...Statistical Methods in Credit Risk Modeling by Aijun Zhang A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Statistics) in The University of Michigan 2009 Doctoral Committee: Professor Vijayan N. Nair, Co-Chair Agus Sudjianto, Co-Chair, Bank of America Professor Tailen Hsing Associate Professor Jionghua Jin Associate Professor Ji Zhu c Aijun Zhang 2009 All Rights Reserved To my elementary school, high school and university teachers ii ACKNOWLEDGEMENTS First of all, I would express my gratitude to my advisor Prof. Vijay Nair for guiding me during the entire PhD research. I appreciate his inspiration, encouragement and protection through these valuable years at the University of Michigan. I am thankful to Julian Faraway for his encouragement during the first years of my PhD journey. I would also like to thank Ji Zhu, Judy Jin and Tailen Hsing for serving on my doctoral committee and helpful discussions on this thesis and other research works. I am grateful to Dr. Agus Sudjianto, my co-advisor from Bank of America, for giving me the opportunity to work with him during the summers of 2006 and 2007 and for offering me a full-time position. I appreciate his guidance, active support and his many illuminating ideas. I would also like to thank Tony Nobili, Mike Bonn, Ruilong He, Shelly Ennis, Xuejun Zhou, Arun Pinto, and others I first met in 2006 at the Bank. They all persuaded me to jump into the...
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