Nonparametric Statistics on Size-and-Shape 
        Manifolds and 3D Protein Data Analysis



Recently developed data analysis on 3D size-and-shape manifolds via multidimensional 
scaling (MDS) techniques are relevant in Bioinformatics and Medical Imaging.
In this talk, after an introduction to extrinsic means on manifolds, we derive the 
connection between MDS and 3D mean size-and-shape analysis, and show some computational 
results for X-Ray crystallography protein data. This is joint work with Jinfeng Zhang and Jing Su.