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ÀÌÀü°Ç
ÇѱÛÁ¦¸ñ(Korean Title)
SVD¿Í PARAFAC ºÐÇظ¦ ÀÌ¿ëÇÑ ºí·Î±× °ø°£ ºÐ¼®
¿µ¹®Á¦¸ñ(English Title)
An Analysis of a Blogosphere using SVD and PARAFAC Decomposition
ÀúÀÚ(Author)
±è±â³²
±è»ó¿í
±èÁø¿ì
Christos Faloutsos
ÀÌÁØÈ£
Ki-Nam Kim
Sang-Wook Kim
Jin-Woo Kim
Christos Faloutsos
Joon-Ho Lee
¿ø¹®¼ö·Ïó(Citation)
VOL 39 NO. 03 PP. 0159 ~ 0165 (2012. 06)
Çѱ۳»¿ë
(Korean Abstract)
ºí·Î±× °ø°£Àº ´ëÇ¥ÀûÀÎ ¿Â¶óÀÎ »çȸ ¿¬°á¸Á Áß ÇϳªÀÌ´Ù. »çȸ ¿¬°á¸Á ºÐ¼®¿¡¼ Ä¿¹Â´ÏƼ ±¸Á¶ ÆľÇÀº Áß¿äÇÑ ¿¬±¸ÀÌ´Ù. º» ³í¹®¿¡¼´Â ºí·Î±× °ø°£ÀÇ ºÐ¼®¿¡ ´ëÇÏ¿© ³íÇÑ´Ù. º» ³í¹®¿¡¼´Â ½ÇÁ¦ ºí·Î±× °ø°£À» Çà·Ä(matrix)°ú ÅÙ¼(tensor)·Î Ç¥ÇöÇÏ°í SVD(singular value decomposition)¿Í PARAFAC (parallel factor analysis) ºÐÇظ¦ ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÑ´Ù. ºÐ¼® °á°ú¿¡ µû¸£¸é, SVD´Â ƯÁ¤ ÁÖÁ¦¸¦ ³ªÅ¸³»´Â Ä¿¹Â´ÏƼµéÀ» ½Äº°ÇßÀ¸¸ç, °¢ Ä¿¹Â´ÏƼ¿¡¼ ¿µÇâ·Â ÀÖ´Â ºí·Î±×µé°ú ±ÇÀ§ ÀÖ´Â Æ÷½ºÆ®µéÀ» ½Äº°Çß´Ù. PARAFAC ºÐÇØ´Â SVD¿¡ ºñÇØ ´õ ¸¹Àº Ä¿¹Â´ÏƼµéÀ» ½Äº°ÇÏ¿´´Ù. ¶ÇÇÑ, PARAFAC ºÐÇØ´Â °¢ Ä¿¹Â´ÏƼÀÇ ¿µÇâ·Â ÀÖ´Â ºí·Î±×µé°ú ±ÇÀ§ ÀÖ´Â Æ÷½ºÆ®µé»Ó¸¸ ¾Æ´Ï¶ó ¿µÇâ·Â ÀÖ´Â Å°¿öµåµé±îÁö ½Äº°ÇÒ ¼ö ÀÖ¾ú´Ù.
¿µ¹®³»¿ë
(English Abstract)
A blogosphere is a representative example of online social networks. Identifying a community structure is an important issue in social network analysis. In this paper, we address an analysis of a blogosphere. We model a real-world blogosphere as a matrix and a tensor, and then analyze it by using the SVD and PARAFAC decomposition. According to the results, the SVD successfully identified communities, each of which focuses on a specific topic, and found hub blogs and authoritative posts within each community. The PARAFAC decomposition also succeeded in extracting more communities of finer granules than the SVD. In addition, the PARAFAC decomposition could identify the dominant keywords in addition to the hub blogs and authoritative posts honored in each community.
Å°¿öµå(Keyword)
ºí·Î±× °ø°£
Çà·Ä ºÐÇØ
ÅÙ¼ ºÐÇØ
SVD
PARAFAC decomposition
Blogosphere
matrix factorization
tensor factorization
SVD
PARAFAC decomposition
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