**About the Editors**

**Wing-Keung Wong** obtained his Ph.D. from the University of Wisconsin-Madison, the USA with a major in Business Statistics (Statistics and Finance) and obtained his Bachelor degree from the Chinese University of Hong Kong, Hong Kong, with a major in Mathematics and a double minor in Economics and Statistics. Currently, he is a Chair Professor at the Department of Finance, Asia University. He was a Full Professor at the Department of Economics, Hong Kong Baptist University, and Deputy Director at Risk Management Institute, National University of Singapore.

Professor WONG appears in "Who's Who in the World" and gets Albert Nelson Marquis Lifetime Achievement Award. 2017, Marquis Who's Who. His Erdos number is 3. He is ranked top 1% by Social Science Research Network and in the list of top Taiwan economists and Asian economists and top economists by RePEc. He has published more than three hundred papers including papers published in some top journals. He has more than 9400 citations in Google Scholar, more than 6900 citations in Researchgate, and more than 3200 citations in Mendeley. His h-index is 54, (40 since 2015) and i10-index is 205, (182 since 2015) by Google Scholar citation.

He has been serving international academies, Government, society, and universities, providing consultancy to several Government departments and corporations, and giving lectures and seminars to several universities. For example, he has been serving as editor, gues<sup>t</sup> leading editor, advisor, associate editor for some international journals, appointed as an advisor/member of various international associations/institutes, serving as a referee for many journals/conferences, supervising solely or jointly several overseas graduate students, appointed as an external reviewer and external examiner by other universities, and invited by many universities/institutions to present papers or conduct seminars.

**Xu Guo** is an Associate Professor in School of Statistics, Beijing Normal University. He was an Assistant Research Professor in the Department of Statistics, Pennsylvania State University from Sep. 2018 to Feb. 2020. He go<sup>t</sup> his Ph.D. degree from the Department of Mathematics, Hong Kong Baptist University in 2014. His research interests are model specification testing, missing data, semiparametric regression analysis, risk managemen<sup>t</sup> and decision making under risk and uncertainty. Up to now, he has published more than 30 papers in numerous international journals, such as Journal of the Royal Statistical Society: Series B, Biometrika, Journal of Multivariate Analysis, Computational Statistics & Data Analysis, Insurance: Mathematics and Economics, Economics Letters, Economic Modelling, North American Journal of Economics and Finance, etc.

**Sergio Ortobelli Lozza** is a full professor in Mathematical Finance at the University of Bergamo. He holds a Ph.D. in Computational Methods for Financial and Economic Forecasting and Decisions from the University of Bergamo. His research, published in various academic journals in mathematics and finance, focuses on the application of probability theory and operational research to portfolio theory, risk management, and option theory. He taught numerous courses at the Universities of Bergamo, Calabria and Milan, including basic and advanced calculus, measure theory, stochastic processes, portfolio theory, and advanced mathematical finance. From 1999 till 2020 he wrote more than 170 refereed scientific works together with several well known Italian and international professors. Some of these papers have been well recognized by the scientific community.
