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  • A. Sarić, U. A. Khan, and A. M. Stanković, “Distributed Power Flow Algorithm with Gradient Tracking and Information Exchange,” in 22nd Power Systems Computation Conference, Porto, Portugal, Jun. 2022, under review.

  • B. Bagirgan, H. Raja, J. Rife, U. A. Khan, B. Moaveni, “System identification using mobile sensors: numerical application on a footbridge,” 40th Conference and Exposition on Structural Dynamics (IMAC-XL), Society for Experimental Mechanics, Pittsburgh, PA, Jun. 2022, accepted for publication.

  • A. R. Haensch, I. Ljungberg, U. A. Khan, and B. Moaveni, “Monitoring of offshore wind turbines using measured accelerations and hidden markov models with physics-based initialization,” 40th Conference and Exposition on Structural Dynamics (IMAC-XL), Society for Experimental Mechanics, Pittsburgh, PA, Jun. 2022, accepted for publication.

  • M. Doostmohammadian, T. Charalambous, M. Shafie-khah, N. Meskin and U. A. Khan, “Simultaneous Distributed estimation and attack detection/isolation in social networks: Structural observability, Kronecker-product network, and chi-square detector,” in 1st IEEE International Conference on Autonomous Systems, Montréal, QC, Canada, Aug. 2021, virtual.

  • M. Doostmohammadian, T. Charalambous, M. Shafie-khah, H. Rabiee, and U. A. Khan, “Analysis of Contractions in System Graphs: Application to State Estimation,” in 1st IEEE International Conference on Autonomous Systems, Montréal, QC, Canada, Aug. 2021, virtual.

  • R. Xin, U. A. Khan, and S. Kar, “A hybrid variance-reduced method for decentralized stochastic non-convex optimization,” in 38th International Conference on Machine Learning, Jul. 2021, accepted.
    Acceptance rate: ~21%.

  • M. I. Qureshi, R. Xin, S. Kar, and U. A. Khan, “A decentralized variance-reduced method for stochastic optimization over directed graphs,” in 46th IEEE International Conference on Acoustics, Speech, and Signal Processing, Jun. 2021, accepted.

  • R. Xin, S. Kar, and U. A. Khan, “Decentralized stochastic algorithms for non-convex finite-sum minimization,” in 54th Asilomar Conference on Signals, Systems and Computers, Nov. 2020, Monterey, CA.

  • A. Saric, U. A. Khan, and A. S. Stanković, “Multi-agent approach to multi-area power system state estimation using the gradient tracking,” in 52nd North American Power Symposium, Tempe, AZ, Apr. 2021, accepted.

  • R. Xin, B. Li, S. Kar, and U. A. Khan, “GT-SAGA: A fast incremental gradient method for decentralized finite-sum minimization”, in 59th IEEE Conference on Decision and Control, Jeju Island, Republic of Korea, Dec. 2020, accepted.

  • B. Moynihan, S. Liberatore, B. Moaveni, and U. A. Khan, “Fatigue Life Analysis of Main Shaft Bearings in Wind Turbines Using Strain Measurements Collected on Blades,” in IMAC XXXVIII, Society for Experimental Mechanics, Houston, TX, Feb. 2020.

  • R. Xin, A. K. Sahu, U. A. Khan, S. Kar, “Distributed stochastic optimization with gradient tracking over strongly-connected networks,” 58th IEEE Conference on Decision and Control, Nice, France, Dec. 2019, pp. 8353-8358. Arxiv: Mar. 18, 2019

  • R. Xin, A. K. Sahu, S. Kar, and U. A. Khan, “Distributed empirical risk minimization over directed graphs,” in 53rd Asilomar Conference on Signals, Systems and Computers, Monterey, CA, Nov. 2019, pp. 189-193.

  • F. Iftikhar, U. A. Khan, and M. I. Cheema, “FSR enhancement based on digital design of multi-etalons with asymmetric lengths of cavities,” in IEEE Photonics Conference, San Antonio, TX, Sep. 2019, pp. 1-2.

  • F. Saadatniaki, R. Xin, and U. A. Khan, “Distributed training with mobile agents: Optimization over dynamic directed graphs,” in IEEE Data Science Workshop, Minnesota, MN, Jun. 2019, pp. 37-41.

  • R. Xin and U. A. Khan, IEEE L-CSS paper [J23], accepted for presentation at 57th IEEE Conference on Decision and Control, Miami, FL, Dec. 2018.

  • F. Saadatniaki and U. A. Khan, “Product adoption in heterogeneous networks: An epidemiological perspective,” in 52nd Asilomar Conference on Signals, Systems and Computers, Monterey, CA, Nov. 2018, pp. 1043-1047.

  • F. Saadatniaki, A. Korniienko, G. Scorletti, and U. A. Khan, "On the input-output approach towards distributed estimation," in 17th IEEE European Control Conference, Limassol, Cyprus, Jun. 2018, pp. 2152-2157.

  • S. Safavi, U. A. Khan, S. Kar, and J. M. F. Moura, "Linear distributed algorithms for localization in mobile networks," in IEEE Statistical Signal Processing Workshop, Freiburg, Germany, Jun. 2018, pp. 638-642.

  • R. Xin and U. A. Khan, "Optimization over directed graphs: Linear algorithm with geometric convergence," in Graph Signal Processing Workshop, Lausanne, Switzerland, Jun. 2018.

  • R. Xin, C. Xi, and U. A. Khan, "Subgradient projection over directed graphs using surplus consensus," in IEEE Data Science Workshop, Lausanne, Switzerland, Jun. 2018, pp. 105-109.

  • C. Xi and U. A. Khan, "Optimization over Directed Graphs: Linear Convergence Rate," in 42nd IEEE International Conference on Acoustics, Speech, and Signal Processing, New Orleans, LA, Mar. 2017, pp. 4252-4256.

  • S. Safavi and U. A. Khan, "On the convergence of time-varying fusion algorithms: Application to localization in dynamic networks," in 55th IEEE Conference on Decision and Control, Las Vegas, NV, Dec. 2016, pp. 4907-4912.

  • C. Xi and U. A. Khan, "Distributed Dynamic Optimization over Directed Graphs," in 55th IEEE Conference on Decision and Control, Las Vegas, NV, Dec. 2016, pp. 245-250.

  • S. Safavi and U. A. Khan, "A distributed range-based algorithm for localization in mobile networks," in 50th IEEE Asilomar Conference on Signals, Systems, and Computers, Nov. 2016, Monterey, CA. Best Student Paper

  • C. Xi and U. A. Khan, "Augmented DEXTRA for Fast Distributed Optimization over Directed Graphs," in 54th Annual Allerton Conference on Communication, Control, and Computing, Sep. 2016, Monticello, IL, invited paper.

  • A. Korniienko, U. A. Khan, and G. Scorletti, “Robust sensor localization with locally-computed, global H-design”, in 35th IEEE American Control Conference, Boston, MA, Jul. 2016, pp. 6375-6380.

  • C. Xi, Q. Wu, and U. A. Khan, "Fast Distributed Optimization over Directed Graphs," in 35th IEEE American Control Conference, Boston, MA, Jul. 2016, pp. 6507-6512.

  • S. Safavi and U. A. Khan, "Unbounded connectivity: Asymptotic stability criteria for stochastic LTV systems," in 35th IEEE American Control Conference, Boston, MA, Jul. 2016, pp. 7019-7024.

  • M. Doostmohammadian and U. A. Khan, "Measurement partitioning and observational equivalence in state estimation," in 41st IEEE International Conference on Acoustics, Speech, and Signal Processing, Shanghai, China, Mar. 2016, pp. 4855-4859.

  • U. A. Khan, A. Korniienko, and K. H. Johansson, "An H-based approach for robust sensor localization”, in 54th IEEE Conference on Decision and Control, Osaka, Japan, Dec. 2015, pp. 1719-1724.

  • C. Xi and U. A. Khan, "Directed-Distributed Gradient Descent," in 53rd Annual Allerton Conference on Communication, Control, and Computing, Monticello, IL, Sep. 2015, pp. 1022-1026.

  • S. Safavi and U. A. Khan, "Dynamic leader-follower algorithms in mobile multi-agent networks”, in IEEE Digital Signal Processing Conference, Singapore, Jul. 2015, pp. 10-13.

  • M. Doostmohammadian and U. A. Khan, "Vulnerability of CPS inference to DoS attacks," in 48th IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2014, pp. 2015-2018.

  • C. Xi and U. A. Khan, "On the Impact of Low-Rank Interference on Distributed Multi-Agent Optimization," in 48th IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2014, pp. 1511-1514.

  • S. Safavi and U. A. Khan, "On the convergence rate of swap-collide algorithm for simple task assignment," in 48th IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2014, pp. 1507-1510. Best Student Paper Finalist award.

  • U. A. Khan, “Single parameter distributed estimators for Hermitian systems,” in 8th IEEE Sensor Array and Multichannel Signal Processing Workshop, A Coruña, Spain, Jun. 2014, pp. 213-216.

  • U. A. Khan and S. Aeron, “Distributed averaging in uniform interference,” in 6th IEEE International Symposium on Communications, Control and Signal Processing, Athens, Greece, May 2014.

  • U. A. Khan and S. Aeron, “Information alignment for consensus with interference,” in 39th IEEE International Conference on Acoustics, Speech, and Signal Processing, Florence, Italy, May 2014, pp. 7168-7172.

  • M. Doostmohammadian, S. Pourazarm, and U. A. Khan, “Distributed Algorithm for Shortest Path Problem in Undirected Graphs via Randomized Strategy”, in 11th IEEE International Conference on Networking, Sensing and Control, Miami, FL, Apr. 2014, pp. 463-467. Best Student Paper award.

  • C. Xi and U. A. Khan, "Source localization in complex networks using a frequency-domain approach," in 1st IEEE Global Conference on Signal and Information Processing, Austin, TX, Dec. 2013, pp. 895-898. invited paper.

  • M. Doostmohammadian and U. A. Khan, "On the necessary conditions for distributed observability," in 51st Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, Oct. 2013, invited paper.

  • U. A. Khan and S. Kar, "A decentralized algorithm for the preferred assignment problem in multi-agent systems," in 12th IEEE European Control Conference, Zurich, Switzerland, Jul. 2013, pp. 766-771.

  • M. Doostmohammadian and U. A. Khan, "Topology design in networked estimation: A generic approach," in 32nd IEEE American Control Conference, Washington, DC, Jun. 2013, pp. 4134-4139.

  • U. A. Khan and A. M. Stanković, "Secure distributed estimation in cyber-physical systems," in 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, Vancouver, Canada, May 2013, pp. 5209-5213.

  • M. Doostmohammadian and U. A. Khan, "On the distributed estimation of rank-deficient dynamical systems: A generic approach," in 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, Vancouver, Canada, May 2013, pp. 4618-4622.

  • U. A. Khan and A. M. Stanković, "Security in cyber-physical energy systems," in IEEE Workshop on Modeling and Simulation of Cyber-Physical Energy Systems, Berkeley, CA, May 2013, pp. 1-6.

  • O. Osechas, L. Grymek, and U. A. Khan, "Networked Collaborative Navigation in an Urban Canyon," in Institute of Navigation Pacific PNT Conference, Honolulu, HI, Apr. 2013, pp. 804-810.

  • M. Doostmohammadian and U. A. Khan, "Measurement-induced topology design in distributed estimation," in Information Theory and Applications Workshop, San Diego, CA, Feb. 2013, invited paper.

  • M. I. Cheema, U. A. Khan, A. M. Armani, and A. G. Kirk, "Application of phase shift ring down spectroscopy to microcavities for biosensing," Keynote paper at Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications X, Proc. of SPIE Vol. 8594, San Francisco, CA, Feb. 2013, pp. 859401-859401-6.

  • U. A. Khan, "Coordinated randomness in sparse graphs," in 50th Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, Oct. 2012, pp. 1729-1722, invited paper.

  • V. Minden, C. Youn, and U. A. Khan, "A distributed self-clustering algorithm for autonomous multi-agent systems," in 50th Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, Oct. 2012, pp. 1445-1448.

  • K. Morrissey, G. Solimini, and U. A. Khan, "Distributed control schemes for wind-farm power regulation," in 44th North American Power Symposium, Champaign, IL, Sep. 2012, pp. 1-6.

  • U. A. Khan and M. Doostmohammadian, "A sensor placement and network design paradigm for future smart grids," in 4th IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, San Juan, Puerto Rico, Dec. 2011, pp. 137-140.

  • U. A. Khan and A. Jadbabaie, "Coordinated networked estimation strategies using structured systems theory," in 50th IEEE Conference on Decision and Control, Orlando, FL, Dec. 2011, pp. 2112-2117.

  • U. A. Khan and S. Kar, "A coordination-free distributed algorithm for simple assignment problems using randomized actions," in 45th IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2011, pp. 58-61.

  • M. Doostmohammadian and U. A. Khan, "Communication strategies to ensure generic networked observability in multi-agent systems," in 45th IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2011, pp. 1865-1868.

  • U. A. Khan, "Pareto-based design for anchored consensus: Tradeoffs between the convergence rate and performance," in 49th Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, Sep. 2011, invited paper.

  • V. Ramesh, U. A. Khan and M. D. Ilić, "Data aggregation strategies for aligning PMU and AMI measurements in electric power distribution networks," in 43rd North American Power Symposium, Boston, MA, Aug. 2011, pp. 1-7.

  • U. A. Khan and A. Jadbabaie, "On the stability and optimality of distributed Kalman filters with finite-time data fusion," in 30th IEEE American Control Conference, San Francisco, CA, Jun. 2011, pp. 3405-3410.

  • U. A. Khan, S. Kar, A. Jadbabaie, and J. M. F. Moura, "On connectivity, observability, and stability in distributed estimation," in 49th IEEE Conference on Decision and Control, Atlanta, GA, Dec. 2010, 6639-6644.

  • U. A. Khan, S. Kar, and J. M.F. Moura, "Designing the parameters of high dimensional consensus: Multi-objective optimization and Pareto-optimality," in 35th IEEE International Conference on Acoustics, Speech, and Signal Processing, Dallas, TX, Apr. 2010, pp. 2986-2989.

  • U. A. Khan, S. Kar, and J. M.F. Moura, "Distributed sensor localization using barycentric coordinates," in 3rd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, Aruba, Dutch Antilles, Dec. 2009, pp. 65-68.

  • U. A. Khan, S. Kar, and J. M. F. Moura, "Distributed localization and tracking with coordinated and uncoordinated motion models," in 47th Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, Sep. 2009, pp. 202-208.

  • U. A. Khan, S. Kar and J. M. F. Moura, "Distributed average consensus: Beyond the realm of linearity," in 43rd IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2009, pp. 1337-1342. >

  • U. A. Khan, S. Kar and J. M. F. Moura, "Asymptotic noise analysis of high dimensional consensus," in 43rd IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2009, pp. 191-195. >

  • U. A. Khan, S. Kar and J. M. F. Moura, "Higher dimensional consensus algorithms in sensor networks," in 34th IEEE International Conference on Acoustics, Speech, and Signal Processing, Taipei, Taiwan, Apr. 2009, pp. 2857-2860.

  • U. A. Khan, M. D. Ilić, and J. M. F. Moura, "Cooperation for aggregating complex electric power networks to ensure system observability," in 1st International Conference on Infrastructure Systems, Rotterdam, Netherlands, Nov. 2008, pp. 1-6.

  • U. A. Khan, S. Kar and J. M. F. Moura, "A linear iterative algorithm for distributed sensor localization," in 42nd IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Oct. 2008, pp. 1160-1164 , invited paper.

  • U. A. Khan, S. Kar, B. Sinopoli and J. M. F. Moura, "Distributed sensor localization in Euclidean spaces: Dynamic environments," in 46th Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, Sep. 2008, pp. 361-366, invited paper.

  • M. D. Ilić, L. Xie, U. A. Khan and J. M. F. Moura, "Modeling future cyber-physical energy systems," in IEEE Power Engineering Society General Meeting, Pittsburgh, PA, Jul. 2008, pp. 1-9.

  • U. A. Khan and J. M. F. Moura, "Distributed Iterate-Collapse Inversion (DICI) algorithm for L-banded matrices," in 33rd IEEE International Conference on Acoustics, Speech, and Signal Processing, Las Vegas, NV, Mar.-Apr. 2008, pp. 2529-2532.

  • U. A. Khan and J. M. F. Moura, "Model distribution for distributed Kalman filters: A graph theoretic approach," in 41st IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2007, pp. 611-615.

  • U. A. Khan and J. M. F. Moura, "Distributed Kalman filters in sensor networks: Bipartite fusion graphs," in 15th IEEE Workshop on Statistical Signal Processing, Madison, WI, Aug. 26-29 2007, pp. 700-704.

  • U. A. Khan, M. I. Cheema and N. M. Sheikh, "Adaptive video encoder based on skin tone region detection," in IEEE International Students Conference, ISCON, Lahore, Pakistan, Aug. 2002, pp. 129-134.

  • R. Xin, S. Das, U. A. Khan, and S. Kar, "A stochastic proximal gradient framework for decentralized non-convex composite optimization: Topology-independent sample complexity and communication efficiency," Oct. 2021. Arxiv

  • A. A. Sarić, U. A. Khan, and A. M. Stanković, “The AB algorithm-based distributed state estimation in systems with major outages,” IEEE Transactions on Power Systems, submitted: Jun. 2021.

  • M. Doostmohammadian, Hamid R. Rabiee, H. Zarrabi, U. A. Khan, and T. Charalambous, “Distributed detection and mitigation of biasing attacks over multi-agent networks,” IEEE Transactions on Network Science and Engineering, accepted for publication: Sep. 2021.

  • R. Xin, U. A. Khan, and S. Kar, “A fast randomized incremental gradient method for decentralized non-convex optimization,” IEEE Transactions on Automatic Control, accepted for publication: Sep. 2021. Arxiv

  • R. Xin, U. A. Khan, and S. Kar, “Fast decentralized non-convex finite-sum optimization with recursive variance reduction,” SIAM Journal on Optimization, accepted for publication: Sep. 2021. Arxiv

  • R. Xin, U. A. Khan, and S. Kar, “An improved convergence analysis for decentralized online stochastic non-convex optimization,” IEEE Transactions on Signal Processing, vol. 69, pp. 1842-1858, Mar. 2021. Arxiv IEEE Xplore

  • M. Doostmohammadian, A. Aghasi, T. Charalambous, and U. A. Khan, “Distributed Support-Vector-Machine over dynamic balanced directed graphs,” IEEE Letters to Control System Society, vol. 6, pp. 758-763, Jun. 2021.
    Selected for presentation at IEEE CDC 2021

  • M. I. Qureshi, R. Xin, S. Kar, and U. A. Khan, “Push-SAGA: A decentralized stochastic algorithm with variance reduction over directed graphs,” IEEE Letters to Control System Society, vol. 6, pp. 1202-1207, Jun. 2021. Arxiv
    Selected for presentation at IEEE CDC 2021

  • M. Doostmohammadian and U. A. Khan, "Minimal sufficient conditions for structural observability/ controllability of composite networks via Kronecker product," IEEE Transactions on Signal and Information Processing over Networks, vol. 6, no. 1, pp. 78-87, Dec. 2020. Arxiv; IEEE Xplore

  • F. Saadatniaki, R. Xin, and U. A. Khan, "Decentralized optimization over time-varying directed graphs with row and column-stochastic matrices," IEEE Transactions on Automatic Control, vol. 65, no. 11, pp. 4769-4780, Nov. 2020. Arxiv; IEEE Xplore

  • R. Xin, U. A. Khan, and S. Kar, “Variance-reduced decentralized stochastic optimization with accelerated convergence,” IEEE Transactions on Signal Processing, vol. 68, pp. 6255-6271, Oct. 2020. Arxiv; IEEE Xplore

  • M. I. Qureshi, R. Xin, S. Kar, and U. A. Khan, "S-ADDOPT: Decentralized stochastic first-order optimization over directed graphs," IEEE Letters to Control System Society, vol. 5, no. 3, pp. 953-958, Jul. 2020. Arxiv; IEEE Xplore

  • M. Doostmohammadian and U. A. Khan, “On the complexity of minimum-cost networked estimation of self-damped dynamical systems,” IEEE Transactions on Network Science and Engineering, vol. 7, no. 3, pp. 1891-1900, Jul. 2020. Arxiv; IEEE Xplore

  • R. Xin and U. A. Khan, "Distributed heavy-ball: A generalization and acceleration of first-order methods with gradient tracking," IEEE Transactions on Automatic Control, vol. 65, no. 6, pp. 2627-2633, Jun. 2020. Arxiv; IEEE Xplore

  • F. Iftikhar, U. A. Khan, and M. I. Cheema, “Digital synthesis of multistage etalons based upon unequal cavity lengths,” Journal of the Optical Society of America B, vol.37, no. 6, pp. 1630-1636, 2020. Arxiv; OSA Publishing

  • M. Doostmohammadian, H. Rabiee, and U. A. Khan, “Centrality based epidemic control in complex social networks,” Springer Nature: Social Network Analysis and Mining, 10, 32 (2020). Springer Nature
  • M. Doostmohammadian, H. Rabiee, and U. A. Khan, “Cyber-social systems: Modeling, inference, and optimal design,” in IEEE Systems Journal, vol. 14, no. 1, pp. 73-83, Mar. 2020. Arxiv; IEEE Xplore

  • R. Xin, D. Jakovetic, and U. A. Khan, "Distributed Nesterov gradient methods over arbitrary graphs," IEEE Signal Processing Letters, vol. 26, no. 18, pp. 1247-1251, Jun. 2019. Arxiv; IEEE Xplore
    Selected for presentation at 45th IEEE ICASSP, Barcelona, Spain, May 2020.

  • M. Doostmohammadian and U. A. Khan, "On the controllability of clustered scale-free networks," in Journal of Complex Networks, Oxford University Press, cnz014, Apr. 2019. Arxiv; Oxford University Press

  • C. Xi, V. S. Mai, R. Xin, E. Abed, and U. A. Khan, “Linear convergence in optimization over directed graphs with row-stochastic matrices,” IEEE Transactions on Automatic Control, vol. 63, no. 10, pp. 3558-3565, Oct. 2018. Arxiv; IEEE Xplore

  • M. Doostmohammadian, Hamid R. Rabiee, H. Zarrabi, U. A. Khan, “Observational Equivalence in System Estimation: Contractions in Complex Networks,” IEEE Transactions on Network Science and Engineering, vol. 5, no. 3, pp. 212-224, Sep. 2018. Arxiv; IEEE Xplore

  • R. Xin and U. A. Khan, "A linear algorithm for optimization over directed graphs with geometric convergence," IEEE Control Systems Letters, vol. 2, no. 3, 315-320, Jul. 2018. Arxiv: Mar. 4th, 2018; IEEE Xplore
    Selected for presentation at 57th IEEE Conference on Decision and Control, Miami, FL, USA, Dec. 2018.

  • M. Doostmohammadian, Hamid R. Rabiee, H. Zarrabi, and U. A. Khan, "Structural cost-optimal design of sensor networks for distributed estimation," IEEE Signal Processing Letters, vol. 25, no. 6, pp. 793-797, Jun. 2018. Arxiv; IEEE Xplore

  • C. Xi, R. Xin, and U. A. Khan, “ADD-OPT: Accelerated Distributed Directed Optimization,” IEEE Transactions on Automatic Control, vol. 63, no. 5, pp. 1329-1339, May 2018. Arxiv; IEEE Xplore

  • S. Safavi and U. A. Khan, “Localization in mobile networks via virtual convex hulls,” IEEE Transactions on Signal and Information Processing over Networks, vol. 4, no. 1, pp. 188-201, Mar. 2018. Arxiv; IEEE Xplore

  • C. Xi, Q. Wu, and U. A. Khan, “On the distributed optimization over directed networks,” Neurocomputing, vol. 267, 508-515, Dec. 2017. Arxiv; Elsevier

  • S. Safavi and U. A. Khan, “Asymptotic stability of stochastic LTV systems with applications to distributed dynamic fusion,” IEEE Transactions on Automatic Control, vol. 62, no. 11, pp. 5888-5893, Nov. 2017. Arxiv; IEEE Xplore

  • C. Xi and U. A. Khan, “DEXTRA: A Fast Algorithm for Optimization Over Directed Graphs,” IEEE Transactions on Automatic Control, vol. 62, no. 10, 4980-4993, Oct. 2017. Arxiv; IEEE Xplore

  • M. Doostmohammadian, Hamid R. Rabiee, H. Zarrabi, U. A. Khan, “Distributed Estimation Recovery under Sensor Failure,” IEEE Signal Processing Letters, vol. 24, no. 10, pp. 1532-1536, Oct. 2017. Arxiv; IEEE Xplore

  • S. Safavi and U. A. Khan, “An opportunistic linear-convex algorithm for localization in mobile robot networks,” IEEE Transactions on Robotics, vol. 33, no. 4, pp. 875-888, Aug. 2017. Arxiv; IEEE Xplore
    Selected for presentation at 35th International Conference on Robotics and Automation, Brisbane, Australia, May 2018.

  • C. Xi and U. A. Khan, “Distributed subgradient projection algorithm over directed graphs,” IEEE Transactions on Automatic Control, vol. 62, no. 8, pp. 3986-3992, Oct. 2016. Arxiv; IEEE Xplore

  • U. A. Khan and S. Aeron, “Distributed subspace consensus in the presence of in-network disturbances,” IEEE Transactions on Control of Network Systems, vol. 3, no. 3, pp. 220-230, Aug. 2016. IEEE Xplore

  • S. Safavi and U. A. Khan, “Leader-follower consensus in mobile sensor networks,” IEEE Signal Processing Letters, vol. 22, no. 12, pp. 2249-2253, Dec. 2015. IEEE Xplore
    Selected for presentation at 41st IEEE ICASSP, Shanghai, China, Mar. 2016.

  • U. A. Khan, S. Kar, and J. M. F. Moura, “Linear theory for self-localization: Convexity, barycentric coordinates, and Cayley-Menger determinants,” IEEE Access, vol. 3, pp. 1326-1339, Aug. 2015. IEEE Xplore

  • S. Safavi and U. A. Khan, "Revisiting finite-time distributed algorithms via successive nulling of eigenvalues," IEEE Signal Processing Letters, vol. 22, no. 1, pp. 54-57, Jan. 2015. IEEE Xplore
    Selected for presentation at 40th IEEE ICASSP, Brisbane, Australia, Mar. 2015.

  • U. A. Khan and A. Jadbabaie, "Collaborative scalar-gain estimators for potentially unstable social dynamics with limited communication," Automatica, vol. 50, no. 7, pp. 1909-1914, Jul. 2014. Automatica

  • M. I. Cheema, U. A. Khan, A. M. Armani, and A. G. Kirk, "Towards more accurate microcavity sensors: maximum likelihood estimation applied to a combination of quality factor and wavelength shifts," Optics Express, vol. 21, no. 9, pp. 22817-22828, Sep. 2013.

  • U. A. Khan, "A sensing based adaptive model for the smart grid," IEEE COMSOC Multimedia Communications Technical Committee E-Letter, vol. 6, no. 12, pp. 13-16, Dec. 2011, invited paper.

  • M. D. Ilić, L. Xie, U. A. Khan and J. M. F. Moura, "Modeling of future cyber-physical energy systems for distributed sensing and control," IEEE Transactions on Systems, Man and Cybernetics, Part A: Systems and Humans, vol. 40, no. 4, pp. 825-838, Jul. 2010. IEEE Xplore

  • U. A. Khan, S. Kar, and J. M. F. Moura, "Higher dimensional consensus: Learning in large-scale networks," IEEE Transactions on Signal Processing, vol. 58, no. 5, pp. 2836-2849, May 2010. IEEE Xplore

  • U. A. Khan, S. Kar, and J. M. F. Moura, "DILAND: An algorithm for distributed sensor localization with noisy distance measurements," IEEE Transactions on Signal Processing, vol. 58, no. 3, pp. 1940-1947, Mar. 2010. IEEE Xplore

  • U. A. Khan, S. Kar, and J. M. F. Moura, "Distributed sensor localization in random environments using minimal number of anchor nodes," IEEE Transactions on Signal Processing, vol. 57, no. 5, pp. 2000-2016, May 2009. IEEE Xplore

  • U. A. Khan and J. M. F. Moura, "Distributing the Kalman filter for large-scale systems," IEEE Transactions on Signal Processing, vol. 56, Part 1, no. 10, pp. 4919-4935, Oct. 2008. IEEE Xplore

  • U. A. Khan, W. U. Bajwa, A. Nedić, M. G. Rabbat, A. H. Sayed, "Optimization for Data-driven Learning and Control," Proceedings of the IEEE: Special Issue on Optimization for Data-driven Learning and Control, vol. 118, no. 11, pp. 1863-1868, Nov. 2020. IEEE Xplore

  • R. Xin, S. Pu, A. Nedić, and U. A. Khan, "A general framework for decentralized optimization with first-order methods," Proceedings of the IEEE: Special Issue on Optimization for Data-driven Learning and Control, vol. 118, no. 11, pp. 1869-1889, Nov. 2020. Arxiv; IEEE Xplore

  • R. Xin, S. Kar, and U. A. Khan, “Gradient tracking and variance reduction for decentralized optimization and machine learning,” IEEE Signal Processing Magazine: Special Issue on Distributed Streaming Machine Learning, vol. 37, no. 3, pp. 102-113, May 2020. Arxiv; IEEE Xplore

  • R. Xin, C. Xi, and U. A. Khan, "FROST -- Fast row-stochastic optimization with uncoordinated step-sizes," EURASIP Journal on Advances in Signal Processing: Special Issue on Optimization, Learning, and Adaptation over Networks, 2019:1, Jan. 2019. Arxiv; EURASIP

  • S. Safavi, U. A. Khan, S. Kar, and J. M. F. Moura, "Distributed localization: A linear theory," Proceedings of the IEEE, vol. 106, no. 7, pp. 1204-1223, Jul. 2018. IEEE Xplore

  • M. Doostmohammadian and U. A. Khan, "Graph-Theoretic Distributed Inference in Social Networks," IEEE Journal of Special Topics in Signal Processing--Issue on Signal Processing for Social Networks, vol. 8, no. 4, pp. 613-623, Aug. 2014. Arxiv; IEEE Xplore
    Appears on the journal cover.

  • M. Doostmohammadian and U. A. Khan, "On the genericity properties in distributed estimation: Topology design and sensor placement," IEEE Journal of Special Topics in Signal Processing--Issue on Adaptation and Learning over Complex Networks, vol. 7, no. 2, pp. 195-204, Apr. 2013. Arxiv; IEEE Xplore


  • S. Safavi and U. A. Khan, "GPS-free Navigation and localization in networks of mobile robots," filed: Nov. 2016.

  • U. A. Khan, S. Kar, and J. M. F. Moura, "System and Method for Collaborative Resource Tracking," United States Patent, S. N. 8,896,442, continuation of Patent US 8,531,288; published Nov. 25, 2014. Patent Assignee: Carnegie Mellon University

  • U. A. Khan, S. Kar, and J. M. F. Moura, "System and Method for Collaborative Resource Tracking," United States Patent, S. N. 8,531,288, application filed: Nov. 09, 2010; claims allowed: Feb. 06, 2013; published Sep. 10, 2013. Patent Assignee: Carnegie Mellon University

Longer versions with detailed analysis and proofs of some published papers.
  • M. I. Qureshi, R. Xin, S. Kar, and U. A. Khan, “SADDOPT: Decentralized stochastic first-order optimization over directed graphs,” May 2020. Arxiv

  • R. Xin, U. A. Khan, and S. Kar, “Variance-reduced decentralized stochastic optimization with gradient tracking —Part II: GT-SVRG,” Oct. 07, 2019. Arxiv; Tufts Repository

  • R. Xin, U. A. Khan, and S. Kar, “Variance-reduced decentralized stochastic optimization with gradient tracking —Part I: GT-SAGA,” Sep. 25, 2019. Arxiv

  • R. Xin and U. A. Khan, “Distributed heavy-ball: A generalization and acceleration of first-order methods with gradient tracking,” Aug. 08, 2018. Arxiv

  • R. Xin and U. A. Khan, "A linear algorithm for optimization over directed graphs with geometric convergence: Alternate proof," Mar. 07, 2018. Arxiv

  • S. Safavi, U. A. Khan, S. Kar, and J. M. F. Moura, "Localization in internets of mobile agents: A linear approach,” Feb. 2018. Arxiv

  • R. Xin, C. Xi, and U. A. Khan , “Distributed subgradient projection algorithm over directed graphs: Alternate proof,” Jun. 2017. Arxiv

  • S. Safavi and U. A. Khan, “Asymptotic stability of stochastic LTV systems with applications to distributed dynamic fusion,” Dec. 2014. Arxiv