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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) »óÇ°µéÀÇ °èÃþÀû ºÐ·ùü°è¸¦ °í·ÁÇÑ ±¸¸Å ÀÌ·Â °£ È¿À²ÀûÀÎ À¯»çµµ ÃøÁ¤
¿µ¹®Á¦¸ñ(English Title) An Efficient Similarity Measure for Purchase Histories Considering Hierarchical Classification of Products
ÀúÀÚ(Author) ¾çÀ¯Á¤   À̱â¿ë   Yu-Jeong Yang   Ki Yong Lee  
¿ø¹®¼ö·Ïó(Citation) VOL 47 NO. 10 PP. 0999 ~ 1007 (2020. 10)
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(Korean Abstract)
¿Â¶óÀÎ ¼îÇθô ¶Ç´Â ¿ÀÇÁ¶óÀÎ ¸ÅÀå¿¡¼­ °¢ °í°´ÀÌ ±¸¸ÅÇÑ »óÇ°µéÀº ½Ã°£ÀÇ È帧¿¡ µû¶ó ÇØ´ç °í°´ÀÇ ±¸¸Å ÀÌ·ÂÀ» Çü¼ºÇÑ´Ù. ¶ÇÇÑ ´ëºÎºÐÀÇ °æ¿ì »óÇ°µé¿¡´Â ±×µéÀÇ ¼¼ºÎ ºÐ·ù¸¦ ³ªÅ¸³»´Â °èÃþÀû ºÐ·ùü°è°¡ Á¸ÀçÇÑ´Ù. º» ³í¹®¿¡¼­´Â »óÇ°µéÀÇ ±¸¸Å ¼ø¼­»Ó¸¸ ¾Æ´Ï¶ó »óÇ°µé¿¡ Á¸ÀçÇÏ´Â °èÃþÀû ºÐ·ùü°è±îÁö °í·ÁÇÏ´Â »õ·Î¿î ±¸¸Å ÀÌ·Â °£ À¯»çµµ ÃøÁ¤ ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾È ¹æ¹ýÀº ±âÁ¸ÀÇ ´ëÇ¥ÀûÀÎ ½ÃÄö½º °£ À¯»çµµ ÃøÁ¤ ¹æ¹ýÀÎ µ¿Àû ŸÀÓ ¿öÇÎ(dynamic time warping) À¯»çµµ¸¦ »óÇ°µéÀÇ °èÃþÀû ºÐ·ùü°è¸¦ ¹Ý¿µÇÏ µµ·Ï È®ÀåÇÏ¿´´Ù. Á¦¾È ¹æ¹ýÀº µÎ ½ÃÄö½º ³» ¿ø¼ÒµéÀ» ºñ±³ÇÒ ¶§ ¿ø¼ÒµéÀÇ ÀÏÄ¡ ¿©ºÎ¿¡ µû¶ó ¿ø¼Òµé °£ÀÇ À¯»çµµ¸¦ 0 ¶Ç´Â 1·Î¸¸ ºÎ¿©ÇÏ´ø ±âÁ¸ ¹æ¹ý°ú ´Þ¸® °èÃþÀû ºÐ·ùü°è¸¦ ¹Ý¿µÇÏ¿© 0¿¡¼­ 1 »çÀÌÀÇ ½Ç¼ö °ªÀ» ºÎ¿©ÇÑ´Ù. ÀÌ¿Í ÇÔ²² º» ³í¹®Àº Á¦¾ÈÇÏ´Â À¯»çµµ ÃøÁ¤ ¹æ¹ý¿¡ ´ëÇÑ È¿À²ÀûÀÎ °è»ê ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â °è»ê ±â¹ýÀº ¼¼±×¸ÕÆ® Æ®¸®(segment tree)¸¦ »ç¿ëÇÏ¿© °èÃþÀû ºÐ·ùü°è ³»¿¡¼­ µÎ »óÇ° °£ÀÇ À¯»çµµ¸¦ ¸Å¿ì ºü¸£°Ô °è»êÇÑ´Ù. º» ³í¹®¿¡¼­´Â ½Çµ¥ÀÌÅÍ¿¡ ±â¹ÝÇÑ ´Ù¾çÇÑ ½ÇÇèÀ» ÅëÇØ Á¦¾È ¹æ¹ýÀÌ °èÃþÀû ºÐ·ùü°è°¡ Á¸ÀçÇÏ´Â »óÇ°µéÀÇ ±¸¸Å ÀÌ·Â °£ À¯»çµµ¸¦ ¸Å¿ì È¿°úÀûÀÌ°í ºü¸£°Ô ÃøÁ¤ÇÒ ¼ö ÀÖÀ½À» º¸ÀδÙ.
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(English Abstract)
In an online shopping mall or offline store, the products purchased by each customer over time form a purchase history of the customer. Also, in most cases, products have a hierarchical classification that represents their subcategories. In this paper, we propose a new similarity measure for purchase histories considering not only the purchase order of products but also the hierarchical classification of products. The proposed method extends the dynamic time warping similarity that is an existing representative similarity measure for sequences, to reflect the hierarchical classification of products. Unlike the existing method, where the similarity between the elements in two sequences is only 0 or 1 depending on whether the two elements are the same or not, the proposed method can assign any real number between 0 and 1 as the similarity between the two elements considering the hierarchical classification of elements. We also propose an efficient method for computing the proposed similarity measure. The proposed computation method uses the segment tree to evaluate the similarity between the two products in a hierarchical classification tree in an efficient manner. Through various experiments based on the real data, we show that the proposed method can measure the similarity between purchase histories of products with hierarchical classification in an exceedingly effective and efficient manner.
Å°¿öµå(Keyword) ±¸¸Å À̷   À¯»çµµ ÃøÁ¤   ½ÃÄö½º À¯»çµµ   °èÃþÀû ºÐ·ùü°è   purchase history   similarity measure   sequence similarity   hierarchical classification  
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