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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö ÄÄÇ»ÅÍ ¹× Åë½Å½Ã½ºÅÛ

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ÇѱÛÁ¦¸ñ(Korean Title) »çȸ°ü°è¸Á¿¡¼­ Áß¿ä ³ëµå ½Äº°À» À§ÇÑ Áö¿ªÁ¤º¸ ±â¹Ý ¸Å°³ Á߽ɵµ
¿µ¹®Á¦¸ñ(English Title) Local Information-based Betweenness Centrality to Identify Important Nodes in Social Networks
ÀúÀÚ(Author) ¼ÕÁø°ï   ±è¿ëȯ   ÇÑ¿¬Èñ   Jin Gon Shon   Yong-hwan Kim   Youn-Hee Han  
¿ø¹®¼ö·Ïó(Citation) VOL 02 NO. 05 PP. 0209 ~ 0216 (2013. 05)
Çѱ۳»¿ë
(Korean Abstract)
ÀüÅëÀûÀÎ »çȸ°ü°è¸Á ºÐ¼®¿¡ À־ °¢ ³ëµåÀÇ ¸Å°³ Á߽ɵµ´Â ¸Þ½ÃÁö Àü´Þ Ãø¸é¿¡¼­ÀÇ °¢ ³ëµåµéÀÇ »ó´ëÀûÀÎ Áß¿äµµ¸¦ ÆľÇÇϴ ôµµ·Î ¿À·§µ¿¾È »ç¿ëµÇ¾î ¿Ô´Ù. ÇÏÁö¸¸, ¸Å°³ Á߽ɵµ¸¦ »êÃâÇϱâ À§ÇÑ °è»ê º¹Àâµµ°¡ ³ô±â ¶§¹®¿¡ ³ëµåÀÇ ¼ö¿Í °£¼±ÀÇ ¼ö°¡ ¸Å¿ì ¸¹Àº ´ë±Ô¸ð »çȸ°ü°è¸Á¿¡¼­´Â °¢ ³ëµåÀÇ ¸Å°³ Á߽ɵµ¸¦ »êÃâÇϱⰡ ¾î·Æ´Ù. º» ³í¹®¿¡¼­´Â °¢ ³ëµåµé¸¶´Ù ÀÚ½ÅÀÇ Áö¿ªÁ¤º¸, Áï ÀÌ¿ô³ëµåµéÀÌ Áö´Ñ °¢°¢ÀÇ ÀÌ¿ô³ëµå Á¤º¸¸¦ È°¿ëÇÏ¿© ±¸¼º°¡´ÉÇÑ È®Àå ÀÚ¾Æ ³×Æ®¿öÅ©(Expanded Ego Network)¸¦ »õ·Ó°Ô Á¤ÀÇÇÏ°í ÀÌ·¯ÇÑ ³×Æ®¿öÅ©¸¦ ±â¹ÝÀ¸·Î È®Àå ÀÚ¾Æ ¸Å°³ Á߽ɵµ(Expanded Ego Betweenness Centrality)¸¦ Á¤ÀÇÇÑ´Ù. ÀϹÝÀûÀÎ »çȸ°ü°è¸ÁÀÇ Æ¯¼ºÀΠôµµ ¾ø´Â ³×Æ®¿öÅ©(Scale-free Network)¸¦ »ý¼ºÇÒ ¼ö ÀÖ´Â Barabási-Albert ³×Æ®¿öÅ© ¸ðµ¨À» »ç¿ëÇÑ ½ÇÇèÀ» ÅëÇÏ¿© Á¦¾ÈÇÑ È®Àå ÀÚ¾Æ ¸Å°³ Á߽ɵµÀÇ °¢ ³ëµåº° ¼øÀ§´Â ±âÁ¸ÀÇ ÀüÅëÀûÀÎ ¹æ½ÄÀ¸·Î »êÃâÇÑ ¸Å°³ Á߽ɵµÀÇ °¢ ³ëµåº° ¼øÀ§¿Í °ÅÀÇ ÀÏÄ¡ÇÔÀ» 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 in terms of message delivery. 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 this paper, we define 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 define a new measure, called the expended ego betweenness centrality. Through the intensive experiment with Barabási-Albert network model to generate the scale-free networks which most social networks have as their embedded feature, we also show that the nodes¡¯ importance rank based on the expanded ego betweenness centrality has high similarity with that based on the traditional betweenness centrality.
Å°¿öµå(Keyword) Social Network Analysis   Betweenness Centrality   Local Information   Expanded Ego Network   »çȸ°ü°è¸Á ºÐ¼®   ¸Å°³ Á߽ɵµ   Áö¿ª Á¤º¸   È®Àå ÀÚ¾Æ ³×Æ®¿öÅ©  
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