丘政民 CHIOU, Jeng-Min

Distinguished Professor & Director

Institute of Statistics and Data Science, National Taiwan University

Email: jmchiou[at]ntu.edu.tw

Ph.D. in Statistics, University of California, Davis, USA

ASA Fellow, IMS Fellow

Research Interests

Functional data analysis

Clustering and unsupervised methods

Semi-parametric methods

Longitudinal data analysis 

Change point analysis

Traffic flow analysis and prediction/ITS

Biostatistics

Applied Statistics

Professional Experience

Distinguished Professor & Founding Director, Institute of Statistical Science, National Taiwan University (2022–present)

Distinguished Research Fellow, Institute of Statistical Science, Academia Sinica (2017–present)

Acting/Deputy Director, Institute of Statistical Science, Academia Sinica (2016–2017/2009–2013,2014–2016)

Associate/Full Research Fellow, Institute of Statistical Science, Academia Sinica (2004–2009/2009–2017)

Assistant/Associate Investigator, Division of Biostatistics and Bioinformatics, National Health Research Institutes (2000–2003/2003–2004)

Assistant Professor, Department of Mathematics, National Chung Cheng University (1998–2000)

Honors & Professional Services

Fellow, Institute of Mathematical Statistics (IMS) (2019)

Fellow, American Statistical Association (ASA) (2014)

Outstanding Service Award, International Chinese Statistical Association (ICSA) (2016)

Outstanding Research Awards, National Science & Technology Council (2009, 2014)

Investigator Awards, Academia Sinica (2010, 2016)

Panel Chair, Academic Discipline of Statistics, Ministry of Science & Technology (2014-2016)

Co-Editor, Statistica Sinica (2011-2014)

Managing Editor, Statistica Sinica (2008-2011)

Associate Editors:

 Annals of Institute of Statistical Mathematics (2023- ), Journal of the American Statistical Association (2020-2022), Computational Statistics & Data Analysis (2015-2021), Bernoulli (2014-2015), Journal of Chinese Statistical Association (2008-2014), Biometrics (2006-2010)

Areas of Research

Functional data analysis: Functional regression modeling and analysis, functional prediction, functional clustering and classification, linear manifold modeling, multivariate functional data analysis, functional change-point analysis

Semi-parametric statistical methods: Non-parametric quasi-likelihood, semi-parametric generalized estimating equations, single- and multiple-index models

Transportation research: Traffic flow prediction, traffic pattern analysis, incident detection, travel time estimation, missing value imputation for traffic data

Biostatistics and applications: Aging research, mortality forecasting, statistical analysis for neuroimaging, epidemiologic research

Selected Publications

Statistical methods in transportation research

• Chiou, J.-M. and Li, P.-L. (2024) Modeling curves and derivatives as predictors for traffic breakdown probabilities. The Annals of Applied Statistics 18(3), 2230-2253.
• Chiou, J.-M., Liou, H.-T. and Chen, W.-H. (2021) Modeling time-varying variability and reliability of freeway travel time using functional principal component analysis. IEEE Transactions on Intelligent Transportation Systems 22(1), 257-266. Impact Factor 2019: 6.319.
• Chiou, J.-M., Chen, Y.-T., and Hsing, T. (2019) Identifying multiple changes in mean functions for a functional data sequence with application to freeway traffic segmentation. The Annals of Applied Statistics 13, 1430-1463.
• Chiou, J.-M. (2012) Dynamical functional prediction and classification, with application to traffic flow prediction. The Annals of Applied Statistics 6, 1588-1614.
• Li, P.-L. and Chiou, J.-M.* (2021) Functional clustering and missing value imputation of traffic flow trajectories. Transportmetrica B: Transport Dynamics 9(1), 1-21.
• Chiou, J.-M., Zhang, Y.-C., Chen, W.-H. and Chang, C.-W. (2014) A functional data approach to missing value imputation and outlier detection for traffic flow data.  Transportmetrica B: Transport Dynamics 2(1), 106-129. 

Multiple changepoint analysis for functional data 

• Chen, Y.-T., Chiou, J.-M.*, and Huang, T.-M. (2023) Greedy segmentation for a functional data sequence. Journal of the American Statistical Association 118(542), 959-971. 
• Chiou, J.-M., Chen, Y.-T., and Hsing, T. (2019) Identifying multiple changes in mean functions for a functional data sequence with application to freeway traffic segmentation. The Annals of Applied Statistics 13, 1430-1463.

Multivariate functional and longitudinal data analysis 

• Chiou, J.-M. and Müller, H.-G. (2016) A pairwise interaction model for multivariate functional and longitudinal data. Biometrika 103, 371-396.  
• Chiou, J.-M., Yang, Y.-F. and Chen, Y.-T. (2016) Multivariate functional linear regression and prediction. Journal of Multivariate Analysis 146, 301-312.
• Chiou, J.-M. and Müller, H.-G. (2014) Linear manifold modeling of multivariate functional data. Journal of the Royal Statistical Society Series B-Statistical Methodology 76, 605-626.
• Chiou, J.-M., Chen, Y.-T. and Yang, Y.-F. (2014) Multivariate functional principal component analysis: A normalization approach. Statistica Sinica 24, 1571-1596. (Highly Cited Pape of WOS Core Collection)

Clustering, classification, and review of functional data

• Wang, J.-L., Chiou, J.-M., and Müller, H.-G. (2016) Functional data analysis. Annual Review of Statistics and Its Application 3, 257-295. (Highly Cited Pape of WOS Core Collection)
• Chiou, J.-M. and Li, P.-L. (2008) Correlation-based functional clustering via subspace projection. Journal of the American Statistical Association 103, 1684-1692. 
• Chiou, J.-M. and Li, P.-L. (2007) Functional clustering and identifying substructures of longitudinal data. Journal of the Royal Statistical Society Series B 69, 679-699.
• Li, P.-L. and Chiou, J.-M. (2011) Identifying cluster numbers for subspace projected functional data clustering.  Computational Statistics and Data Analysis 55, 2090-2103.

Prediction and regression analysis of functional and longitudinal data

• Chiou, J.-M. and Li, P.-L. (2024) Modeling curves and derivatives as predictors for traffic breakdown probabilities. The Annals of Applied Statistics 18(3), 2230-2253.
• Zhang, X., Chiou, J.-M.* and Ma, Y. (2018) Functional prediction through averaging estimated functional linear regression models. Biometrika 105, 945-962.
• Chiou, J.-M. (2012) Dynamical functional prediction and classification, with application to traffic flow prediction. The Annals of Applied Statistics 6, 1588-1614. 
• Chiou, J.-M. and Müller, H.-G. (2007) Diagnostics for functional regression via residual processes. Computational Statistics and Data Analysis 51, 4849-4863.
• Chiou, J.-M., Müller, H.-G., and Wang, J.-L. (2004) Functional response models. Statistica Sinica 14, 675-693. 
• Chiou, J.-M., Müller, H.-G. and Wang, J.-L. (2003) Functional quasi-likelihood regression models with smooth random effects.  Journal of the Royal Statistical Society Series B 65, 405-423. 
• Chiou, J.-M., Müller, H.-G., Wang, J.-L. and Carey, J. (2003) A functional multiplicative effects model for longitudinal data, with application to reproductive histories of female medflies. Statistica Sinica 13, 1119-1133. 
• Chiou, J.-M. and Ma, Y. and Tsai, C.-L. (2012) Functional random effect time-varying coefficient model for longitudinal data. Stat 1, 75-89.

Non-parmetric and semi-parametric regression methods

• Chiou, J.-M. and Müller, H.-G. (2005) Estimated estimating equations: semiparametric inference for clustered and longitudinal data. Journal of the Royal Statistical Society Series B 67, 531-553. 
• Ma, Y., Chiou, J.-M. and Wang, N. (2006) Efficient semiparametric estimator for heteroscedastic partially linear models. Biometrika 93, 75-84. 
• Chiou, J.-M. and Tsai, C.-L. (2006) Smoothing parameter selection in quasi-likelihood models. Journal of Nonparametric Statistics 18, 307-314.  
• Chiou, J.-M. and Müller, H.-G. (2004) Quasi-likelihood regression with multiple indices and smooth link and variance function. Scandinavian Journal of Statistics 31, 367-386. 
• Chiou, J.-M. and Müller, H.-G. (1999) Nonparametric quasi-likelihood. The Annals of Statistics 27, 34-64. 
• Chiou, J.-M. and Müller, H.-G. (1998) Quasi-likelihood regression with unknown link and variance functions. Journal of the American Statistical Association 93, 1376-1387. 

Statistical methods in cohort mortality research

• Chiou, J.-M. and Müller, H.-G. (2009) Modeling hazard rates as functional data for the analysis of cohort lifetables and mortality forecasting. Journal of the American Statistical Association 104, 572-585.
• Chiou, J.-M., Müller, H.-G. and Wang, J.-L. (2009) Discussion: Functional time series forecasting. Journal of the Korean Statistical Society 38, 213-215.

Statistical methods with applications to linguistic pitch, neuro-imaging, and gene expression research

• Aston, J.A.D, Chiou, J.-M. and Evans, J.E. (2010) Linguistic pitch analysis using functional principal component mixed effect models. Journal of the Royal Statistical Society Series C 59, 297-317.
• Chen, P.-Y., Chiou, J.-M., Yang, Y.-F., Chen, Y.-T., Hsieh, H.-L., Chang, Y.-L., Tseng, W.-Y. I. (2016) Heterogeneous Aging effects on functional connectivity in different cortical regions: A resting-state functional MRI study using functional data analysis. PLoS ONE 11(9): e0162028.
• Müller, H.-G., Chiou, J.-M. and Leng, X. (2008) Inferring gene expression dynamics via functional regression. BMC Bioinformatics 9:60.

Statistical methods in genetic epidemiology

• Chiou, J.-M., Liang, K.-Y. and Chiu, Y.-F. (2005) Multipoint linkage mapping using sibpairs: non-parametric estimation of trait effects with quantitative covariate. Genetic Epidemiology 28, 58-69. 
• Chiu, Y-F, Chiou, J-M, Liang, K-Y and Lee, C-Y (2010) Incorporation of covariates in simultaneous localization of two linked loci using affected relative pairs. BMC Genetics 11: 67.

Biostatistical applications, epidemiology, aging research 

• Wang, S.-L., Chiou, J.-M., Chen, C.-J.,Tseng, C.-H., Chou, W.-L. Wu, T.-N. and Chang, L. W. (2003) Prevalence of non-insulin-dependent diabetes mellitus and related vascular diseases in southwestern arseniasis-endemic and non-endemic areas in Taiwan. Environmental Health Perspectives 111, 155-159.
• Chiou, J.-M., Wang, S-L, Chen C-J, Deng, C-R, Lin, W. and Tai, T-Y (2005) Arsenic ingestion and increased microvascular disease risk: observations from the southwestern arseniasis-endemic area in Taiwan. International Journal of Epidemiology 34, 936-943.
• Wu, C-W, Chiou, J-M, Ko F-S., Lo, S-S, Chen, J-H, Liu, W-Y, and W-P, J. (2008) Quality of life after curative gastrectomy for gastric cancer in a randomized controlled trial. British Journal of Cancer 98, 54-59.
• Peng T-C, Chiou J-M, Chen T-F, Chen Y-C*, Chen J-H* (2023) Grip Strength and Sarcopenia Predict 2-Year Cognitive Impairment in Community-Dwelling Older Adults. Journal of the American Medical Directors Association 24(3), 292--298.
• Wang M-C, Chiou J-M, Chen Y-C *, Chen J-H* (2023) Association between olfactory dysfunction and cognitive impairment in dementia-free older adults: A prospective cohort study in Taiwan. Journal of Alzheimer’s Disease 96(4): 1477–1488.
• Müller, H.-G., Chiou, J.-M., Wang, J.-L. and Carey, J. (2002) Fertility and lifespan: late children enhance female longevity. Journal of Gerontology – Biol Sci Med Sci 57A, B202-B206.