Manu K. Gupta, N. Hemachandra and Shobhit Bhatnagar, "Learning in Sequential Decision Making Under Uncertainty", Artificial Intelligence and Machine Learning for Edge Computing, Editors: Rajiv Pandey, Sunil Kumar Khatri, Neeraj Kumar Singh, Parul Verma, Publisher: Elsevier, In Press
N. Hemachandra and Puja Sahu, "Some Aspects of Estimators for Variance of Normally Distributed Data", Chapter 21, Pages 355--379, Handbook of Research on Organizational Transformations through Big Data Analytics, Editors: Madjid Tavana and Kartikeya Puranam ISBN 978-1-4666-7272-7 (print), 978-1-4666-7273-4 (ebook), 978-1-4666-7275-8 (print and perpertual access), ISSN 2327-3175, EISSN 2327-3283, 2015, Advances in Business Information Systems and Analytics (ABISA) Book Series, IGI Global, Hershey, USA
D. K. Verma, N. Hemachandra, Y. Narahari and J. D. Tew, "Winner Determination in Multi-unit Procurement Auctions with Volume Discount Bids and Lead Time Constraints", Pages 289--315, Applications of Multi-Criteria and Game Theory Approaches: Manufacturing and Logistics, Editors: Lyes Benyoucef, Jean-Claude Hennet, Manoj Kumar Tiwari ISBN: 978-1-4471-5294-1 (Print) 978-1-4471-5295-8 (Online), 2014, Springer Series in Advanced Manufacturing, Springer London
Sudhir K. Sinha, N. Rangaraj and N. Hemachandra. "A model for servive level based pricing of shared resources at container depots", Second International Conference on Transporation System Studies (ICOTSS), January 10-12, 2008, Mumbai, Proceedings published as Transportation system studies and policy analysis, Edited by S. Sriraman, pp. 67-77, Himalaya Publishing House, Mumbai, 2010.
A. Sarkar, N. Hemachandra and K. Suresh Kumar, "An Approach to Pricing of Bonds", Proceeding published as Vision 2020 the strategic role of operational research, Edited by N. Ravichandran, pp 233-259, Allied Publishers Private Limited, Ahemadabad, 2005.
Kartikeya S. Puranam and N. Hemachandra, "Sensitivity Analysis of the Control Limit with respect to the Cost Parameters in an M/M/1 Queue", Proceeding published as Vision 2020 the strategic role of operational research, Edited by N. Ravichandran, pp 433-440, Allied Publishers Private Limited, Ahemadabad, 2005.
N. Hemachandra, Kishor Patil and Sandhya Tripathi, "Equilibrium points and equilibrium sets of some GI/M/1 queues", Queueing Systems: Theory and Applications, QUESTA. December 2020, DOI: http://dx.doi.org/10.1007/s11134-020-09677-5
Manu K. Gupta, Hemachandra, N., and Venkateswaran, J., “Some Parameterized Dynamic Priority Policies for Two-Class M/G/1 Queues: Completeness and Applications”, ACM Trans. Model. Perform. Eval. Comput. Syst, vol. 5, no. 2, 2020, https://doi.org/10.1145/3384390
Veeraruna Kavitha, N. Hemachandra and Mayur Zambre, "Opportunistic schedulers and asymptotic price of fairness", Computer Communications, Volume 148, pp 27-41, Dec 2019, DOI https://doi.org/10.1016/j.comcom.2019.08.025 .
Manu K. Gupta, N. Hemachandra and Jayendran Venkateswaran., "Optimal revenue management in two class pre-emptive delay dependent Markovian queue", Applied Mathematical Modelling, Volume 45, pp 31-54, 2017, DOI http://dx.doi.org/10.1016/j.apm.2016.11.016 .
N. Hemachandra, K S N Ragesh and Mohd. Abdul Qavi, "A model for equilibrium in some service-provider user-set interactions", Annals of Operations Research, August 2016, Volume 243, Issue 1–2, pp 95–115, DOI https://doi.org/10.1007/s10479-015-2037-8 .
Vikas Vikram Singh, and N. Hemachandra, "A characterization of stationary Nash equilibria of constrained stochastic games with independent state processes", Operations Research Letters , Volume 42, Issue 1, Pages 48-52, 2014.
Krishna Chaitanya Vanam and N. Hemachandra "Some excess-based solutions for cooperative games with transferable utility", International Game Theory Review, Volume 15, Issue 04, 1340029, December 2013, (DOI: 10.1142/S021919891340029X)
Vikas Vikram Singh, N. Hemachandra and K.S. Mallikarjuna Rao, Blackwell optimality in stochastic games, International Game Theory Review, Volume 15, Issue 04, December 2013 (DOI: 10.1142/S0219198913400252)
K. R. Vemu, S. Bhatnagar and N. Hemachandra, Optimal Multi-layered Congestion Based Pricing Schemes for Enhanced QoS, Computer Networks (Elsevier), Vol.56, Issue 4, pp.1249-1262, March 2012. (DOI: 10.1016/j.comnet.2011.12.004)
D. Bijulal, Jayendran Venkateswaran and N. Hemachandra, Service Levels, System Costs and Stability of Production-Inventory Control Systems, International Journal of Production Research, Vol. 49, No. 23, pp. 7085-7105, 1 December 2011, DOI:10.1080/00207543.2010.53874
S. Bhatnagar, V. Mishra and N. Hemachandra, Stochastic algorithms for discrete parameter simulation optimization, IEEE Transactions on Automation Science and Engineering, Vol. 9, Issue 4, pp.780-793, 2011. (DOI:10.1109/TASE.2011.2159375)
S. Bhatnagar, N. Hemachandra and V. Mishra, Stochastic approximation algorithms for constrained optimization via simulation, ACM Transactions on Modeling and Computer Simulation, Vol. 21, Issue 3, pp. 15:1-15:22, 2011.
Krishnamurthy Iyer and N. Hemachandra, Sensitivity analysis and optimal ultimately stationary policies in some constrained discounted cost models, Mathematical Methods in Operations Research, Vol. 71, pp. 401-425, 2010.
M. S. S. Rao, S. A. Soman, Puneet Chitkara, Rajeev K Gajbhiye, N. Hemachandra and B. L. Menezes, Min-max Fair Power Flow Tracing for Transmission System Usage Cost Allocation: A Large System Perspective, IEEE Transactions on Power Systems, Vol. 25, Issue 3, pp. 1457-1468, 2010.
Sudhir K. Sinha, N. Rangaraj and N. Hemachandra, Pricing surplus server capacity for mean waiting time sensitive customers, European Journal of Operational Research, Vol. 205, pp. 159-171, 2010.
Raghav Kumar Gautam, N. Hemachandra, Y. Narahari, Hastagiri Prakash, Devadatta Kulkarni, Jeffrey D. Tew, Optimal auctions for multi-unit procurement with volume discount bids, International Journal of Operational Research, Special Issue on Game Theory Applications in Operations Research and Management Science, Vol. 6, pp. 70-91, 2009.
Y. Narahari, N. Hemachandra, Nikesh Kumar Srivastava, Devadatta M. Kulkarni, Jeffrey D. Tew, Incentive compatible mechanisms for decentralised Supply Chain Formation, International Journal of Operational Research, Special Issue on Game Theory Applications in Operations Research and Management Science, Vol. 6, pp. 27-53, 2009.
D. More, A. S. Babu and N. Hemachandra, Business excellence through supply chain flexibility in Indian industries: an investigative study, International Journal of Business Excellence, Vol. 1, pp. 9-31, 2008.
V. Mariappan, A. S. Babu and N. Hemachandra, Collaborative maintenance decisions for manufacturing facilities, International Journal of Preventive maintenance, Special Issue on Reliability and Condition-based Maintenance, Vol. 4, Number 3, pp 225-232, July 2008.
S. K. Sinha, N. Rangaraj and N. Hemachandra, Logistics contracts to increase supply chain effectiveness: an illustration of a two-way penalty contract, International Journal of Logistics Systems and Management, vol. 4, Issue 3, pp. 313 - 337, 2008.
M. S. Gharote, N. Hemachandra and Narayan Rangaraj, Periodic Review for Reverse Logistics with Remanufacturing, Stocking and Disposal, Technology, Operations and Management, vol 1, pp. 30-44, 2008.
A. Mittal and N. Hemachandra, Learning algorithms for finite horizon constrained Markov decision processes Journal of Industrial and Management Optimization (JIMO), vol. 3, pp. 429-444, 2007.
A. Chande, S. Dhekane, N. Hemachandra and N. Rangaraj, Perishable Inventory Management and Dynamic Pricing using RFID Technology, Sadhana, Special Issue on e-Commerce, vol. 30. Parts 2 & 3, pp. 445-462, 2005.
R. Tandra, N. Hemachandra and D. Manjunath, Join Minimum Cost Queue: Stability and Performance Bounds, Probability in the Engineering and Informational Sciences, vol. 18, pp. 445-472, 2004.
R. Tandra, N. Hemachandra and D. Manjunath, DiffServ Node with Join Minimum Cost Queue Policy and Multiclass Traffic, Performance Evaluation, vol. 55, pp. 69-91, 2004.
N. Hemachandra and S. K. Eedupuganti, Performance Analysis and Buffer Allocations in Some Open Assembly Systems, Computers and Operations Research, Vol. 30, pp. 695-704, 2003.
N. Hemachandra and Y. Narahari, A Mathematical Programming Approach to Optimal Markovian Switching of Poisson Arrival Streams to Queueing Systems, Queueing systems: Theory and Applications, Vol. 36, 2001, pp. 443-461.
Y. Narahari, N. Hemachandra and M. S. Gaur, Transient Analysis of Multiclass Manufacturing Systems with Priority Scheduling, Computers and Operations Research, Vol. 24, 1997, pp. 387-398.
Y. Narahari and N. Hemachandra, On the Optimality of Exhaustive Service Policies in Multiclass Systems with Modulated Arrivals and Switchovers, Sadhana, Vol. 22, Part 1, 1997, pp. 69-82.
Communicated Papers, Technical Reports, etc.
J. Balaji, and N. Hemachandra, "Multiple Optima and Sensitivity Analysis of (s, S) policies" (Under Revision)
N. Hemachandra, and V. Cheriyan, "Bounds for Covariances and Variances of Truncated Random Variables" .
A Chande, N. Hemachandra, and N. Rangaraj, "Fixed Life Perishable Inventory Problem and Approximation under Price Promotion" (PDF Link)
Sudhir K. Sinha, N. Rangaraj, and N. Hemachandra, "Pricing surplus server capacity for mean waiting time sensitive customers" (PDF Link)
Vikas Vikram Singh, N. Hemachandra and K. S. Mallikrajuna Rao, "On computing Nash equilibrium in stochastic games", (PDF Link)
N. Hemachandra and Bharat Singh Raghav, "On a conjecture and performance of a two class delay dependent priority queue", (PDF Link)
Vikas Vikram Singh and N. Hemachandra, "Some More Results on Blackwell-Nash Equilibrium in Stochastic Games",
Manu K Gupta, N Hemachandra and J. Venkateswaran, "On Completeness and Equivalence of Some Dynamic Priority Schemes",
Manu K Gupta and N. Hemachandra and J. Venkateswaran, "A proof of conjecture arising from joint pricing and scheduling problem". (PDF Link)
Manu K Gupta and N. Hemachandra and J. Venkateswaran, "Optimal revenue management in two class pre-emptive delay dependent Markovian queues". (PDF Link)
N. Hemachandra and Puja Sahu, "Some Aspects of Estimators for Variance of Normally Distributed Data". (PDF Link)
N. Hemachandra and Manu K. Gupta, "Nash equilibrium in pricing surplus server capacity model and equilibrum sets in some related models".
Hemachandra, N. and Sahu, P. "A Geometric Viewpoint of the Selection of the Regularization Parameter in Some Support Vector Machines" Technical Report. (PDF Link)
Hemachandra, N., Tripathi, S. and Patil, K., "Equilibrium sets of some GI/M/1 queues (with more examples)" Technical Report. (PDF Link)
Shobhit Bhatnagar and Nandyala Hemachandra , "New Dirichlet change point detection algorithms and their use for decentralized control of non-stationary network traffic"
Yashwardhan Didwania, Jayakrishanan Nair and Nanadyala Hemachandra, "Unsupervised crowdsourcing with accuracy and cost guarantees"
Prashant Trivedi and Nandyala Hemachandra, "Multi-agent natural actor-critic reinforcement learning algorithms"
Refereed Conference Proceedings
Sandhya Tripathi, N. Hemachandra and Prashant Trivedi "Interpretable feature subset selection: A Shapley value based approach", Proceedings of 2020 IEEE International Conference on Big Data (Big Data), Special Session on Explainable Artificial Intelligence in Safety Critical Systems, Dec 10-13, Atlanta, GA, USA, 978-1-7281-6251-5/20/$31.00, 5463--5472, 2020
A. Verma, Hanawal, M. K., and Hemachandra, N., “Thompson Sampling for Unsupervised Sequential Selection”, Asian Conference on Machine Learning (ACML). 2020.
A. Verma, Hanawal, M. K., and Hemachandra, N., “Unsupervised Online Feature Selection for Cost-Sensitive Medical Diagnosis”, NetHealth, COMSNETS. 2020.
Sandhya Tripathi and N Hemachandra "Cost Sensitive Learning in the Presence of Symmetric Label Noise". In Advances in Knowledge Discovery and Data Mining. PAKDD 2019. DOI: 10.1007/978-3-030-16148-4_2
Puja Sahu and N. Hemachandra "Optimal PAC-Bayesian posteriors for Stochastic Classifiers and their use for Choice of SVM Regularization Parameter”, Proceedings of The Eleventh Asian Conference on Machine Learning, Nagoya, Japan, Proceedings of Machine Learning Research 101:1--48, 2019.
Sahu, P and Hemachandra, N. Some new PAC-Bayesian bounds and their use in selection of regularization parameter for linear SVMs. In Proceedings of The ACM India Joint International Conference on Data Science & Management of Data, Goa, India, January 11–13, 2018 (CoDS-COMAD ’18). DOI: 10.1145/3152494.3152514"
Sandhya Tripathi and N Hemachandra "Scalable linear classifiers based on exponential loss functions". In Proceedings of The ACM India Joint International Conference on Data Science & Management of Data, Goa, India, January 11–13, 2018 (CoDS-COMAD ’18).. DOI: 10.1145/3152494.3152521
Hemachandra, N. and Sahu, P. "A Geometric Viewpoint of the Selection of the Regularization Parameter in Some Support Vector Machines", The Third International Conference on Mining Intelligence and Knowledge Exploration, IIIT Hyderabad, Hyderabad, 12/2015 (DOI: 10.1007/978-3-319-26832-314)
Y. Narahari, N. Hemachandra and M. S. Gaur "Transient analysis of a multi-class production facility with priority scheduling" Proceedings of the SME International Conference on Computer Intergrated Manufacturing, Singapore, June, 1995.
Y. Narahari and N. Hemachandra, "Non-stationary models of manufacturing systems: Relevance and analysis" Proceedings of the 10th IEEE International Symposium on Intelligent Control, Monterey, USA, August, 1996.
D. Manjunath, A. Goel and N. Hemachandra, "DiffServ Node with Join Minimum Cost queue policy: Analysis with multiclass traffic" IEEE GLOBECOM 2002, Taipei, Taiwan, November, 2002
V. Mariappan, N. Hemachandra and A Subash Babu, "Optimal preventive maintenance oplicy using GRG algorithm" International Conference on Operations Research for Development, ICCORD, Chennai, 27-30 December 2002.
K Chandrasekhar, Nitish Dave, N. Hemachandra, Narayan Rangaraj, "Timing of Discount Offers for Perishable Inventories", Sixth Asia Pacific Operations Research Society, Delhi, December 2003.
M.S.Gharote, N.Hemachandra and N. Rangaraj, "Periodic Review Inventory Policies for a Hybrid Production System with Stocking and Disposal Options", ISL-2004 (International Symposium on Logistics) at the Indian Institute of Management, Bangalore, July 2004.
A. Chande, S. Dekhane, N. Hemachandra and N. Rangarj, "Perishable inventory management and RFID technology", Supply Chain Management in Global Enterprise, Proceedings of the 8th Annual International Conference of the Society of Operations Management, Mumbai, December 2004.
K. Raghupati, N. Rangaraj and N. Hemachandra, "Bid Estimation in Combinatorial Auctions", Supply Chain Management in Global Enterprise, Proceedings of the 8th Annual International Conference of the Society of Operations Management, Mumbai, December 2004.
S. K. Sinha, N. Rangaraj and N. Hemachandra, "Study of a two-way transportation contract", Proceedings of the fifth International Conference on Operations Research for Development ICORD-V, Jamshedpur, India, December 2005.
R. Krishnamurthy Iyer and N. Hemachandra, "Ultimately stationary deterministic strategies for stochastic games", Proceedings of the International Conference on Advances in Control and Otptimization of Dynamical Systems (ACODS2007), Bangalore, February 2007, 414-421.
Raghav Gautam, N. Hemachandra, H. Prakash and Y. Narahari, "Optimal auctions for multi-unit procurement with volume discount bids", Proceedings of IEEE Conference on Electronic Commerce (IEEE CEC-2007), Tokyo, pp 21-28, July 2007.
V. Mishra, S. Bhatnagar and N. Hemachandra, "Discrete parameter simulation optimization algorithms with applications to admission control with dependent service times", Proceedings of IEEE Conference on Decision and Control, New Orleans, USA, pp.2986-2991, Dec.12-14, 2007.
K. R. Vemu, S. Bhatnagar and N. Hemachandra, "Link route pricing for enhanced QoS", Proceedings of IEEE Conference on Decision and Control, New Orleans, USA, pp.1504-1509, Dec.12-14, 2007.
K. R. Vemu, S. Bhatnagar and N. Hemachandra, "An optimal weighted-average congestion based pricing scheme for enhanced QoS", Proceedings of International Conference on Distributed Computing and Internet Technology (Published in Distributed Computing and Internet Technology, Eds.T.Janowski and H.Mohanty, LNCS 4882, pp.135-145, Springer, 2007), December 17-20, 2007, Bangalore, India.
D. Bijulal and J. Venkateswaran and Hemachandra N., "Stability Considerations and Service Level Measures in Production - Inventory Systems: a Simulation Study", Proceedings of the Fifth Annual IEEE Conference on Automation Science and Engineering (IEEE CASE09), Bangalore, 489-494, August 22-27, 2009.
Jayendran Venkateswaran, Kaushik Margabandu, D. Bijulal and N. Hemachandra, "Simulation-based Analysis of Service Levels in Stable Production-Inventory Systems", Proceedings of 28th International Conference of the System Dynamics Society, Washington D.C., U.S.A, July 24-28, 2011.
D. Bijulal, Jayendran Venkateswaran, N. Hemachandra, "Impact of Control Parameters on Bullwhip Measure of Production-Inventory Systems", International Conference on Advances in Supply Chain and Manufacturing Management (ICASCMM 2011), IIT Kharagpur, Dec 16-18, 2011.
Manu K. Gupta, Hemachandra, N., and Venkateswaran, J., "Optimal pricing and pre-emptive scheduling in exponential server with two classes of customers", International Conference on Optimization, Computing and Business Analytics . Allied Publishers, Kolkata, India, pp. 103-108, 2012.
Veeraruna Kavitha, N. Hemachandra and Debayan Das, "Fairness via priority scheduling", 51st Annual Allerton Conference on Communication, Control, and Computing October 2-4, 2013, University of Illinois at Urbana-Champaign, IL, USA
Manu K. Gupta, Hemachandra, N., and Venkateswaran, J., "On mean waiting time completeness and equivalence of EDD and HOL-PJ dynamic priority schemes in 2-class M/G/1 queue", 8th International Conference on Performance Evaluation Methodologies and Tools (ValueTools) , Bratislava, Slovakia. 2014 (DOI: 10.4108/icst.valuetools.2014.258212)
Manu K. Gupta and Hemachandra, N., "On 2-moment Completeness of Non Pre-emptive, Non Anticipative Work Conserving Scheduling Policies in Some Single Class Queues", 13th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) , IIT Bombay, Mumbai, 05/2015 (DOI: 10.1109/WIOPT.2015.7151082)
Manu K. Gupta and Hemachandra, N., "On a Conservation Law and the Achievable Region for Waiting Time Tail Probabilities in 2-class M/G/1 Queueing Systems", International Workshop on Resource Allocation, Cooperation and Competition in Wireless Networks (RAWNET) , IIT Bombay, Mumbai, 05/2015 (DOI: 10.1109/WIOPT.2015.7151064)
P. Mayekar, J. Venkateswaran, Manu K. Gupta and N. Hemachandra. "Performance analysis and decomposition results for some dynamic priority schemes in 2-class queues", International Workshop on Device-to-Device Communications (D2D) , IIT Bombay, Mumbai, 05/2015 (DOI: 10.1109/WIOPT.2015.7151062)
Kumar, A.; Kavitha, V.; Hemachandra, N. "Power constrained DTNs: Risk MDP-LP approach", International Workshop on Device-to-Device Communications (D2D) , IIT Bombay, Mumbai, 05/2015 (DOI: 10.1109/WIOPT.2015.7151067)
Conference presentations and Talks
N. Hemachandra and Y. Narahari, "A linear programming approach to optimal scheduling in a stochastic manufacturing system", Proceedings of the International Conference on Agile Manufacturing, Bangalore, Febraury, 1996.
N Hemachandra and Balaji J, "Robustness of (s,S) Policies in Inventory Systems ", Invited talk at Proceedings of IT-MLS 2003, IISc Bangalore, December 2003.
A. Mittal and N. Hemachandra, "Learning Algorithms for Finite Horizon Constrained Markov Decision Processes", International Conference on Operations Research Applications in Infrastructure Development in Conjuction with the 2005 Annual Convention of Operational Research Society of India, ICORAID-2005-ORSI, Bangalore, December 2005
S. Dekhane, Narayan Rangaraj, N. Hemachandra, M. Patil and M. Padalkar, "The Counter Bid Problem", International Conference on Operations Research Applications in Infrastructure Development in Conjuction with the 2005 Annual Convention of Operational Research Society of India, ICORAID-2005-ORSI, Bangalore, December 2005
A. Sarkar, N. Hemachandra and K. Suresh Kumar, "An Approach to Pricing of Bonds", 37th Annual Convention of Operational Research Society of India, January, 2005, Ahemadabad.
Kartikeya S. Puranam and N. Hemachandra, "Sensitivity Analysis of the Control Limit with respect to the Cost Parameters in an M/M/1 Queue", 37th Annual Convention of Operational Research Society of India, January, 2005, Ahemadabad.
"Sensitivity analysis and optimal ultimately stationary policies in Markov decision models", IMI Seminar, Dept. of Mathematics, IISc., 17.08.2006.
"An approximate learning algorithm for a continuous time risk sensitive asset management model", Workshop on Stochastic Approximations and applications, Dept. of CSA, IISc. Bangalore, 28th, October, 2006.
"Learning algorithms for some asset management models" Bangalore Probability Seminar, 20th November, 2006.
"Sensitivity analysis and related results for some dynamic decision models" , International Conference on Stochastic Processes and Applications, 20th July 2007. A thematic conference organized by IISc Mathematics Initiative (IMI), IISc., Bangalore.
Santosh Srinivas, N. Hemachandra and Y. Narahari. "A core and Shapley value analysis of cooperative bidding in sponsored search auctions", Managing Complexity in a Distributed World 2008 (MCDES 2008), an IISc Centenary Conference of the Division of Electrical Sciences, May 27-31, 2008.
"A stochastic game based model for pollution tax", Workshop on Operations Research and Data Analytics on November 20, 2009, organized by IBM and ISB at GLAMS Center, Indian School of Business, Hyderabad. The theme of the workshop is `Risk management in uncertain world'.
"Quadratic programs and some constrained stochastic games", School of Technology and Computer Science, TIFR, Mumbai, 12th May 2011.
"Performance analysis of a delay dependent priority queue arising from a joint pricing and queue management model", International Conference on Advances in Modeling, Optimization and Computing, AMOC-2011, Department of Mathematics, IIT Roorkee, 5--7 December, 2011.
"An Excess Based Solution Concept for Cooperative Games with Transferable Utility", International Conference on Game Theory and Operations Research Applications, GTORA 2012, ISI Chennai, Jan 5-7, 2012.
"A model for equilibrium in some firm-market interactions", International Symposium on Applied Optimization and Game-Theoretic Models, ISAOGTM-13, ISI, Delhi, 9-Jan-2013 to 11-Jan-2013.
"A Model for Equilibrium in Some Service-provider User-set Interactions" School of Technology and Computer Science, TIFR, Mumbai, 16th April 2013.
"Why are some queues (not) in equilibrium?" Electical Engineering Colloquium, IIT Bombay, 4th Feb. 2015