............... 

•  Chief Guest & Plenary Speaker at 4th Doctoral Symposium on Human Centered Computing (HUMAN-2026), Computer Society of India, Kolkata Chapter, March 28, 2026.

• Invited talks at Atal Bihari Vajpayee – Indian Institute of Information Technology and Management, Gwalior (ABV-IIITM Gwalior), April 1-2, 2025

• Invited Talk in the Department of Electrical Engineering, IIT Delhi, New Delhi, February 3, 2025

• Keynote talk at the IEEE CIS Winter School on Computational Intelligence and Generative AI, Indian Institute of Technology (IIT) Indore, January 8-9, 2025.

• Chief Guest speech at the 11th International Triennial Calcutta Symposium on Probability and Statistics, Dec 27-30, 2024, Calcutta University. (Jointly organized by the Dept of Statistics, CU, and the Calcutta Statistical Association).

• INSA Distinguished Lecture at 90th INSA Anniversary General Meeting, SRM Institute of Science & Technology, Kattankulathur, Chennai, December 9-10, 2024.

• 85th Acharya J.C. Bose Memorial Lecture at Bose Institute, Calcutta on its foundation day, 30th November, 2024.

• Keynote address at 3rd Advanced Communications and Machine Intelligence Conference (MICA 2024), Mahindra University, Hyderabad, October 18, 2024.

• Invited speaker at 6th Mediterranean Conference on Pattern Recognition and Artificial Intelligence (MedPRAI 2024), Istanbul, Turkey, October 18-19, 2024.

• 2024 Engineers' Day Lecture at the Academy of Technology (AOT), Adisaptagram, West Bengal, Organized by INAE Kolkata Chapter, September 15, 2024.

• Keynote talk at the Int. Conf. on Applied Mathematics (ICAM-2024), Dept. of Applied Mathematics, Vidyasagar University, West Bengal, India, June 27, 2024.

• Keynote talk at Data Fusion Conference 2024 (Nation-wide top-level event on AI & Data Science), Moscow, Russia, April 17 and 18, 2024.

• Invited talk at the Texas A&M University at Qatar, Doha, March 25, 2024.

• Keynote talk at the 8th Int. Conf. on Artificial Intelligence, Automation and Control Technologies (AIACT 2024), Phuket, Thailand, February 29 - March 2, 2024

• Inaugural Keynote talk at the International Conference on Industrial Engineering & Analytics (ICONIEA 2024), IIT Kharagpur, February 16, 2024

• Distinguished Lecture at Bennett University (Times of India Group), Greater Noida, February 8, 2024

• Guest Speaker at Kshitij 2024, the Annual Techno-management Symposium of IIT Kharagpur, January 21, 2024

• Convocation Address at Ram Krishna Mission Vivekananda Centeneray College, Rahara, Khardaha, West Bengal 700118, September 29, 2023.

• Keynote talk at the 6th Int. Conf. on Electrical Information and Communication Technology (EICT-2023), Khulna University of Engineering and Technology (KUET), Khulna, Bangladesh, December 7-9, 2023.

• Invited talk at the 8th Int. Conf. on Computer and Devices for Communications (CODEC-2023), Ramakrishna Mission Institute of Culture, Golpark, Kolkata, India, December 14-16, 2023.

• Keynote Speech at the Workshop on Deep Learning Applications for Smart Cities. NIT Rourkela, September 11, 2023

• Keynote speech under the banner of CSIR's "JIGYASA", CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, India, August 30, 2023.

• Invited interview in a research project titled ‘Commonwealth Students, UK Higher Education and Global Knowledge Making 1950-2000’, funded by the Economic and Social Research Council (ESRC), UK, and is jointly undertaken at the University of Leicester and the University of Warwick, UK, in collaboration with the British Library, Cambridge University Library, Cambridge, UK, August 17, 2023. (The recorded interview is deposited in the British Library Sound Archive as an oral history resource.)

• Invited talk at Knexus Research Corporation, MD, USA on June 01, 2023.

• P.C. Mahalanobis Memorial Lecture, World Meteorological Day, India Meteorological Department, Regional Meteorological Center, Calcutta, March 23. 2023.

• Keynote Speech at Technex’23, IIT (BHU), Varanasi, March 17-19, 2023.

• Plenary talk at the 4th International Conference on Computing and Communication Systems, NEHU, Shillong, March 16, 2023.

• AICTE Distinguished Chair Professor Talks at the Maulana Abul Kalam Azad University of Technology, West Bengal, March 9-10, 2023.

• INAE-Science Day Lecture, CSIR-Indian Institute of Chemical Biology, Kolkata, March 01, 2023.

• 30th Prasanta Chandra Mahalanobis Memorial Lecture during 30th West Bengal State Science & Technology Congress, Science City, Kolkata, February 28, 2023.

• Convocation Speech at the Fourth Annual Convocation of Brainware University, Calcutta, February 24, 2023.

• Invited talk in the Visva-Bharati Lecture Series, Santiniketan, West Bengal on Feb 6, 2023.

• Keynote Speech in the "Tech Talks" series of Fluxus '23 - the Technical Fest, IIT Indore, January 21, 2023.

• Convocation Speech at the XX Convocation of Tezpur University, Tezpur, Assam, December 30, 2022.

• INSA Anniversary Lectures during 88th Anniversary General Meeting at Visakhapatnam, December 14-16, 2022.

• Keynote talk at ATMOS, BITS Pilani, Hyderabad Campus, Nov 25, 2022.

• AICTE Distinguished Chair Professor Lectures, Institute of Aeronautical Engineering, Hyderabad, India. Nov 10-12, 2022.

• Keynote talk at the Annual National Level Techno-Management Fest, Aaruush’22, SRM Institute of Science and Technology, Chennai, October 28, 2022.

• Keynote talk at the IEEE International Conference on Intelligent Systems and Computational Intelligence (ICISCI2022), Changsha, China, October 14, 2022

• Keynote speech at International Conference on Machine Intelligence and Emerging Technologies, September 23-25, 2022, Noakhali Science and Technology University, Noakhali, Bangladesh.

• Keynote Talk at "Techniche 2022", Indian Institute of Technology, Guwahati, Sept 02, 2022.

• Keynote speech at 4th International Conference on Pattern Recognition and Intelligent Systems (PRIS 2022), Wuhan, China, July 29-31, 2022.

• Keynote talk at the IEEE Int. Conf. on Intelligent Systems and Computational Intelligence (ICISCI2022), Changsha, China, May 10-13, 2022.

• Chief Guest Speech at CEReS2022: The Computing and Electronics Research Summit, Birla Institute of Technology & Science Pilani, Hyderabad Campus, Hyderabad, March 30, 2022.

• Keynote Speech at Techkriti’22: The Annual Technical and Entrepreneurship Festival, IIT Kanpur, March 27, 2022

• Keynote Speech at VISHLESHAN-22: Research Scholar Day and Doctoral Colloquium, Department of Industrial and Systems Engineering, IIT Kharagpur, March 26 2022.

• Keynote speech at International Workshop on Artificial Intelligence and Applications (IWAIA2022), Doha, Qatar, February 18-20, 2022.

• AICTE-Distnguished Chair Professorial Lecture Series, Bombay College of Pharmacy, Mumbai, The Indian Pharmaceutical Association-Maharashtra State Branch, January 8, 22, and 29, 2022.

• Keynote talk at Third International Conference on Advances in Distributed Computing and Machine Learning (3rd ICADCML), National Institute of Technology, Warangal, January 15 -16, 2022.

• Keynote Speech at 6th Int. Conference on Data Management, Analytics and Innovation (ICDMAI-2022), 14-16 January 2022.

• Keynote talk at 5th Mediterranean Conference on Pattern Recognition and Artificial Intelligence (MedPRAI 2021), Istanbul, Turkey, December 17-18, 2021.

• Keynote talk at 7th IEEE International Women in Engineering (WIE) Conference on Electrical and Computer Engineering (IEEE WIECON-ECE 2021), December 05, 2021 Dhaka, Bangladesh.

• Invited Speaker, Fourth International Seminar on Intelligent Computing (ISIC 21), October 4, 2021, Department of Computer Science and Engineering, Assam University (IN) in association with IEEE Computational Intelligence Society Kolkata (IN).

• Keynote talk at Cognizance, the Annual Technical Fest of IIT Roorkee, April 17, 2021.

• Invited talk at the Central South University, Changsha, Hunan, China, March 31, 2021.

• Chief Guest speech at the Students' Research Convention (SRC), IIT Kanpur, March 27, 2021.

• National Science Day Lecture, NIT, Sikim, Feb 28, 2021.

• Invited talk as the Chief Guest at the first live event of the Artificial Intelligence and Machine Learning Club (AIML C), IIT Delhi, Feb 01, 2021.

• Invited Talk at the International Conference on Rough set theory and Mathematical Applications (ICRSMA2021), 08-09 January, 2021, SSN College of Engineering, Chennai.

• Keynote Talk at SoCTA 2020: 5th International Conference on Soft Computing: Theories and Applications, 25th- 27th December 2020 Dedicated to Covid-19 Warriors.

• Keynote address at SoCProS 2020: International Conference on Soft Computing for Problem Solving, IIT Indore, Dec 18, 2020

• Guest of Honor Address at the Annual Technical Festival "Abhiyantriki", K. J. Somaiya College of Engineering, Mumbai, Oct 24, 2020.

• Special Public Lecture at the Webinars, organized by The National Academy of Sciences India (NASI)-Delhi Chapter and MHRD-Institution Innovation Council, Deen Dayal Upadhyaya College, University of Delhi, as a part of Golden Jubilee Celebration of DST, GoI, Sept 26, 2020.

• Inaugural talk of the Int. Webinar Series on "Machine Intelligence", MIR Lab, July 20, 2020.

• Keynote Speaker at the IEEE Region 10 Symposium (TENSYMP 2020), Pan Pacific Sonargaon Hotel, Dhaka, Bangladesh, June 5-7, 2020.

• Invited talks at the International Conference on Information, System and Convergence Applications (ICISCA 2020), Ton Duc Thang University, Ho Chi Minh City, Vietnam, Feb 12-15, 2020.

• Keynote talk at the International Conference on Artificial Intelligence and Applications (ICAIA 2020), MSIT, New Delhi, Feb 7, 2020.

• Plenary talk at 7th International Conference on Computers and Devices for Communication (CODEC), organized by the Department of Radio Physics and Electronics, University of Calcutta, to be held at Hotel Taj Gateway, Kolkata, December 19-20, 2019.

• Keynote talk at STTP on Explainable Artificial Intelligence and Machine Learning for Multimedia Data, IIT Jammu, December 5, 2019.
• Inaugural talk at the E&ICT Academy IIT Guwahati for Data Science Program, IIT Guwahati, Nov 02, 2019.
• Invited talk at 'Tathva': The annual techno-management fest of National Institute of Technology (NIT), Calicut, October 19, 2019.
• CSIR Foundation Day Lecture at Vigyan Auditorium, CSIR Madras Complex and CSIR - Structural Engineering Research Centre, Chennai, September 27, 2019.
• Keynote address at the Workshop on Transforming India with AI, IIT Jodhpur, August 8, 2019.
• Keynote talk at National Workshop on Data Science and Artificial Intelligence (WDSAI), IIT Bhilai, Jul 3, 2019.
• Invited talk at the 3rd Overseas Academicians Qingdao Tour & Qingdao International Academicians Conference, Qingdao, China, May 28-31, 2019.
• Invited Talk at the University of Illinois, Urbana-Champaign (UIUC), IL, May 07, 2019.
• Prof. M. N. Saha Memorial Lecture of the National Academy of Sciences, India, Varanasi Chapter, to commemorate the 125th Birth anniversary of its founder, Banaras Hindu University, Banaras (BHU), March 29, 2019.
• Inaugural Talk at the Indo-UK International Workshop on IoT, IIT-Kharagpur, March 8, 2019.
• Keynote speech at the Int. Conf. on Smart Grid Technology and Data Processing: Smart Urban Resource and its breakthrough in technology and management, 28 Feb – 1 Mar. 2019, Suzhou, China.
• Invited talk at the International Conference on Information, System and Convergence Applications (ICISCA), Bangkok, Thailand, January 23-25, 2019.
• Invited talk(s) at 5th International School on Big Data (BigDat 2019), University of Cambridge, UK., January 7-11, 2019.
• Keynote talk at the International Conference on Innovation in Engineering and Technology (ICIET), 27-29 Dec. 2018, University of Dhaka, Bangladesh.
• Keynote address at the Fourth International Conference on Research in Computational Intelligence and Communication Networks (ICRCICN 2018), RCC Institute of Information Technology, Kolkata, Nov 22, 2018
• Prof. Meghnad Saha Memorial Lecture of the National Academy of Sciences, India, Jharkhand Chapter, to commemorate the 125th Birth anniversary of its founder, CSIR-NML Auditorium, Jamshedpur, October 5, 2018 .
• Convocation address at the 14th Convocation, National Institute of Technology (NIT), Culicut, Kozhikode, Kerala on September 29, 2018.
• Valedictory speech at the 12th INAE National Frontiers of Engineering (12NatFoE) Symposium, IIT Guwahati, 18 September 2018.
• Keynote speaker at the International summit on "Computational and web Intelligence" during 14-15 Sep 2018, Bangkok, Thailand.
• "Teachers’ Day Lecture” of the year 2018, ICAR-Indian Agricultural Research Institute, New Delhi, September 5, 2018.
• Invited talks at the Qingdao Forum on Science & Technology, and 2nd Qingdap International Academician Conference, Qingdao, China, August 16-18, 2018.
• Foundation Day Lecture at IIT Patna, August 6, 2018.
• Invited talk at the HPC Innovation Symposium, Organized by Kestone & CL Educate, Marriott Palace, Jaipur, July 11, 2018.
• Invited talk at TCS Research and Innovation, Embedded Systems and Robotics Lab, Kolkata, June 6, 2018.
• National Technology Day Talk at DIT University, Dehradun on May 11, 2018.
• Keynote Speech at the First International Conference on DATA ANALYTICS & LEARNING, Mysore University, March 30, 2018.
• Invited talk at ABV - Indian Institute of Information Technology and Management, Gwalior, March 26, 2018
• National Science Day Lecture, INAE Kolkata Chapter, Center for Research in Nano-Science and Nano-Technology at the University of Calcutta, Salt lake City, Feb 28, 2018.
• Invited talk at Vishleswan 2018, Dept of Industrial and System Engineering, IIT Kharagpur, Feb 17, 2018.
• Keynote Address at Fifth International Conference on Mining Intelligence and Knowledge Exploration (MIKE 2017), IDRBT, Hyderabad, Dec 13-15, 2017.
• Keynote talk at Prof. Lotfi A. Zadeh Memorial Seminar on “Fuzzy Set Theory and its Applications”, National Institute of Technology Durgapur, Dec 1, 2017
• Invited talk at the Dept of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genova, Italy, Nov 24, 2017
• Invited talks in the Dept. of Science & Technology, University of Naples Parthenope, Naples, Italy on Nov 21 and 23, 2017
• Keynote talk at the International Conference on Information Technology and Applied Mathematics, Haldia Institute of Technology, Haldia, Oct 30, 2017.
• Keynote talk at the 1st Int. Conf. on Data, Engineering and Applications (IDEA-2k17), Rajiv Gandhi Technical University, Bhopal, October 28-29, 2017
• Keynote talk at the NTU-India Connect program International Symposium on Computational Mathematics, Optimization and Computational Intelligence (CMOCI 2017), IIT Indore, July 17-19, 2017.
• 2017 INSA Jawaharlal Nehru Birth Centenary Lecture at SP Pune University, July 12, 2017.
• Keynote talk at 2017 IJCRS (Int. Joint Conf. on Rough Sets) http://ijcrs2017.uwm.edu.pl/ , Olsztyn, Poland, July 3 - 7, 2017.
•  Invited talk at Guangdong University of Technology, Guangzhou, China, May 17, 2017.
•  Distinguished Lecture at the Department of Computer Science, Hong Kong Baptist University, Hong Kong, May 15, 2017.
• Keynote speaker at the 1st International Conference on Smart Systems, Innovation and Computing (SSIC 2017), Jaipur, April 15 -16, 2017.
• Keynote speech at the First International Conference On Computational Intelligence, Communications, and Business Analytics (CICBA - 2017), March 24-25, 2017, Calcutta Business School, Kolkata.
• Plenary address at the Workshop on Big Data Analysis, La Trobe University, Melbourne, March 13-15, 2017.
• Invited talk at Computer Science and Information Technology Dept., La Trobe University, Melbourne, Australia, March 16, 2017
• Keynote speech at Pragyan '17 (the annual techno-managerial fest), National Institute of Technology, Tiruchirappalli, March 2 - 5, 2017
• Inaugural lecture towards the Golden Jubilee celebration of the Dept. of Electronics & Telecommunication Engg., IIEST, Shibpur, Howrah, March 1, 2017.
• Keynote speech at the International Conference on Electrical, Computer and Communication Engineering (ECCE-2017), February 16-18, 2017, Cox's Bazar, Bangladesh.
• Keynote speech at 2017 International Conference on Imaging, Vision and Pattern Recognition (icIVPR), February 13-14, 2017, University of Dhaka, Bangladesh.
• Invited talk at the IEEE Bombay Section Symposium (IBSS), Baramati, Dec 21-22, 2016.
• Keynote speech in IEEE WIECON-ECE 2016, Pune, Dec 19 - 21, 2016.
• Keynote speaker at the 1st Mediterranean Conference on Pattern Recognition and Artificial Intelligence (MedPRAI 2016), Larbi Tebessi University, Tebessa, Algeria, Nov 22-23, 2016.
• IRSS Fellow Plenary Speaker at the Int. Joint Conf. Rough Sets(ICJRS), University of Chile, Santiago, Chile, October 7-11, 2016.
• 64th Foundation Day Lecture at CSIR-CEERI, Pilani, Sept 21, 2016.
• Invited talk at Santander Bank, London, June 17, 2016 
• Several invited discussions and meetings at Data Mining Services, Ltd., UK during June 13-17, 2016.
• Invited visits at several Departments of Imperial College, London, during June 7-10, 2016
• Keynote speaker at 5th Intl Conf. on Informatics, Electronics & Vision (ICIEV), 13-14 May 2016, University of Dhaka, Dhaka, Bangladesh.
• Keynote speaker at the 2016 International Conference on Data Mining and Advanced Computing (SAPIENCE), 16-18 March 2016,  Ernakulam, Kerala
• Invited Talk at the Technical Fest ABHIKALPAN - 2016, Indian Institute of Information Technology Design and Manufacturing JABALPUR, March 12 and 13, 2016.
• Keynote Speaker at the 3rd IEEE Int. Conf. on Recent Advances in Information Technology (RAIT-2016), Indian School of Mines, Dhanbad, 03-05 March 2016.
• Series of invited talks at 2nd International Winter School on Big Data (BigDat 2016), Bilbao, Spain, February 8-12 2016.
• Keynote speaker at the IEEE international Conference on Microelectronics, Computing and Communication (MicroCom 2016), NIT - Durgapur, January 23-25, 2016.
• Invited talk at WICI Annual Workshop in Beijing Dec 26, 2015.
• Keynote Speech at the IEEE​ ​Workshop on​ ​Computational Intelligence: Theories, Applications and Future Directions​ (IEEE WCI 2015), IIT Kanpur, Dec 14-17, 2015
• S. N.  Mitra Memorial Award Lecture of Indian National Academy of  Engineering (INAE), DIAT, Pune, Dec 10, 2015
• Invited talk at the German ​Workshop on​ ​Computational Intelligence, Dortmund, Germany, Nov 26-27, 2015

• Keynote speech at The 9th International Conference on Future Generation Communication and Networking (FGCN-2015), Jeju Island, Korea, Nov 25-28, 2015

• Invited talk at the Szechenyi Istvan University, Gyor, Hungary, Nov 13-15, 2015

• Keynote address at the 2nd IEEE International Conference on Recent Trends in Information Systems (ReTIS-15), Jadavpur University, July 10, 2015.

• Plenary Keynote Speaker at the 5th Int. Conf. on Pattern Recognition and Machine Intelligence (PReMI 2015), Warsaw, Poland, June 30 - July 3, 2015

• Plenary lecture at the Satellite Conference "Science in Bengal", University of North Bengal, June 03, 2015.
• Keynote address at IEEE sponsored International Conference on " Cognitive Computing and Information Processing CCIP-2015, Noida, March 3 and 4, 2015.
• National Science Day Lecture at the CSIR-Centeral Glass and Ceremic Research Institute, Kolkata, February 25, 2015
• Invited talk at the Lecture Workshop on "Trans-disciplinary Areas of Research and Teaching by Shanti Swarup Bhatnagar Awardee”, University of Delhi, New Delhi, January 30-31, 2015
• Convocation Address at the 11th Convocation of Dhirubhai Ambani Institute of Information and Communication Technology (DA-IICT), Gandginagar, Gujrat, January 17, 2015.
• Convocation address at 59th Annual Convocation of Jadavpur University, 24 December 2014.
• Keynote address at the 3rd International Conference on Modeling and Simulation (MAS-2014), Hainan, China, Dec 20-23, 2014.
• Keynote address at the First International Conference on Rough Sets and Knowledge Technologies (ICRSKT)-2014, Nov 9-11, 2014, Jawaharlal Nehru Technology University, Hyderabad.
• Invited talk at the IEEE Kolkata Section Conference CALCON- 2014, November 8, 2014, Hotel Park Prime, Kolkata.
• Invited talk at 9th International Forum on Strategic Technology (IFOST 2014), Cox's Bazar, Chittagong, (Organized by Chittagong University of Science & Technology), Bangladesh, October 21-23, 2014
• Convocation Address at 4th Annual Convocation of NIT, Patna on Sept 28, 2014.
• Keynote talk at the 2nd International Conference on Advanced Computing, Networking and Informatics (ICACNI-2014), Parish Hall, St. Paul's Cathedral, Kolkata, India, June 24, 2014.
• Invited talk at the United International College of Hong Kong Baptist University, Zhuhai, China, June 16, 2014.
• Invited talks at Computer Science Department, Hong Kong Baptist University, Hong Kong, June 12, 2014.
• Keynote talk at the 3rd International Conference on Informatics, Electronics & Vision (ICIEV), 23-24 May, 2014, University of Dhaka, Bangladesh.
• Keynote talk at the international Conference on computational Intelligence, University of Mumbai, Mumbai, March 21-22,2014.

• Keynote talk at the International Symposium on Signal Processing and Intelligent Recognition Systems (SIRS-2014),  IIITM-K, Trivandrum, March 13-15,  2014

• Keynote talk at the Fifth International Conference on Advanced Communication and Networking (ACN 2013), December 15 - 17, 2013, Guangzhou, China

• Keynote talk at the International Conference on “Facets of Uncertainties and Applications” on 7th December 2013, Ramakrishna Mission Institute of Culture, Golpark, Kolkata.

• Faraday Memorial Lecture at the IEEE Hyderabad Section, Sept 22, 2013.

• Invited talk at the International Conference on Image Analysis and Processing (ICIAP), Naples, Italy, Sept 11-13, 2013 (Organized by Italian Chapter for Pattern Recognition of IAPR).

• Invited talk at the 23rd Italian Workshop on Neural Networks, Vietri sul Mare, Salerno, Italy, May 23-25, 2013.

• IEEE Distinguished Visitor Lecture at the Fairleigh Dickinson University in Teaneck, NJ, USA on May 10, 2013.

• Ramanujan Memorial Lecture organized by the Netaji Subhas Open University, West Bengal, (to be held at the Bangla Academy Sabhaghar, Nandan Complex), March 07, 2013.

• Plenary talk at 5th International Conference on Computers and Devices for Communication (CODEC 2012, Hyatt Regency, Kolkata, December 16-18, 2012.

• Keynote talk at the Seventh International Conference on Bio-Inspired Computing: Theories and Application (BIC-TA 2012), IIIT-Gwalior, India, December 14 - 16, 2012.

• Invited Talk at the International Conference on Active Media Technology 2012 (AMT-12), Macau, China, December 4 - 7,  2012.

• Plenary talk at 12th International Conference on Intelligent Systems design and Applications (ISDA), Kochi, November 27 - 29, 2012.

• Invited talks at 2012 Int. Falls School in Natural Computing (FSNC 2012), to be held in Tarragona (Spain) on November 19-23, 2012.

• Keynote talk at International Conference on Intelligent Systems and Informatics, Parahyangan  Catholic University, Bandung,  Indonesia, November 19 - 21, 2012.

• IEEE Distinguished Visitor Talks at Bangladesh University of Engineering & Technology, Dhaka on 5.11.12, BRAC, Dhaka on 6.11.12 and Rajshahi University of Engineering & Technology, Rajshahi on 7.11.12.

• Invited talk at the University of IOWA, ECE and Radiology Dept., October 11, 2012.

• Invited talks at the University of Pennsylvania, Radiology Dept., Philadelphia, Oct 5 and 8, 2012.

• Keynote talk at the 4th International Conference on Advanced Communication and Networking (ACN 2012, at Jeju, Korea, August 30 - 31, 2012.

• Keynote talk at the 4th International Conference on Awareness Science and Technology (iCAST 2012), Korea University, Seoul, Korea, August 21 - 24, 2012

• Invited talk at the  International Workshop on Three Approaches to Data Mining: Test Theory, Rough Sets and Logical Analysis of Data, King Abdullah University of Science and Technology (KAUST), Saudi Arabia, June 8-11, 2012.

• Keynote talk at the 3rd International Conference on Soft Computing, Intelligent System  and Information Technology (ICSIIT), Bali, Indonesia, 24-25 May 2012.

• Plenary talk at World Congress on Information and Communicatio Technologies (WICT 2011), Mumbai, India, December 11-14, 2011

• Keynote talk at National Conference on Machine Vision and Image Processing (MVIP), Pune, India, December 7, 2011

• Prof. P. P. Chatterjee Memorial Lecture, Dept. of Applied Mathematics, University of Calcutta, September 5, 2011.

• Keynote talk at 2011 symposium on Artificial Intelligence and Signal Processing  (AISP2011), Sharif University, Tehran, Iran, June 14 - 17, 2011

• Invited talk at the World Conference on Soft Computing, San Francisco, USA, May 23-26, 2011

• Keynote talk at the 7th International Workshop Data Analysis in Astronomy  <<Livio Scarsi and Vito Di Gesu'>>  at EFMCSC (DAA2011), Erice, Italy, April 11 - 21, 2011

• Keynote talk at the International Conference on Data Engineering and Internet Technology (DEIT 2011), Bali, Indonesia, March 14 - 17, 2011)

• Keynote talk on Analysis of Nonlinear System, Visva Bharati, Santiniketan, West Bengal, India, March 12-13, 2011.

• Golden Jubilee Distinguished Lecture at Hong Kong Baptist Unviersity, Hong Kong, March 3, 2011

• Keynote talk at the National Conference on Emerging Trends in Soft Computing at Nowrosjee Wadia College, Pune, India, February 2 -3, 2011.

• Inaugural talk and Keynote talk at International Conference on Systems in Medicine & Biology, IIT-Kharagpur, India, December 16-18, 2010.

• Invited talk at the 15th Iberoamerican Congress on Pattern Recognition (CIARP-10), Sao Paulo, Brazil,  8-11 November, 2010.

• Keynote talk at the 2nd International Symposium on Aware Computing (ISAC 2010), Tainan, Taiwan, 1-4 November, 2010.

• Keynote talk at the 5th International Conference on Rough Sets and Knowledge Technology (RSKT 2010), Beijing, China, 15-17 October, 2010.

• Keynote Talk at the 7th International Conference on Cognitive Science (ICCS2010, Section: Cognitive Science and Information Science), Beijing, China,17-20 August, 2010

• Keynote talk at the 4th International KES Symposium on Agents and Multi-agent Systems - Technologies and Applications, Gdynia, Poland, 23-26 June, 2010.

• Keynote talk at the 7th International Conference on Rough Sets and Current Trends in Computing (RSCTC 2010), Warsaw, Poland, 28 -30 June, 2010.

• Z. Pawlak Memorial Plenary Talk in Warsaw, Poland on 28th June 2010 under the 7th Int. Conference on Rough Sets and Current Trends in Computing (RSCTC), 2010.

• P. C. Mahalanobis Memorial Lecture of Indian Science News Association, delivered at the Department of Statistics, Visva-Bharati, Shantiniketan in March 2010.

• Bose Colloquium Lecture at the S.N. Bose National Center for Basic Sciences, January 8, 2010.

• A.K. Chowdhury Memorial Talk in Jadavpur University, Kolkata on January 6, 2008 under the 9th Int. Conference on Distributed Computing and Networking (ICDCN), 2008.

• Z. Pawlak Memorial Plenary Talk in Warsaw, Poland on 29th June 2007 under the Int. Conference on Rough Sets and Emerging Intelligent Systems Paradigms (RSEISP), 2007.

• Golden Jubilee Talk at the Central Inland Fisheries Research Institute, Ministry of Fisheries and Inland Sciences, Govt. of India, on 21st May 2007.

• D. M. Bose Memorial Lecture on his 121st Birth Anniversary, 26th November 2006, at the Bose Institute, Kolkata.

• Golden Jubilee Plenary Talk at the Central Mining Research Institute (CMRI), Dhanbad, India in 2006.

• Kolkata Kolon Talk in S. N. Bose Center of Basic Science in 2004.

• The Bengal Science Lecture in IT and Bio-IT under the National Program “Year of Scientific Awareness 2004” organized by the Science & Technology Council and Department, Govt. of West Bengal, India.

• 5th Distinguished Information Technology (IT) Lecture, Ministry of IT and Communication, Govt. of India, 2003.

• 2001 S.H. Zaheer Medal Lecture of Indian National Science Academy, delivered at the Department of Mathematics, Punjab University, Chandigarh.

• 67th Annual General Meeting Special Lecture of Indian Academy of Science, 2001.

• IEEE (USA) Distinguished Visitor Lectures in 1998, 1999, 2003 and 2012 in fifteen IEEE Chapters of Australia, Singapore, China, Hong Kong, New Zealand, and Bangladesh.

• Ananta K. Sengupta Memorial Lecture, Dept. of Applied Physics, Calcutta University, Calcutta, 1998.

• 1997 Ramlal Wadha Gold Medal Lecture of IETE, India.

• Platinum Jubilee Lecture in Information Technology of the Institute of Engineers (India), 1996.

• Amal K. Roy Memorial Lecture of the Institute of Electronics & Telecomm. Engineers (IETE), India, 1996.

• Jawaharlal Nehru Fellowship Lecture of Jawaharlal Nehru Memorial Fund, delivered at Electronics Niketan, Department of Electronics, Govt. of India, and at Allahabad University, Allahabad in 1994.

• 1993 Vikram Sarabhai Lecture in Electronics/Telecommunications/Informatics/ Automation in the Physical Research Laboratory, Ahmedabad.

• Japanese Fuzzy Logic Companion Lectures in 1988 and 1990 for the engineers and scientists of Japanese industries who want to apply fuzzy logic for commercial product.

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