LOG IN⠴ݱâ

  • ȸ¿ø´ÔÀÇ ¾ÆÀ̵ð¿Í Æнº¿öµå¸¦ ÀÔ·ÂÇØ ÁÖ¼¼¿ä.
  • ȸ¿øÀÌ ¾Æ´Ï½Ã¸é ¾Æ·¡ [ȸ¿ø°¡ÀÔ]À» ´­·¯ ȸ¿ø°¡ÀÔÀ» ÇØÁֽñ⠹ٶø´Ï´Ù.

¾ÆÀ̵ð ÀúÀå

   

¾ÆÀ̵ð Áߺ¹°Ë»ç⠴ݱâ

HONGGIDONG ˼
»ç¿ë °¡´ÉÇÑ È¸¿ø ¾ÆÀ̵ð ÀÔ´Ï´Ù.

E-mail Áߺ¹È®ÀÎ⠴ݱâ

honggildong@naver.com ˼
»ç¿ë °¡´ÉÇÑ E-mail ÁÖ¼Ò ÀÔ´Ï´Ù.

¿ìÆí¹øÈ£ °Ë»ö⠴ݱâ

°Ë»ö

SEARCH⠴ݱâ

ºñ¹Ð¹øÈ£ ã±â

¾ÆÀ̵ð

¼º¸í

E-mail

ÇмúÀÚ·á °Ë»ö

ºÐ»êºñ °ËÁ¤¿¡ ´ëÇÑ ½ºÆåÆ®·²ºÐ¼®

  • À±Á¾ÀÎ ¹é¼®´ëÇб³ °æ»óÇкΠ±³¼ö
º» ¿¬±¸´Â Áøµ¿¼ö¿µ¿ª¿¡¼­ ºÐ»êºñ°ËÁ¤À» ºÐ¼®ÇÏ¿´´Ù. ºÐ»êºñ °ËÁ¤¿¡ ÀÌ¿ëµÇ´Â ÇÊÅÍ´Â °¡»êÇÊÅÍÀε¥ ÀÌ¿¡ ´ëÇÑ ºÐ¼®Àº ½Ã°£¿µ¿ª¿¡¼­º¸´Ù Áøµ¿¼ö¿µ¿ª¿¡¼­ »ó´ëÀûÀ¸·Î ´õ ¿ëÀÌÇÏ°Ô Àü°³ÇÒ ¼ö ÀÖ´Ù. °á°úÀûÀ¸·Î Áøµ¿¼ö¿µ¿ª¿¡¼­ ºÐ»êºñÀÇ °ø½ÄÀ» µµÃâÇÏ¿´°í À̸¦ ÀÌ¿ëÇÏ¿© ºÐ»êºñ°ËÁ¤ÀÌ Áö´Ï´Â Àǹ̸¦ º¸´Ù ¸íÈ®È÷ ¼³¸íÇÒ ¼ö ÀÖ¾ú´Ù. ÀÌ °á°ú¸¦ µÎ °¡Áö ¹®Á¦¿¡ Àû¿ëÇÏ¿´´Ù. ù° Summers(1986) µîÀÇ ¿¬±¸¿¡¼­ ÁöÀûµÇ¾ú´ø ·£´ý¿öÅ© ±Í¹«°¡¼³ °ËÁ¤ÀÇ ³·Àº °ËÁ¤·ÂÀ» ¼³¸íÇÏ°íÀÚ ÇÏ¿´´Ù. ±× ÀÌÀ¯´Â Áö¼Ó¼ºÀÌ Å« ÀϽÃÀû ¼ººÐÀ» ¸ðÇüÈ­Çϴµ¥ ÀÌ¿ëµÇ¾ú´ø AR(1) ´ë¸³°¡¼³ÀÌ ·£´ý¿öÅ© ±Í¹«°¡¼³°ú ½Äº°Çϱ⠾î·Á¿ü±â ¶§¹®ÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. µÑ° ±â¼úÀû ºÐ¼®¹æ¹ýÀÇ ÇϳªÀÎ À̵¿Æò±Õ¼±¿¡ È°¿ëµÉ ¼ö ÀÖ´Â °¡´É¼ºÀ» Á¦½ÃÇÏ¿© º¸¾Ò´Ù. À̸¦ À§Çؼ­´Â ÀûÀýÇÑ ¼øȯÁֱ⸦ ã´Â °ÍÀÌ ÇÊ¿äÇÒ ÅÙµ¥ ÀÌ ¶§ ºÐ»êºñ°¡ È°¿ëµÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù.
ºÐ»êºñ,½ºÆåÆ®·²ºÐ¼®,°¡»êÇÊÅÍ,À̵æ,·£´ý¿öÅ©°¡¼³,±â¼úÀû ºÐ¼®

Spectral Analysis of the Variance Ratio Test

  • Jong-In Yoon
This study analyzes the variance ratio test in the frequency domain. Using the concept of the summation filter, its formulation is clearer in the frequency domain rather than in the time domain. We can formulate the variance ratio and explain its implications in the frequency domain. Two applications of the spectral analysis are presented. First, we try to explain the low power problem of the random walk hypothesis, suggested by Summers (1986). It is due to that AR(1) alternative hypothesis is not identifiable with the random walk null hypothesis in formulating the persistent transitory component. Second, we analyze the applicability of the technical methods such as the moving average analysis. It is shown that the variance ratio can be used in selecting cycles with the appropriate period.