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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ ³í¹®Áö B : ¼ÒÇÁÆ®¿þ¾î ¹× ÀÀ¿ë

Á¤º¸°úÇÐȸ ³í¹®Áö B : ¼ÒÇÁÆ®¿þ¾î ¹× ÀÀ¿ë

Current Result Document : 4 / 4

ÇѱÛÁ¦¸ñ(Korean Title) À¯ÀüÀÚ ¹ßÇö ¸ÞÆ®¸¯¿¡ ±â¹ÝÇÑ ¸ð¼öÀû ¹æ½ÄÀÇ À¯ÀÇ À¯ÀüÀÚ ÁýÇÕ °ËÃâ ºñ±³ ¿¬±¸
¿µ¹®Á¦¸ñ(English Title) A Comparative Study of Parametric Methods for Significant Gene Set Identification Depending on Various Expression Metrics
ÀúÀÚ(Author) ±èÀ翵   ½Å¹Ì¿µ   Jaeyoung Kim   Miyoung Shin  
¿ø¹®¼ö·Ïó(Citation) VOL 37 NO. 01 PP. 0001 ~ 0008 (2010. 01)
Çѱ۳»¿ë
(Korean Abstract)
ÃÖ±Ù ¸¶ÀÌÅ©·Î¾î·¹ÀÌ µ¥ÀÌÅ͸¦ ±â¹ÝÀ¸·Î µÎ °³ÀÇ »ùÇà ±×·ì°£¿¡ À¯ÀÇÇÑ ¹ßÇö Â÷À̸¦ ³ªÅ¸³»´Â »ý¹°ÇÐÀû ±â´É ±×·ìÀ» °ËÃâÇϱâ À§ÇÑ À¯ÀüÀÚ ÁýÇÕ ºÐ¼®(gene set analysis) ¿¬±¸°¡ ¸¹Àº ÁÖ¸ñÀ» ¹Þ°í ÀÖ´Ù. ±âÁ¸ÀÇ À¯ÀÇ À¯ÀüÀÚ °ËÃâ ¿¬±¸¿Í´Â ´Þ¸®, À¯ÀüÀÚ ÁýÇÕ ºÐ¼® ¿¬±¸´Â À¯ÀÇÇÑ À¯ÀüÀÚ ÁýÇÕ°ú À̵éÀÇ ±â´ÉÀû Ư¡À» ÇÔ²² °ËÃâÇÒ ¼ö ÀÖ´Ù´Â ÀåÁ¡ÀÌ ÀÖ´Ù. ÀÌ·¯ÇÑ ÀÌÀ¯·Î ÃÖ±Ù¿¡´Â PAGE, GSEA µî°ú °°Àº ´Ù¾çÇÑ Åë°èÀû ¹æ½ÄÀÇ À¯ÀüÀÚ ÁýÇÕ ºÐ¼® ¹æ¹ýµéÀÌ ¼Ò°³µÇ°í ÀÖ´Ù. ƯÈ÷, PAGEÀÇ °æ¿ì µÎ »ùÇà ±×·ì°£ÀÇ À¯ÀüÀÚ ¹ßÇö Â÷À̸¦ ³ªÅ¸³»´Â ½ºÄÚ¾îÀÇ ºÐÆ÷°¡ Á¤±Ô ºÐÆ÷ÀÓÀ» °¡Á¤ÇÏ´Â ¸ð¼öÀû Á¢±Ù ¹æ½ÄÀ» ÃëÇÏ°í ÀÖ´Ù. ÀÌ·¯ÇÑ ¹æ¹ýÀº GSEA µî°ú °°Àº ºñ¸ð¼öÀû ¹æ½Ä¿¡ ºñÇØ °è»ê·®ÀÌ Àû°í ¼º´ÉÀÌ ºñ±³Àû ¿ì¼öÇÑ ÀåÁ¡ÀÌ ÀÖ´Ù. ÇÏÁö¸¸, PAGE¿¡¼­ À¯ÀüÀÚ ¹ßÇö Â÷À̸¦ Á¤·®È­Çϱâ À§ÇÑ ¸ÞÆ®¸¯À¸·Î »ç¿ëÇÏ°í ÀÖ´Â AD(average difference)ÀÇ °æ¿ì, µÎ ±×·ì°£¿¡ Àý´ëÀû Æò±Õ ¹ßÇö Â÷À̸¸À» °í·ÁÇϱ⠶§¹®¿¡ ½ÇÁ¦ À¯ÀüÀÚÀÇ ¹ßÇö°ª Å©±â³ª ºÐ»êÀÇ Å©±â¿¡ µû¸¥ »ó´ëÀû Á߿伺À» ¹Ý¿µÇÏÁö ¸øÇÏ´Â ¹®Á¦°¡ ÀÖ´Ù. º» ³í¹®¿¡¼­´Â À̸¦ º¸¿ÏÇϱâ À§ÇØ ½ÇÁ¦ À¯ÀüÀÚÀÇ ¹ßÇö°ª Å©±â³ª ±×·ì ³» »ùÇõéÀÇ ºÐ»ê Á¤º¸ µîÀ» ½ºÄÚ¾î °è»ê¿¡ ÇÔ²² ¹Ý¿µÇÏ´Â WAD(weighted average difference), FC(Fisher¡¯s criterion), ±×¸®°í Abs_SNR(Absolute value of signal-to-noise ratio)À» ¸ð¼öÀû ¹æ½ÄÀÇ À¯ÀüÀÚ ÁýÇÕ ºÐ¼®¿¡ Àû¿ëÇÏ°í ÀÌ¿¡ µû¸¥ À¯ÀÇ À¯ÀüÀÚ ÁýÇÕ °ËÃâ °á°ú¸¦ ½ÇÇèÀ» ÅëÇØ ºñ±³ ºÐ¼®ÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
Recently lots of attention has been paid to gene set analysis for identifying differentially expressed gene-sets between two sample groups. Unlike earlier approaches, the gene set analysis enables us to find significant gene-sets along with their functional characteristics. For this reason, various novel approaches have been suggested lately for gene set analysis. As one of such, PAGE is a parametric approach that employs average difference (AD) as an expression metric to quantify expression differences between two sample groups and assumes that the distribution of gene scores is normal. This approach is preferred to non-parametric approach because of more effective performance. However, the metric AD does not reflect either gene expression intensities or variances over samples in calculating gene scores. Thus, in this paper, we investigate the usefulness of several other expression metrics for parametric gene-set analysis, which consider actual expression intensities of genes or their expression variances over samples. For this purpose, we examined three expression metrics, WAD (weighted average difference), FC (Fisher¡¯s criterion), and Abs_SNR (Absolute value of signal-to-noise ratio) for parametric gene set analysis and evaluated their experimental results.
Å°¿öµå(Keyword) ¸¶ÀÌÅ©·Î¾î·¹ÀÌ   À¯ÀüÀÚ ÁýÇÕ ºÐ¼®   ¸ð¼öÀû ¹æ½Ä   Microarray   gene set analysis   parametric methods  
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