Xianhong Xie

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Working Experience:

• 2000 Fall - Present, Research Assistant of Prof. Grace Wahba
• 1999 Fall, Teaching Assistant of Prof. Kam-Wah Tsui, Stat 301
• 1996 Summer - 1997, Part-time Programmer, Tianjin, China

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Interesting Links:

• Sina Net
• MIT BBS
• Google
• Emacs  (my favorite all-purpose editor, see my .emacs for NTEmacs)
• Perl  /  Python  (programming languages mainly for text file handling)
• Software Tools   (including stuff for SSH, file downloading and more)

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Spline Stuff:

• R Tutorial on Smoothing Spline
• R Tutorial on Thin Plate Spline
• Splines on the Sphere (my small R package sspline)
  • a sample run of the package (result in ps/pdf/jpg)
  • documentation of the package (pdf)
  • pre-compiled version for Windows (download here)
• Matlab Interface for GCVSPL (my toolbox gcvsplmat)
  • differences between my version and ANTONIADIS′s
• Thin Plate Spline Toolboxes (based on GCVPACK)
  • R interface gcvpack (download here)
  • Matlab interface (download here)

Presentations:

• Using Condor Effectively for Statistical Computing, Feb 2005. Department of Statistics, UW-Madison (pdf/4up pdf/4up ps)
• Thin Plate Spline Thresholding: A New Method for Magnetic Resonance Image Segmentation, Feb 2005. W. M. Keck Laboratory, UW-Madison (pdf/ps)

Publication:

• Xie, X., Chung, M. K., Wahba, G. Magnetic Resonance Image Segmentation with Thin Plate Spline Thresholding (html) 2005. Accepted for presentation at the 11th Annual meeting of the Organization for Human Brain Mapping, Toronto.
• Carew, J., Wahba, G., Xie, X., Nordheim, E., and Meyerand, M. Optimal Spline Smoothing of fMRI Time Series by Generalized Cross-Validation (pdf)TR 1058, June 2002. In NeuroImage 18, 950-961, 2003.