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.
Nicole Bou Rjeily, Muraleetharan Sanjayan, Pratim Guha Niyogi, Blake Dewey, Alexandra Zambriczki Lee, Christy Hulett, Gabriella Dagher, Chen Hu, Rafal D. Mazur, Elena M. Kenney, Erin Brennan, Anna DuVal, Peter A. Calabresi, Vadim Zipunnikov, Kathryn C. Fitzgerald, Ellen M. Mowry. “Accelerometry-assessed Physical Activity and Circadian Rhythm to Detect Clinical Disability Status in Multiple Sclerosis”. (2025): JMIR mHealth and uHealth 13: e57599.
Pratim Guha Niyogi, Ping-Shou Zhong, Xiaohong Joe Zhou. “Functional varying-coefficient model under heteroskedasticity with application to DTI data”. Statistica Sinica (Accepted for publication), (2024).
Pratim Guha Niyogi, Ping-Shou Zhong. “Quadratic inference with dense functional responses”. Journal of Multivariate Analysis, 207 (2025): 105400.
Pratim Guha Niyogi, Martin A. Lindquist, Tapabrata Maiti. “A tensor based varying-coefficient model for multi-modal neuroimaging data analysis”. IEEE Transactions on Signal Processing, vol. 72, (2024): 1607-1619.
Kanjana Thana, Alla Sikorskii, Rebecca Lehto, Pratim Guha Niyogi, Sarah Brewer, David Victorson, Thaddeus Pace, Terry Badger, Gwen Wyatt. “Family caregivers of those with cancer: quality of life outcomes from a sequential multiple assignment randomized trial”. Supportive Care in Cancer 30, no. 7 (2022): 5891-5902.
Gwen Wyatt, Rebecca Lehto, Pratim Guha Niyogi, Sarah Brewer, David Victorson, Thaddeus Pace, Terry Badger, Alla Sikorskii. “Reflexology and meditative practices for symptom management among people with cancer: Results from a sequential multiple assignment randomized trial”. Research in Nursing & Health 44, no. 5 (2021): 796-810.
Brandon A. Coughlin, Pratim Guha Niyogi, Alla Sikorskii, Louis C. Glazer, Susanne Mohr. “Ranibizumab Alters Levels of Intraocular Soluble Cytokine Receptors in Patients with Diabetic Macular Edema”. Current Eye Research 45, no. 4 (2020): 509-520.
Alla Sikorskii, Pratim Guha Niyogi, David Victorson, Deimante Tamkus, Gwen Wyatt. “Symptom response analysis of a randomized controlled trial of reflexology for symptom management among women with advanced breast cancer”. Supportive Care in Cancer 28, no. 3 (2020): 1395-1404.
Adhidev Biswas, Suman Majumder, Pratim Guha Niyogi, Ayanendranath Basu (2019). “A Weighted Likelihood Approach to Problems in Survival Data”. Sankhya B 83, no. 2 (2019): 466-492.
Adhidev Biswas, Pratim Guha Niyogi, Suman Majumder, Subir K. Bhandari, Abhik Ghosh, Ayanendranath Basu. “Theoretical properties of a new weighted likelihood estimator for right censored data”. Technical Report ISRU (2018), Interdisciplinary Statistical Research Unit, Indian Statistical Institute.
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”. medRxiv preprint medRxiv:2025.09.02.25334901 (2025+)
Pratim Guha Niyogi, Muraleetharan Sanjayan, Rahul Ghosal, Jeff Goldsmith, Kate Fitzgerald, Ellen Mowry, Vadim Zipunnikov. “Quantifying movement reserve in multiple sclerosis via diurnal activity quantiles”. medRxiv preprint medRxiv:2025.05.05.25327033 (2025+), [Minor revision].
Pratim Guha Niyogi, Muraleetharan Sanjayan, Dmitri Volfson, Kathryn C. Fitzgerald, Ellen M. Mowry, Vadim Zipunnikov. “Hazard and Beyond: Exploring Five Distributional Representations of Accelerometry Data for Disability Discrimination in Multiple Sclerosis”. arXiv:2410.20620 (2025+) [Rejection with resubmission].
Kathryn C Fitzgerald, Muraleetharan Sanjayan, Blake Dewey, Pratim Guha Niyogi, Nicole Bou Rjeily, Yasser Fadlallah, Alice Delaney, Alexandra Zambriczki Lee, Safiya Duncan, Chelsea Wyche, Ela Moni, Peter Calabresi, Vadim Zipunnikov, Ellen M Mowry. "Within-person changes in objectively measured activity levels as a predictor of brain atrophy in multiple sclerosis". medrxiv (2025+).
Pratim Guha Niyogi, Subhra Sankar Dhar. “Identifying arbitrary transformation between the slopes in functional regression”. arXiv preprint arXiv:2407.19502 (2024+) [Major revision].
Pratim Guha Niyogi, Subhra Sankar Dhar. “Inspecting discrepancy between multivariate distributions using half-space depth based information criteria”. arXiv preprint arXiv:2301.01345v2 (2023+) [Under review].