Functional and Distributional Data Analysis
Modeling of Massive and Complex Data
High-Dimensional Statistical Inference
Nonparametric Statistical Methods
Wearables
Neuroimaging
Health Sciences
I have broad research interests in theoretical and methodological research in Statistics, motivated by fundamental applications in wearables, neuroimaging, and other related health sciences.
You can find the list of publications on Google Scholar by clicking here.
† indicates graduate student under supervision.
Pratim Guha Niyogi, Ping-Shou Zhong, and Xiaohong Joe Zhou. “Functional varyingcoefficient model under heteroskedasticity with application to DTI data”. In: Statistica Sinica (20xx). Forthcoming. doi: https://doi.org/10.48550/arXiv.2207.08373.
Pratim Guha Niyogi and Subhra Sankar Dhar. “Identifying arbitrary transformation between the slopes in scalar-on-function regression”. In: Electronic Journal of Statistics 20.1 (2026), pp. 2211–2253. doi: https://doi.org/10.1214/26-EJS2535.
Pratim Guha Niyogi, Muraleetharan Sanjayan, Rahul Ghosal, Jeff Goldsmith, Kathryn C Fitzgerald, Ellen M Mowry, and Vadim Zipunnikov. “Quantifying observable movement reserve in multiple sclerosis via upper diurnal activity quantiles”. In: Multiple Sclerosis Journal (2026), pp. 233–241. doi: https://doi.org/10.1177/13524585251398689.
Pratim Guha Niyogi and Ping-Shou Zhong. “Quadratic inference with dense functional responses”. In: Journal of Multivariate Analysis 207 (2025), p. 105400. doi: https://doi.org/10.1016/j.jmva.2024.105400.
Pratim Guha Niyogi, Martin A Lindquist, and Tapabrata Maiti. “A tensor based varyingcoefficient model for multi-modal neuroimaging data analysis”. In: IEEE Transactions on Signal Processing 72 (2024), pp. 1607–1619. doi: https://doi.org/10.1109/TSP.2024.3375768.
Adhidev Biswas, Suman Majumder, Pratim Guha Niyogi, and Ayanendranath Basu. “A Weighted Likelihood Approach to Problems in Survival Data”. In: Sankhya B 83.2 (2021), pp. 466–492. doi: https://doi.org/10.1007/s13571-019-00214-w.
Adhidev Biswas, Pratim Guha Niyogi, Suman Majumder, Subir K Bhandari, Abhik Ghosh, and Ayanendranath Basu. “Theoretical properties of a new weighted likelihood estimator for right censored data”. In: Tech. Rep. ISRU/2018/2, Interdisciplinary Statistical Research Unit, Indian Statistical Institute (2018). url: https://www.isical.ac.in/~isru/tr18a.pdf.
Angeliki G. Filippatou, Muraleetharan Sanjayan, Blake Dewey, Evan Johnson, Pratim Guha Niyogi, Yasser Fadlallah, Safiya Duncan, Chelsea Wyche, Ela Moni, Vadim Zipunnikov, Ellen M. Mowry, and Kathryn C. Fitzgerald. “Accelerometry-derived activity fragmentation as a predictor of brain atrophy and disability progression in multiple sclerosis”. In: Multiple Sclerosis Journal (20xx). Accpeted. doi: https://doi.org/10.1177/13524585261435926.
Kathryn C. Fitzgerald, Muraleetharan Sanjayan, Blake E. Dewey, Pratim Guha Niyogi, Nicole Bou Rjeily, Yasser Fadlallah, Alice Delaney, Alexandra Zambriczki Lee, Safiya Duncan, Chelsea Wyche, Peter A. Calabresi, Vadim Zipunnikov, and Ellen M. Mowry. “Association of Changes in Activity Patterns with Brain Atrophy and Disability Progression in People with Multiple Sclerosis”. In: Neurology 106.7 (2026), e214678. doi: https : //doi.org/10.1212/WNL.0000000000214678.
Amod Sharma, Sarabjeet Kour Sudan, Mohammad Aslam Khan, Muhammad Tahir, Pratim Guha Niyogi, Ajay P Singh, and Seema Singh. “Smoking Behavior Is Associated With an Altered Immune Landscape in Prostate Cancer: Implications for Patient Outcomes”. In: The Prostate (2026). doi: https://doi.org/10.1002/pros.70142.
Nicole Bou Rjeily, Muraleetharan Sanjayan, Pratim Guha Niyogi, Blake E Dewey, Alexandra Zambriczki Lee, Christy Hulett, Gabriella Dagher, Chen Hu, Rafal D Mazur, Elena M Kenney, et al. “Accelerometry-assessed physical activity and circadian rhythm to detect clinical disability status in multiple sclerosis: Cross-sectional study”. In: JMIR mHealth and uHealth 13 (2025), e57599. doi: https://doi.org/10.2196/57599.
Kanjana Thana, Alla Sikorskii, Rebecca Lehto, Pratim Guha Niyogi, Sarah Brewer, David Victorson, Thaddeus Pace, Terry Badger, and Gwen Wyatt. “Family caregivers of those with cancer: quality of life outcomes from a sequential multiple assignment randomized trial”. In: Supportive Care in Cancer 30.7 (2022), pp. 5891–5902. doi: https://doi.org/10.1007/s00520-022-07012-7.
Gwen Wyatt, Rebecca Lehto, Pratim Guha Niyogi, Sarah Brewer, David Victorson, Thaddeus Pace, Terry Badger, and Alla Sikorskii. “Reflexology and meditative practices for symptom management among people with cancer: Results from a sequential multiple assignment randomized trial”. In: Research in Nursing & Health 44.5 (2021), pp. 796–810. doi: https://doi.org/10.1002/nur.22169.
Brandon A Coughlin, Pratim Guha Niyogi, Alla Sikorskii, Louis C Glazer, and Susanne Mohr. “Ranibizumab alters levels of intraocular soluble cytokine receptors in patients with diabetic macular edema”. In: Current Eye Research 45.4 (2020), pp. 509–520. doi: https://doi.org/10.1080/02713683.2019.1665187.
Alla Sikorskii, Pratim Guha Niyogi, David Victorson, Deimante Tamkus, and Gwen Wyatt. “Symptom response analysis of a randomized controlled trial of reflexology for symptom management among women with advanced breast cancer”. In: Supportive Care in Cancer 28.3 (2020), pp. 1395–1404. doi: https://doi.org/10.1007/s00520-019-04959-y.
Pratim Guha Niyogi, Muraleetharan Sanjayan, Dmitri Volfson, Kathryn C Fitzgerald, Ellen M Mowry, and Vadim Zipunnikov. “Hazard and Beyond: Exploring Five Distributional Representations of Accelerometry Data for Disability Discrimination in Multiple Sclerosis”. In: (20xx). doi: https://doi.org/10.48550/arXiv.2410.20620.
Pratim Guha Niyogi and Subhra Sankar Dhar. “Inspecting discrepancy between multivariate distributions using half-space depth-based information criteria”. In: (20xx). doi: https://doi.org/10.48550/arXiv.2301.01345.
Pratim Guha Niyogi, Muraleetharan Sanjayan, Kathryn C Fitzgerald, Ellen M Mowry, and Vadim Zipunnikov. “Scalar-on-distribution regression via generalized odds with applications to accelerometry-assessed disability in multiple sclerosis”. In: arXiv preprint arXiv:2601.09126 (20xx). doi: https://doi.org/10.48550/arXiv.2601.09126.
Md Rokibul Hasan† and Pratim Guha Niyogi. “Covariate-Adjusted Functional Principal Components Analysis for Modeling Hazard Rates of Physical Activity in the US Population”. In: arXiv preprint arXiv:2606.19760 (20xx). doi: https://doi.org/10.48550/arXiv.2606.19760.
Md Mushfiqur Rahman† and Pratim Guha Niyogi. “Association between stage-specific sleep bout durations and obstructive sleep apnea severity: A variable-domain functional regression approach”. In: medRxiv (2026). doi: https://doi.org/10.64898/2026.07.14.26358060.