On Research

Research Interests

• Mathematical Statistics and Decision Theory
• Applied Probability and Stochastic Processes
• Biostatistics, Survival Analysis, and Event-Time Analysis
• Recurrent Event Modeling and Analysis
• Reliability and Applications of Statistics in Engineering
• Simultaneous Inference and Multiple Testing
• Prediction Modeling and Prediction Machines
• Applications of Probability and Statistics in Finance
• High-Dimensional Inference and Machine Learning
• Foundational Issues in Statistics
• Applications of Mathematics, Probability and Statistics in Sports
• Applications of Statistics in the Sciences

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Google Scholar Profile

Google Scholar list with number of citations

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Some Math arXiv Preprints

• “Game, Set, Match:” Double Delight Watching a Grand Slam Tennis Match. 2026 (with Dip Das and Yuexuan Wu). View arXiv abstract
• The Search for Truth through Data: NP Decision Processes, ROC Functions, P-Functionals, Knowledge Updating and Sequential Learning. 2019. View arXiv abstract
• Maximum Agreement Linear Predictors. 2023 (with Taeho Kim, Pierre Chausse, Matteo Bottai, Gheorghe Doros, Mihai Giurcanu, and George Luta). View arXiv abstract

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Some Selected Publications

1. Baltazar-Aban, I. and Pena, E. (1995). Properties of Hazard-Based Residuals and Implications in Model Diagnostics. Journal of the American Statistical Association, 90, 185–197. View publication
2. Pena, E. (1998). Smooth Goodness-of-Fit Tests for Composite Hypothesis in Hazard-Based Models. The Annals of Statistics, 26, 1935–1971. View publication
3. Agustin, Ma. Zenia and Pena, E. (1999). Order Statistic Properties, Random Generation, and Goodness-of-Fit Testing for a Minimal Repair Model. Journal of the American Statistical Association, 94, 266–272. View publication
4. Agustin, M. and Pena, E. (1999). A Dynamic Competing Risks Model. Probability in the Engineering and Informational Sciences, 13, 333–358. View publication
5. Pena, E., Strawderman, R. and Hollander, M. (2001). Nonparametric Estimation with Recurrent Event Data. Journal of the American Statistical Association, 96, 1299–1315. View publication
6. Hollander, M. and Pena, E. (2004). Nonparametric Methods in Reliability. Statistical Science, 19, 644–651. View publication
7. Kvam, P. and Pena, E. (2005). Estimating Load-Sharing Properties in a Dynamic Reliability System. Journal of the American Statistical Association, 100, 262–272. View publication
8. Dukic, V. and Pena, E. (2005). Variance Estimation in a Model with Gaussian Submodels. Journal of the American Statistical Association, 100, 296–309. View publication
9. Pena, E. and Slate, E. (2006). Global Validation of Linear Model Assumptions. Journal of the American Statistical Association, 101, 341–354. View publication
10. Pena, E., Slate, E. and Gonzalez, R. (2007). Semiparametric Inference for a General Class of Models for Recurrent Events. Journal of Statistical Planning and Inference, 137, 1727–1747. View publication
11. Han, J., Slate, E. and Pena, E. (2007). Parametric latent class joint model for a longitudinal biomarker and recurrent events. Statistics in Medicine, 26, 5285–5302. View publication
12. Stocker, R. and Pena, E. (2007). A General Class of Parametric Models for Recurrent Event Data. Technometrics, 49, 210–220. View publication
13. Adekpedjou, A., Pena, E. and Quiton, J. (2010). Estimation and Efficiency with Recurrent Event Data under Informative Monitoring. Journal of Statistical Planning and Inference, 140, 597–615. View publication
14. Pena, E., Habiger, J. and Wu, W. (2011). Power-Enhanced Family Wise Error and False Discovery Rate Controlling Multiple Decision Functions. The Annals of Statistics, 39, 556–583. View publication
15. Habiger, J. and Pena, E. (2011). Randomized P-Values and Nonparametric Procedures in Multiple Testing. Journal of Nonparametric Statistics, 23, 583–604. View publication
16. Adekpedjou, A. and Pena, E. (2012). Semiparametric estimation with recurrent event data under informative monitoring. Journal of Nonparametric Statistics, 24, 733–752. View publication
17. Wu, W. and Pena, E. (2013). Bayes multiple decision functions. Electronic Journal of Statistics, 7, 1272–1300. View publication
18. Taylor, L. and Pena, E. (2014). Nonparametric estimation with recurrent competing risks data. Lifetime Data Analysis, 20, 514–537. View publication
19. Rahman, F., Lynch, J. and Pena, E. (2014). Nonparametric Bayes estimation of gap-time distribution with recurrent event data. Journal of Nonparametric Statistics, 26, 575–598. View publication
20. Pena, E. (2016). Asymptotics for a General Class of Recurrent Event Models. Journal of Nonparametric Statistics, 28, 716–735. View publication
21. Kindo, B., Wang, H. and Pena, E. (2016). Multinomial probit Bayesian additive regression trees. Stat, 5, 119–131. View publication
22. Liu, P. and Pena, E. (2016). Sojourning with the Homogeneous Poisson Process. The American Statistician, 70, 413–423. View publication
23. Pena, E. and Kim, T. (2019). Median confidence regions in a nonparametric model. Electronic Journal of Statistics, 13, 2348–2390. View publication
24. Bottai, M., Kim, T., Lieberman, B., Luta, G., Pena, E. (2022). On Optimal Correlation-Based Prediction. The American Statistician, 76, 313–321. View publication
25. Qiang, B. and Pena, E. (2023). Robust simultaneous estimation of location parameters. Statistics and Probability Letters, 193. View publication
26. Tong, L., Liu, P., and Pena, E. (2025). Joint dynamic models and statistical inference for recurrent competing risks, longitudinal marker, and health status. Electronic Journal of Statistics, 19(2), 3068–3133. View publication

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