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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö ¼ÒÇÁÆ®¿þ¾î ¹× µ¥ÀÌÅÍ °øÇÐ

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Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) »çȸ°ü°è¸Á¿¡¼­ ¸Å°³ Á߽ɵµ ÃßÁ¤À» À§ÇÑ È¿À²ÀûÀÎ ¾Ë°í¸®Áò
¿µ¹®Á¦¸ñ(English Title) An Efficient Algorithm for Betweenness Centrality Estimation in Social Networks
ÀúÀÚ(Author) ½Å¼öÁø   ±è¿ëȯ   ±èÂù¸í   ÇÑ¿¬Èñ   Soo-Jin Shin   Yong-hwan Kim   Chan-Myung Kim   Youn-Hee Han  
¿ø¹®¼ö·Ïó(Citation) VOL 04 NO. 01 PP. 0037 ~ 0044 (2015. 01)
Çѱ۳»¿ë
(Korean Abstract)
»çȸ°ü°è¸Á ºÐ¼®¿¡ À־ ¸Å°³ Á߽ɵµ(Betweenness Centrality)´Â ³×Æ®¿öÅ©¸¦ ±¸¼ºÇÏ´Â ³ëµåµéÀÇ »ó´ëÀûÀÎ Áß¿äµµ¸¦ ÆľÇÇϱâ À§ÇÑ Ã´µµ·Î¼­ ÁÖ·Î »ç¿ëµÇ¾î ¿Ô´Ù. ±×·¯³ª ¸Å°³ Á߽ɵµ¸¦ ÃøÁ¤Çϱâ À§ÇÑ ½Ã°£ º¹Àâµµ°¡ ³ô±â ¶§¹®¿¡ ´ë±Ô¸ðÀÇ ¿Â¶óÀÎ »çȸ°ü°è¸Á ¼­ºñ½º¿¡¼­ °¢ ³ëµåÀÇ ¸Å°³ Á߽ɵµ¸¦ »êÃâÇÏ´Â °ÍÀº ½±Áö ¾ÊÀº ¹®Á¦ÀÌ´Ù. ±×·¡¼­ º» ¿¬±¸ÆÀ¿¡¼­´Â °ú°Å¿¡ ³×Æ®¿öÅ©¸¦ ±¸¼ºÇÏ´Â °¢°¢ÀÇ ³ëµåµé¸¶´Ù ÀÚ½ÅÀÇ Áö¿ª Á¤º¸¸¦ È°¿ëÇÏ¿© È®Àå ÀÚ¾Æ ³×Æ®¿öÅ©(Expanded Ego Network)¸¦ Á¤ÀÇÇÏ°í ±× ³×Æ®¿öÅ©¿¡¼­ È®Àå ÀÚ¾Æ ¸Å°³ Á߽ɵµ(Expanded Ego Betweenness)¸¦ »êÃâÇÏ¿© ±âÁ¸ÀÇ ¸Å°³ Á߽ɵµ¸¦ ´ëüÇÏ·Á´Â ½Ãµµ¸¦ ÇÏ¿´´Ù. º» ³í¹®¿¡¼­´Â Áö¿ªÁ¤º¸ ±â¹ÝÀÇ È®Àå ÀÚ¾Æ ³×Æ®¿öÅ©ÀÇ Æ¯Â¡À» ºÐ¼®ÇÏ¿© È®Àå ÀÚ¾Æ ¸Å°³ Á߽ɵµ¸¦ ºü¸£°Ô »êÃâÇÒ ¼ö ÀÖ´Â ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÑ´Ù. ±×¸®°í ÀϹÝÀûÀÎ »çȸ°ü°è¸ÁÀÇ Æ¯¼ºÀ» ´ëÇ¥ÇÏ´Â Barabási-Albert ³×Æ®¿öÅ© ¸ðµ¨À» »ç¿ëÇÑ °¡»ó ³×Æ®¿öÅ©¿Í ½ÇÁ¦ »çȸ°ü°è¸ÁÀ» ´ëÇ¥ÇÏ´Â ÆäÀ̽ººÏ Ä£±¸ °ü°è ³×Æ®¿öÅ©¿¡¼­ÀÇ ½ÇÇèÀ» ÅëÇÏ¿© È®Àå ÀÚ¾Æ ¸Å°³ Á߽ɵµÀÇ Áß¿äµµ ¼øÀ§°¡ ±âÁ¸ ¸Å°³ Á߽ɵµÀÇ Áß¿äµµ ¼øÀ§¿Í °ÅÀÇ ÀÏÄ¡ÇÔÀ» º¸ÀδÙ. ¶ÇÇÑ Á¦¾ÈÇÏ´Â ¾Ë°í¸®ÁòÀÌ ±âÁ¸ ¾Ë°í¸®Áò¿¡ ºñÇØ È®Àå ÀÚ¾Æ ³×Æ®¿öÅ©¿¡¼­ÀÇ È®Àå ÀÚ¾Æ ¸Å°³ Á߽ɵµ¸¦ ´õ ºü¸£°Ô »êÃâÇÔÀ» º¸ÀδÙ.
¿µ¹®³»¿ë
(English Abstract)
In traditional social network analysis, the betweenness centrality measure has been heavily used to identify the relative importance of nodes. Since the time complexity to calculate the betweenness centrality is very high, however, it is difficult to get it of each node in large-scale social network where there are so many nodes and edges. In our past study, we defined a new type of network, called the expanded ego network, which is built only with each node¡¯s local information, i.e., neighbor information of the node¡¯s neighbor nodes, and also defined a new measure, called the expanded ego betweenness centrality. In this paper, We propose algorithm that quickly computes expanded ego betweenness centrality by exploiting structural properties of expanded ego network. Through the experiment with virtual network used Barabási-Albert network model to represent the generic social network and facebook network to represent actual social network, We show that the node¡¯s importance rank based on the expanded ego betweenness centrality has high similarity with that the node¡¯s importance rank based on the existing betweenness centrality. We also show that the proposed algorithm computes the expanded ego betweenness centrality quickly than existing algorithm.
Å°¿öµå(Keyword) »çȸ°ü°è¸Á ºÐ¼®   ¸Å°³ Á߽ɵµ   Áö¿ª Á¤º¸   È®Àå ÀÚ¾Æ ³×Æ®¿öÅ©   È®Àå ÀÚ¾Æ ¸Å°³ Á߽ɵµ   ¾Ë°í¸®Áò  
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