¤ °æ·Î¿¡ ½ÇÁ¦ °æ·Î°¡ Á¸ÀçÇÏÁö ¾ÊÀ» °æ¿ì, ÈÞ¸®½ºÆ½ °¡ÁßÄ¡ °ªÀÌ ºñ½ÁÇÑ 2°¡Áö ÀÌ»óÀÇ °æ·Î°¡ Á¸ÀçÇÒ °æ¿ì Ž»ö ºñ¿ëÀÌ Áõ°¡ÇÑ´Ù. ÀÌ ³í¹®¿¡¼´Â Ž»ö ºñ¿ë Áõ°¡ ¹®Á¦Á¡À» ÇØ°áÇϱâ À§ÇØ Ãß»ó ±×·¡ÇÁ¸¦ Á¦¾ÈÇÑ´Ù. Ãß»ó ±×·¡ÇÁ´Â ½ÇÁ¦ µµ·Î¸¦ ´Ü¼øÈÇÑ ±×·¡ÇÁ·Î¼, Àüü Áöµµ¸¦ °íÁ¤µÈ Å©±âÀÇ ±×¸®µå ¼¿·Î ³ª´©°í, ¼¿°ú µµ·Î Á¤º¸¸¦ ±â¹ÝÀ¸·Î »ý¼ºµÈ´Ù. °æ·Î Ž»öÀº Ãß»ó ±×·¡ÇÁ Ž»ö, ½ÇÁ¦ µµ·Î ³×Æ®¿öÅ© Ž»ö ¼øÀ¸·Î 2´Ü°è·Î ¼öÇàµÈ´Ù. 106,254°³ÀÇ °£¼±À¸·Î ÀÌ·ç¾îÁø ½ÇÁ¦ µµ·Î ³×Æ®¿öÅ© µ¥ÀÌÅÍ¿¡ ´ëÇؼ ¼º´É Æò°¡ ½ÇÇèÀ» ¼öÇàÇÑ °á°ú Ž»ö ºñ¿ë Ãø¸é¿¡¼ ±×¸®µå ¼¿ Å©±â¿¡ µû¶ó ±×¸®µå ±â¹Ý A* ¾Ë°í¸®Áò¿¡ ºñÇØ ÃÖ¼Ò 3%¿¡¼ ÃÖ´ë 35% ÁÁÀº ¼º´ÉÀ» º¸¿´´Ù. ¹Ý¸é¿¡ À¯È¿ ¼¿À» Á¦¿ÜÇÑ ¿µ¿ª¿¡ ´ëÇÑ Å½»öÀÌ ÀÌ·ç¾îÁöÁö ¾Ê±â ¶§¹®¿¡, »ý¼ºµÈ °æ·ÎÀÇ À̵¿ ºñ¿ëÀº 1.5~6.6% Áõ°¡ÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Generally, Path-finding algorithms which use heuristic function may occur a problem of the increase of exploring cost in case of that there is no way determined by heuristic function or there are 2 way more which have almost same cost. In this paper, we propose an abstract graph for path-finding with dynamic information. The abstract graph is a simple graph as real road network is abstracted. The abstract graph is created by fixed-size cells and real road network. Path-finding with the abstract graph is composed of two step searching, path-finding on the abstract graph and on the real road network. We performed path-finding algorithm with the abstract graph against A* algorithm based on fixed-size cells on road network that consists of 106,254 edges. In result of evaluation of performance, cost of exploring in path-finding with the abstract graph is about 3~30% less than A* algorithm based on fixed-size cells. Quality of path in path-finding with the abstract graph is, However, about 1.5~6.6% more than A* algorithm based on fixed-size cells because edges eliminated are not candidates for path-finding.
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Å°¿öµå(Keyword) |
µ¿Àû ÈÞ¸®½ºÆ½
Ž»ö ¿µ¿ª °¡ÁöÄ¡±â
A* ¾Ë°í¸®Áò
Ãß»ó ±×·¡ÇÁ
Dynamic Heuristic
Pruning Search Space
A* Algorithm
Abstract Graph
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ÆÄÀÏ÷ºÎ |
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