Research

My research interests include time series and econometric models, regression models, dimension reduction, multivariate analysis, and statistical learning. Below is a list of my published articles.

Publications

1. Herath, H. M. W. B., & Samadi, S. Y. (2025). Partial envelope and reduced-rank partial envelope vector autoregressive models. Journal of Computational and Graphical Statistics,1-15. https://doi.org/10.1080/10618600.2025.2528938

2. Herath, H. M. W. B. (2025). Dimension reduction in vector autoregressive models for macroeconomic applications. Statistics, 1–25. https://doi.org/10.1080/02331888.2025.2499921

3. Herath, H. M W. B., & Samadi, S. Y. (2025). Scaled envelope models for multivariate time series. Journal of Multivariate Analysis, 205, 105370. https://doi.org/10.1016/j.jmva.2024.105370

4. Samadi, S. Y., & Herath, H. M. W. B. (2023). Reduced-Rank Envelope Vector Autoregressive Model. Journal of Business & Economic Statistics, 42(3), 918–932. https://doi.org/10.1080/07350015.2023.2260862

Conference Presentations

• Joint Statistical Meetings (JSM) 2025, Nashville, TN.

• 2025 International Indian Statistical Association, University of Nebraska-Lincoln, NE.

• Symposium on Data Science and Statistics (SDSS) 2025, Salt Lake City, UT.

• Joint Statistical Meetings (JSM) 2024, Portland, OR.

• Conference on Statistical Practice (CSP) 2024, New Orleans, LA.

• Iowa State University 75th Anniversary Research Conference 2024, Ames, IA.

• Symposium on Data Science and Statistics (SDSS) 2023, St. Louis, MO.

• University of San Francisco Data Science Conference 2023, San Francisco, CA.

• Langenhop Lecture & Southern Illinois University Probability and Statistics Conference 2022, Carbondale, IL.

• Annual Meeting of the Illinois Section of the MAA 2022, Millikin University, Decatur, IL.

• Statistical and Applied Mathematical Sciences Institute (SAMSI) Numerical Analysis in Data Science Transition Virtual Workshop 2021, Virtual.

• Statistical and Applied Mathematical Sciences Institute (SAMSI) Dimension Reduction in Time Series Working Group V 2020-2021, Virtual.

• SSP Conference 2020, Michigan State University, East Lansing, MI.

• IL-MO Conference 2019, Southern Illinois University, Carbondale, IL.

• Graduate Research Conference 2019, Southern Illinois University, Carbondale, IL.

Seminar Presentations

• Drake University Research Seminar 2025, Des Moines, IA.

• Iowa State University Statistics Seminar 2024, Ames, IA.

• Worcester Polytechnic Institute Statistics Seminar 2023, Virtual.

• Southern Illinois University AMS Chapter Seminar, Carbondale, IL.

• Drake University Research Seminar 2022, Des Moines, IA.

Conference/Event Participations

• Academic Writing Skills Workshop, ACE Learning Excellence and Innovation 2023.

• Big Data Virtual Conference 2023, Harvard University.

• Writing & Publishing a High Impact (Q1) Journal Article Workshop 2022, ACE Learning Excellence and Innovation.

• NBER-NSF Time Series Virtual Conference 2022, Department of Economics, Boston University.

• Joint Statistical Meetings (JSM) 2021.

• CBMS Conference on Gaussian Random Fields, Fractals, SPDEs, and Extremes, University of Alabama in Huntsville.

• Numerical Analysis in Data Science SAMSI Workshop.

• NBER-NSF SBIES Conference on Bayesian Inference in Econometrics and Statistics, Washington University in St. Louis.

• Big Data Summit, University of Illinois Research Park, Champaign, Illinois.

• STATMOS Workshop for Spatial Statistics, University of Iowa.