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--- seminars:stat:201105 [2020/10/29 00:36] – created qyu
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+<WRAP centeralign>##Statistics Seminar##\\ Department of Mathematical Sciences</WRAP>
+<WRAP 70% center>
+^  **DATE:**|Thursday, November 5, 2020 |
+^  **TIME:**|1:15pm -- 2:15pm |
+^  **LOCATION:**|ZOOM meeting |
+^  **SPEAKER:**|Yifei Zhang, Binghamton University |
+^  **TITLE:**|Comparison of shape quantification methods for genomic study  |
+</WRAP>
+\\
+<WRAP center box 80%>
+<WRAP centeralign>**Abstract**</WRAP>
+Among geometric morphometrics methods, elliptic Fourier analysis and
+semi-landmark analysis are often used for the quantification of biological
+shape variations. Elliptic Fourier analysis is an approximation process of
+a shape contour while semi-landmark is a method of superimposed points in
+which the difference of multiple contour positions are minimized. These two
+methods will give us two different responses. Moreover, different direction
+standardization and different scaling procedures can also lead to different
+responses. This paper showed how different combinations of geometric
+morphometrics methods and standardization & scaling procedures affect
+principal component scores, average shape, prediction accuracy and
+association study by analyzing the association between Sorghum seed's shape
+variations and genome-wide single-nucleotide polymorphisms (SNP).
+</WRAP>