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ÇѱÛÁ¦¸ñ(Korean Title) |
K-NN°ú ÃÖ´ë ¿ìµµ ÃßÁ¤¹ýÀ» °áÇÕÇÑ ¼ÒÇÁÆ®¿þ¾î ÇÁ·ÎÁ§Æ® ¼öÄ¡ µ¥ÀÌÅÍ¿ë °áÃø°ª ´ëÄ¡¹ý |
¿µ¹®Á¦¸ñ(English Title) |
A Missing Data Imputation by Combining K Nearest Neighbor with Maximum Likelihood Estimation for Numerical Software Project Data |
ÀúÀÚ(Author) |
À̵¿È£
À±°æ¾Æ
¹èµÎȯ
Dong-Ho Lee
Kyung-A Yoon
Doo-Hwan Bae
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¿ø¹®¼ö·Ïó(Citation) |
VOL 36 NO. 04 PP. 0273 ~ 0282 (2009. 04) |
Çѱ۳»¿ë (Korean Abstract) |
¼ÒÇÁÆ®¿þ¾î ÇÁ·ÎÁ§Æ® µ¥ÀÌÅ͸¦ ÀÌ¿ëÇÑ °¢Á¾ ºÐ¼®¡¤¿¹Ãø ¸ðµ¨ »ý¼º½Ã Á÷¸éÇÏ´Â ¹®Á¦ Áß Çϳª´Â µ¥ÀÌÅÍ¿¡ Æ÷ÇÔµÈ °áÃø°ªÀ̸ç ÀÌ¿¡ ´ëÇÑ È¿°úÀûÀÎ ¹æ¾ÈÀº °áÃø°ª ´ëÄ¡¹ýÀÌ´Ù. ´ëÇ¥ÀûÀÎ °áÃø°ª ´ëÄ¡¹ýÀÎ K ÃÖ±ÙÁ¢ ÀÌ¿ô ´ëÄ¡¹ýÀº ´ëÄ¡°úÁ¤¿¡¼ °áÃø°ªÀ» Æ÷ÇÔÇÏ´Â ÀνºÅϽºÀÇ °üÃøÁ¤º¸¸¦ È°¿ëÇÏÁö ¸øÇÑ´Ù´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â ÀÌ·¯ÇÑ ´ÜÁ¡À» ±Øº¹Çϱâ À§ÇØ K ÃÖ±ÙÁ¢ ÀÌ¿ô ´ëÄ¡¹ý°ú ÃÖ´ë ¿ìµµ ÃßÁ¤¹ýÀ» °áÇÕÇÑ »õ·Î¿î ¼ÒÇÁÆ®¿þ¾î ÇÁ·ÎÁ§Æ® ¼öÄ¡ µ¥ÀÌÅÍ¿ë °áÃø°ª ´ëÄ¡¹ýÀ» Á¦¾ÈÇÑ´Ù. ¶ÇÇÑ °áÃø°ª ´ëÄ¡¹ýÀÇ Á¤È®µµ¸¦ ºñ±³Çϱâ À§ÇÑ »õ·Î¿î Ãøµµ¸¦ ÇÔ²² Á¦¾ÈÇÑ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Missing data is one of the common problems in building analysis or prediction models using software project data. Missing imputation methods are known to be more effective missing data handling method than deleting methods in small software project data. While K nearest neighbor imputation is a proper missing imputation method in the software project data, it cannot use non-missing information of incomplete project instances. In this paper, we propose an approach to missing data imputation for numerical software project data by combining K nearest neighbor and maximum likelihood estimation; we also extend the average absolute error measure by normalization for accurate evaluation. Our approach overcomes the limitation of K nearest neighbor imputation and outperforms on our real data sets.
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Å°¿öµå(Keyword) |
°áÃø°ª ´ëÄ¡¹ý
K ÃÖ±ÙÁ¢ ÀÌ¿ô ´ëÄ¡¹ý
ÃÖ´ë ¿ìµµ ÃßÁ¤¹ý
¼ÒÇÁÆ®¿þ¾î ÇÁ·ÎÁ§Æ® µ¥ÀÌÅÍ
missing data imputation
K-NN
maximum likelihood estimation
software project data
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