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Çѱ¹µµ·ÎÇÐȸ / v.9, no.3, 2007³â, pp.21-28
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½Ã°£ÀÚ·áÀÇ °ø°£È¸¦ ÅëÇÑ Àϱ³Åë·® °áÃø´ëü ¹æ¹ý·Ð ¿¬±¸
( Missing Imputation Methodologies for Daily Traffic Counts by Transforming Time Data into Spatial Data ) |
| ÇãÅ¿µ;¿ÀÁÖ»ï; Çѱ¹Çؾç´ëÇб³ ³ª³ëµ¥ÀÌÅͽýºÅÛÇкÎ;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø µµ·Î¿¬±¸ºÎ;
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| º» ¿¬±¸¿¡¼´Â °áÃøµÈ Àϱ³Åë·®ÀÇ ´ëü¸¦ À§ÇÏ¿© ±³Åë°øÇп¡¼ ¸¹ÀÌ È°¿ëµÇ°í ÀÖ´Â ±âÁ¸ÀÇ ¼±Çü³»»ð¹ý¿¡ °ø°£»ó°ü¼º ±â¹ýÀ» °í·ÁÇÑ »õ·Î¿î ¼±Çü³»»ð¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. Àϱ³Åë·®°ú °°ÀÌ ½Ã°£Àû Ư¼ºÀ» Áö´Ñ ÀڷḦ °ø°£À§¿¡ ¹èÄ¡ÇÏ¿© °ø°£Àû »ó°ü¼ºÀ» °í·ÁÇÒ ¼ö ÀÖµµ·Ï ÇÏ¿´´Ù. °ø°£»ó°ü¼ºÀ» ÃøÁ¤Çϱâ À§ÇÏ¿© Àϱ³Åë·®ÀÇ ¼øÈ¯¼ºÀ» °¨¾ÈÇÏ¿© °°Àº ÁÖÀÇ ¿äÀϰ£ »ó°ü¼º°ú ÁÖº° °°Àº ¿äÀÏÀÇ »ó°ü¼ºÀ» ³ªÅ¸³»´Â ÁöÇ¥·Î¼ Moran Index¸¦ »ç¿ëÇÏ¿´´Ù. ½ÇÁ¦ ºÐ¼®À» À§ÇÏ¿© Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø¿¡¼ Á¦°øÇÑ 2004³â 11¿ùÀÇ 28Àϰ£ÀÇ Àϱ³Åë·® ÀڷḦ $4{ imes}7$ °ÝÀÚ ÇüÅ·Π¹èÄ¡ÇÏ¿© ÀϺ° ±³Åë·®ÀڷḦ °ø°£È ½ÃÄÑ °ø°£ »ó°ü¼ºÀ» »ìÆìº¸¾ÒÀ¸¸ç, ¿©·¯ °¡Áö Åë°èÀû ÁöÇ¥¸¦ ÅëÇÏ¿© °ø°£ ¼±Çü³»»ð¹ýÀÇ ¿ì¼ö¼ºÀ» È®ÀÎÇÏ¿´´Ù. |
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| We suggest a new spatial linear interpolation method to substitute linear interpolation method which widely used in transportation engineering to impute the missing daily traffic volume. We layout daily traffic volume which is time series data over the virtual lattice space to consider the spatial correlation. We used Moran Index to evaluate the spatial correlations among daily traffic volume in same week and same date traffic volume by week considering the circularity of daily traffic volume. For real application, we used daily traffic volume on November, 2004 provided by Korea Institute of Construction Technology(KICT) and transformed daily traffic volume to 4 times 7 virtual lattice space to reflect the spatial correlation. Finally we showed that the spatial linear interpolation method has good performance for missing data imputation based on MAPE, RMSE, and Theil's U criteria. |
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| Ű¿öµå |
| °ø°£»ó°ü¼º;ÀÌ¿ôÁ¤º¸;Àϱ³Åë·®;spatial correlation;moran index;neighborhood relation; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.9, no.3, 2007³â, pp.21-28
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200735836675094)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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