for entertaining my endless questions and for the many fruitful and engaging discussions. I would also like to thank those at MIT outside of the ACDL including Matthew Li and Adam Rosenfield, and my dear friends and family back home for their continual support. I am grateful for the financial support from the Air Force Office of Scientific Research (AFOSR) MURI on "Managing multiple information sources of multi-physics systems," Program Officer Jean-Luc Cambier, Award Number FA9550-15-1-0038. Finally, I could not be where I am today without the help and guidance of my family. I dedicate this thesis to my parents who have always supported all of my academic endeavors. I love you both.