Publications

Published/ Accepted

• Bhattacharjee, S., Li, B., Xue, L. (2024). Nonlinear global Fréchet regression for random objects via weak conditional expectation. Accepted, Annals of Statistics (pdf).
  
• Bhattacharjee, S., and Müller, H. G. (2023). Single index Fréchet regression. Annals of Statistics,51(4), 1770-1798 (pdf).
  
• Bhattacharjee, S., and Müller, H. G. (2022). Concurrent object regression. Electronic Journal of Statistics, 16(2), 4031-4089 (pdf).
  
• Dubey, P., Chen, Y., Gajardo, Á ., Bhattacharjee, S., Carroll, C., Zhou, Y., and Müller, H. G. (2022). Learning delay dynamics for multivariate stochastic processes, with application to the prediction of the growth rate of COVID-19 cases in the United States. Journal of Mathematical Analysis and Applications, 514(2), 125677 (pdf).
  
• Bhattacharjee, S., Liao S., Paul, D., and Chaudhuri, S. (2021). Inference on the dynamics of COVID-19 in the USA. Nature- Scientific Reports, 12(1), 1-15 (pdf).
  
• Bhattacharjee, S., Liao, S., Paul, D., and Chaudhuri, S. (2021). Taming the pandemic by doing the mundane. Managing Complexity and COVID-19 (pp. 62-82), Routledge (pdf).
  
• Carroll, C., Bhattacharjee, S., Chen, Y., Dubey, P., Fan, J., Gajardo, Á ., Zhou, X., Müller, H. G., and Wang, J-L. (2020). Time dynamics of COVID-19. Nature- Scientific Reports, 10(1), 21040 (pdf).
  

Preprints

• Bhattacharjee, S. and Müller, H. G. (2023-). Mixed-effects modeling of longitudinal random objects. ArXiv preprint, Under minor revision for JASA (pdf).
  

Ongoing work

• Bhattacharjee, S., Li, B., Xue, L. (2023-). Causal inference on distributional data with continuous treatments.
• Arya, S., Bhattacharjee, S., and Sriperambudur, B. (2023-). Index models for contextual bandit problems.
• Zhang, Q. and Bhattacharjee, S. (2023-). Geodesic set distribution regression.
• Bhattacharjee, S. and Bandyopadhyay, D. (2024–). Test of homogeneity and independence of distributions of DTI data.

Software

• fdapace: Functional Data Analysis and Empirical Dynamics- 2019 – present (R package)
  Contributing author
  
• frechet: Statistical Analysis for Random Objects and Non-Euclidean Data- 2019 – present
  (R package)
  Contributing author
  
• fdaconcur: Concurrent Regression and History Index Models for Functional Data- 2021 – present
  (R package)
  Creator, maintainer, and contributing author
  
• SDRReg: Dimension Reduction and Regression Methods for High-dimensional and Complex (Non-Euclidean) Data- 2023 – present
  (R package, Test version)
  Creator, maintainer, and contributing author