Dr. Bhattacharya is interested in the problem of parametric/non-parametric control chart techniques in high-dimensional processes, acceptance sampling, inference based on order statistics, design issues in reliability life-testing experiments, Bayesian design problems in reliability, and survival analysis.

• Ph D in Statistics, Indian Statistical Institute Kolkata (2016)
• MS in Mathematics, Indian Institute of Technology Kharagpur (2008)
• BS in Mathematics, University of Calcutta (2006)

• Generalized multiple dependent state sampling plan for quality inspection in ocean dataset Communications in Statistics - Theory and Methods (2022), Ritwik Bhattacharya, M Aslam.
• Simultaneous best linear invariant prediction of future order statistics for location-scale and scale families and associated optimality properties Statistics 56 (2022), N Balakrishnan, Ritwik Bhattacharya.
• “Survival analysis of Type-II Lehmann Frechet parameters via progressive Type-II censoring with applications” Axioms (in press), Ritwik Bhattacharya, A. Elshahhat,, H. S. Mohammed.
• A MCMC-type simple probabilistic approach for determining optimal progressive censoring schemes Communications in Statistics - Simulation and Computation (2022), Ritwik Bhattacharya, N Balakrishnan.
• On simultaneous best linear unbiased predic- tion of future order statistics and associated properties Journal of Multivariate Analysis, 188 (2022), N Balakrishnan, Ritwik Bhattacharya.
• Revisiting Best Linear Unbiased Estimation of Location-Scale Parameters Based on Optimally Selected Order Statistics Using Compound Design Methodology and Computing in Applied Probability 24 (2022), Ritwik Bhattacharya, Narayanaswamy Balakrishnan.
• Bayesian optimal warranty length under Type-II unified hybrid censoring scheme Quality Technology & Quantitative Management (2021), T Sen, Ritwik Bhattacharya, B Pradhan, Y N. Tripathi.
• D-optimal joint best linear unbiased prediction of order statistics Metrika (2021), N Balakrishnan, Ritwik Bhattacharya.

• Prediction in ordered statistics and its applications (2023), Volume El Paso, Ritwik Bhattacharya.
• On some prediction issues in order statistics (2021), Volume International Conference on Mathematical Sciences, S. V. National Institute of Technology Surat, India, Ritwik Bhattacharya.

• Prediction issues in progressively censored life-testing experiments: New ideas and applications
• Prediction of future ordered statistics with application to reliability life-testing experiments