(Invited speaker as a PhD student) Joint ISI-NUS workshop in Statistics and Probability, November, 2008, in National University of Singapore, Singapore.
(Contributed speaker) Seventh International Triennial Calcutta Symposium on Probability and Statistics, December, 2009, in University of Calcutta, India.
(Contributed speaker) International Conference on Robust Statistics, June-July, 2011, University of Valladolid, Spain.
(Invited speaker) Statistical Laboratory, University of Cambridge, England, January 31, 2012.
(Invited speaker) Department of Statistics, London School of Economics and Political Science, England, March 9, 2012.
(Invited speaker) Department of Economics, University of Mannheim, Germany, March 26, 2012.
(Invited speaker) Department of Statistics, University of Ruhr, Germany, March 29, 2012.
(Invited speaker) Mathematical Methods in Reliability Research - Lifetime data analysis, May 22, 2012, Brunel University, London, England.
(Invited speaker) School of Mathematics, University of Birmingham, England, October 26, 2012.
(Invited speaker) Third IIMA International Conference on Advanced Data Analysis, Business Analytics and Intelligence, April, 2013, Indian Institute of Management, Ahmedabad.
(Invited speaker) Theoretical Statistics and Mathematics Unit, Indian Statistical Institute, Calcutta, India, June 3, 2013.
(Invited speaker) Department of Mathematics and Statistics, Indian Institute of Technology, Kanpur, India, December 7, 2013 (on Research Scholar Day at the IIT kanpur).
(Invited speaker) A workshop on Statistical Analysis using SPSS, March 10-14, 2014, Department of Statistics, Tripura University, India.
(Invited speaker) A conference organized by International Society of Nonparametric Statistics (ISNPS), June 12-16, 2014, Cadiz, Spain.
(Invited speaker) A workshop on “Frontier Areas in Econometrics and International Trade and Finance”, December 10-20, 2014, Department of Humanities Social Sciences, Indian Institute of Technology, Kanpur, India.
(Invited speaker) Department of Mathematics and Statistics, Indian Institute of Technology, Kanpur, India, January 24–25, 2015 (on Research Scholar Day at the IIT kanpur).
(Invited speaker) A workshop on “Statistical Analysis for Engineers (SAFE-2015)”, May 4-8, 2015, Department of Mathematics and Statistics, Indian Institute of Technology, Kanpur, India.
(Invited speaker) Theoretical Statistics and Mathematics Unit, Indian Statistical Institute, Calcutta, India, March 15, 2017.
(Invited speaker) Department of Statistics, Visva bharati university, India, July 13, 2017.
(Invited speaker) Third International Conference on Statistics for Twenty-first Century-2017 (organized by Department of Statistics, University of Kerala, India and American Statistical Association, USA), December 14–16, 2017, Trivandrum, Kerala, India.
(Invited speaker) Third IMS-APRM conference organized by Institute of Mathematical Statistics, USA, June 26-29, 2018, National University of Singapore, Singapore.
(Invited speaker) Department of Mathematics and Statistics, Indian Institute of Technology, Kanpur, India, June 4, 2019.
(Invited speaker) The Fourth Russian-Indian Joint Conference in Statistics and Probability, June 10-14, 2019, The Euler International Mathematical Institute, St. Petersburg, Russia.
(Invited speaker) International Conference on Statistics for Twenty-first Century-2019 (organized by Department of Statistics, University of Kerala, India and American Statistical Association, USA), December 18–20, 2019, Trivandrum, Kerala, India.
(Invited speaker; online mode) 13th International Conference of the ERCIM WG on Computational and Methodological Statistics (CMStatistics 2020), December 19–21, 2020, King’s college, London, England.
(Invited speaker; online mode) Department of Mathematics, Indian Institute of Technology, Bombay, India, March 24, 2021.
(Keynote speaker; online mode) Recent Advances in Statistics and Operations Research (organized by Department of Mathematics, National Institute of Technology, Sikim, India), October 26–28, 2021.
(Invited speaker; online mode) Interdisciplinary Statistical Research Unit (ISRU), Indian Statistical Institute, Kolkata, India, April 7, 2022.
(Invited speaker) 2022 IMS International Conference on Statistics and Data Science (ICSDS), December 13–16, 2022, Florence, Italy.
(Invited speaker) 15th International Conference of the ERCIM WG on Computational and Methodological Statistics (CMStatistics 2022), December 17–19, 2022, King’s college, London, England.
(Invited speaker) 1st Joint Conference on Statistics and Data Science (JCSDS), July 11 -13, 2023, Center for Statistical Science, Peking University, China.
(Invited speaker) The 9th International Forum on Statistics (RUC IFS 2023), Date: July 14-15, 2023, Location: Renmin University of China, Beijing. Organizer: School of Statistics, Renmin University of China an, Center for Applied Statistics of Renmin University of China.
(Invited speaker) 6th International Conference on Econometrics and Statistics will be hosted by Waseda University, Tokyo, Japan, August 1-3, 2023.
(Invited speaker) 16th International Conference of the ERCIM WG on Computational and Methodological Statistics (CMStatistics 2023) hosted by HTW Berlin, University of Applied Sciences, Berlin, Germany, 16-18 December 2023.
(Invited speaker) Department of Mathematics, Indian Institute of Technology, Bombay, India, February 15, 2024.
(Invited speaker) A conference organized by International Society of Nonparametric Statistics (ISNPS), June 25-29, 2024, Braga, Portugal. (Received international travel support (under ITS scheme) to attend this conference from the SERB, Department of Science and Technology, Government of India).
(Invited speaker) TIFR CAM (Tata Institute of Fundamental Research, Centre for Applicable Mathematics), Bangalore, India, September 24, 2024.
(Invited speaker) A conference organized by International Indian Statistical Association, December 27-31, 2024, Kochi, India
2. Organizing a session “Non-parametric and Robust Statistical Methods” in the conference organized by International Indian Statistical Association, December 20-24, 2015, Pune, India.
3. Organizing and chairing the session “Robust Statistical Methods” in the conference organized by Institute of Mathematical Statistics, USA, June 27-30, 2016, The Chinese University of Hong Kong. 4. Chairing the session “Statistics” in the Fourth Russian-Indian Joint Conference in Statistics and Probability, June 10-14, 2019, The Euler International Mathematical Institute, St. Petersburg, Russia. 5. Organizing the session “Non-parametric and Robust Statistical Methods” in International Conference on Statistics for Twenty-first Century-2019 (organized by Department of Statistics, University of Kerala, India and American Statistical Association, USA), December 18–20, 2019, Trivandrum, Kerala, India.6. Organizing and chairing the session “Statistical Methodologies for Infinite Dimensional Data” in the 6th International Conference on Econometrics and Statistics will be hosted by Waseda University, Tokyo, Japan, August 1-3, 2023.
7. Organizing the session "Statistics for non-Euclidean Data" in the 7th International Conference on Econometrics and Statistics (EcoSta 2024) will be hosted by Beijing Normal University, Beijing, China, 17-19, July 2024.
8. Organizing the session "TBA" in the 8th International Conference on Econometrics and Statistics (EcoSta 2025) will be hosted by Waseda University, Tokyo, Japan, 21-23, August 2025.