William W.S. Wei


  • Statistical Science
Office: Speakman Hall 330
Phone: 215.204.8459
Email: wwei@temple.edu

Dr. Wei is Professor of Statistics and former Director of Graduate Programs in Statistics at Temple University in Philadelphia, PA. He has been on the faculty since 1974. He earned his B.A. in Economics from the National Taiwan University (1966), B.A. in Mathematics from the University of Oregon (1969), and M.S. (1972) and Ph.D. (1974) in Statistics from the University of Wisconsin – Madison. From 1982-87, he was the Chair of the Department of Statistics at Temple University. He was Visiting Professor of Nankai University in 1988-1989, Visiting Professor of National Sun Yat-Sen University in 1990, Visiting professor of National University of Colombia, in Bogota, Colombia in 1994, Visiting Professor of National Chiao Tung University and Visiting Professor of National Taiwan University in 2010-2011. His research interest includes time series analysis, forecasting methods, statistical modeling, high dimension reduction, and applications of statistics in business and economics. He has developed new methodology in seasonal adjustment, aggregation and disaggregation, outlier detection, robust estimation, and vector time series analysis. Some of his most significant contributions include extensive research on the effects of aggregation, methods of measuring information loss due to aggregation, new stochastic procedures of performing data disaggregation, model-free outlier detection techniques, robust methods of estimating autocorrelations, and statistics for analyzing multivariate time series. He has successfully supervised many Ph.D. students. Most of his Ph.D. advisees found teaching positions in universities when graduating from Temple. His book, Time Series Analysis-Univariate and Multivariate Methods, has been translated in other languages and heavily cited by researchers worldwide. He is a Fellow of the ASA (American Statistical Association), a Fellow of the RSS (Royal Statistical Society), an Elected Member of the ISI (International Statistics Institute), the 2002 President of ICSA (International Chinese Statistical Association), and the 2014 and 2015 President of Taiwanese Hakka Associations of America. He is the 2014 Lifetime Achievement Award Recipient and the Recipient of the 2016 Musser Award for Excellence in Research of Temple University Fox School of Business. He is an Associate Editor of the Journal of Forecasting and the Journal of Applied Statistical Science.