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- research-articleJanuary 2025
Command filtered backstepping control of multiple transmission control protocol/active queue management networks with user datagram protocol flows
AbstractIn this study, the congestion control problem for multiple transmission control protocol/active queue management (TCP/AQM) networks with user datagram protocol (UDP) flows is investigated. Taking the UDP stream as the unknown interference and ...
- research-articleJuly 2023
Minimax Theorem for Functions on the Cartesian Product of Branching Polylines
Cybernetics and Systems Analysis (KLU-CASA), Volume 59, Issue 4Pages 567–580https://doi.org/10.1007/s10559-023-00592-0AbstractThe paper proves the minimax theorem for a specific class of functions that are defined on branching polylines in a linear space, not on convex subsets of a linear space. The existence of a saddle point for such functions does not follow directly ...
- educational-resourcesMarch 2023
AI: Connect Four Agent
This assignment allows students to gain experience with AI gameplaying algorithms, implementing minimax and alpha-beta pruning and designing a utility function for measuring game states. The assignment uses Connect Four, a relatively simple fully-...
- abstractMarch 2023
Exploring AI Techniques on Game of Thrones: Hand of the King
SIGCSE 2023: Proceedings of the 54th ACM Technical Symposium on Computer Science Education V. 2Page 1233https://doi.org/10.1145/3545947.3573282This research examines a two-player combinatorial game, Game of Thrones: Hand of the King, and applies several different techniques to develop an effective AI player for this game. We used several approaches including simple game state analysis, ...
- research-articleJuly 2022
Adaptive Bundle Methods for Nonlinear Robust Optimization
INFORMS Journal on Computing (INFORMS-IJOC), Volume 34, Issue 4Pages 2106–2124https://doi.org/10.1287/ijoc.2021.1122Currently, there are few theoretical or practical approaches available for general nonlinear robust optimization. Moreover, the approaches that do exist impose restrictive assumptions on the problem structure. We present an adaptive bundle method for ...
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- research-articleFebruary 2022
Game Minimax Control of Automatic System Bandwidth under Information Counteraction
Automation and Remote Control (ARCO), Volume 83, Issue 2Pages 282–290https://doi.org/10.1134/S0005117922020102AbstractWe consider the problem of finding algorithms for controlling the bandwidth of an automatic system in a game setting, when one of the players (the main control system) tries to improve the quality of transients and the other (the information ...
- research-articleJanuary 2022
Quantile regression with ReLU networks: estimators and minimax rates
The Journal of Machine Learning Research (JMLR), Volume 23, Issue 1Article No.: 247, Pages 11251–11292Quantile regression is the task of estimating a speci_ed percentile response, such as the median (50th percentile), from a collection of known covariates. We study quantile regression with rectified linear unit (ReLU) neural networks as the chosen model ...
- research-articleJanuary 2022
Generalized sparse additive models
The Journal of Machine Learning Research (JMLR), Volume 23, Issue 1Article No.: 70, Pages 3035–3090We present a unified framework for estimation and analysis of generalized additive models in high dimensions. The framework defines a large class of penalized regression estimators, encompassing many existing methods. An efficient computational algorithm ...
- research-articleJanuary 2022
Structure-adaptive manifold estimation
The Journal of Machine Learning Research (JMLR), Volume 23, Issue 1Article No.: 40, Pages 1886–1947We consider a problem of manifold estimation from noisy observations. Many manifold learning procedures locally approximate a manifold by a weighted average over a small neighborhood. However, in the presence of large noise, the assigned weights become so ...
- research-articleJanuary 2022
Topological Derivative of State-Constrained Objective Functions: A Direct Method
SIAM Journal on Control and Optimization (SICON), Volume 60, Issue 1Pages 22–47https://doi.org/10.1137/20M1368732Like the notion of shape derivative, the topological derivative has proven to be both pertinent and useful from the theoretical and numerical points of view. While the shape derivative is a differential, the topological derivative obtained by expansion ...
- research-articleFebruary 2021
New Algorithms for Solving Zero-Sum Stochastic Games
Mathematics of Operations Research (MOOR), Volume 46, Issue 1Pages 255–267https://doi.org/10.1287/moor.2020.1055Zero-sum stochastic games, henceforth stochastic games, are a classical model in game theory in which two opponents interact and the environment changes in response to the players’ behavior. The central solution concepts for these games are the discounted ...
- research-articleJuly 2019
A Multiscale Scan Statistic for Adaptive Submatrix Localization
KDD '19: Proceedings of the 25th ACM SIGKDD International Conference on Knowledge Discovery & Data MiningPages 44–53https://doi.org/10.1145/3292500.3330916We consider the problem of localizing a submatrix with larger-than-usual entry values inside a data matrix, without the prior knowledge of the submatrix size. We establish an optimization framework based on a multiscale scan statistic, and develop ...
- research-articleJanuary 2019
High-Index Optimization-Based Shrinking Dimer Method for Finding High-Index Saddle Points
SIAM Journal on Scientific Computing (SISC), Volume 41, Issue 6Pages A3576–A3595https://doi.org/10.1137/19M1253356We present a high-index optimization-based shrinking dimer (HiOSD) method to compute index-$k$ saddle points as a generalization of the optimization-based shrinking dimer method for index-1 saddle points [L. Zhang, Q. Du, and Z. Zheng, SIAM J. Sci. ...
- research-articleJanuary 2019
Infinite Horizon Average Cost Dynamic Programming Subject to Total Variation Distance Ambiguity
SIAM Journal on Control and Optimization (SICON), Volume 57, Issue 4Pages 2843–2872https://doi.org/10.1137/18M1210514We analyze the per unit-time infinite horizon average cost Markov control model, subject to a total variation distance ambiguity on the controlled process conditional distribution. This stochastic optimal control problem is formulated as a minimax ...
- research-articleJanuary 2019
Zolotarev Iterations for the Matrix Square Root
SIAM Journal on Matrix Analysis and Applications (SIMAX), Volume 40, Issue 2Pages 696–719https://doi.org/10.1137/18M1178529We construct a family of iterations for computing the principal square root of a square matrix $A$ using Zolotarev's rational minimax approximants of the square root function. We show that these rational functions obey a recursion, allowing one to ...
- research-articleJanuary 2018
A Fast Distributed Data-Assimilation Algorithm for Divergence-Free Advection
SIAM Journal on Scientific Computing (SISC), Volume 40, Issue 5Pages A3038–A3066https://doi.org/10.1137/17M1128356In this paper, we introduce a new, fast data assimilation algorithm for a 2D linear advection equation with divergence-free coefficients. We first apply the nodal discontinuous Galerkin (DG) method to discretize the advection equation and then employ a set ...
- research-articleMay 2017
Manipulation of Hamming-based Approval Voting for Multiple Referenda and Committee Elections
AAMAS '17: Proceedings of the 16th Conference on Autonomous Agents and MultiAgent SystemsPages 597–605Several methods exist for electing committees of representatives and conducting multiple referenda based on approval voting. Recently, a family of rules for approval-based voting using ordered weighted averaging was proposed, ranging from a simple ...
- articleMarch 2017
Bounded-input iterative learning control: Robust stabilization via a minimax approach
International Journal of Adaptive Control and Signal Processing (ACSP), Volume 31, Issue 3Pages 417–428https://doi.org/10.1002/acs.2710In this paper, we consider the design problem of making the convergence of the bounded-input, multi-input iterative learning controller presented in our previous work robust to errors in the model-based value of the input-output Jacobian matrix via a ...
- research-articleJanuary 2016
On Source-Term Parameter Estimation for Linear Advection-Diffusion Equations with Uncertain Coefficients
SIAM Journal on Scientific Computing (SISC), Volume 38, Issue 4Pages A2334–A2356https://doi.org/10.1137/15M1034829In this paper, we propose an algorithm for estimating parameters of a source term of a linear advection-diffusion equation with an uncertain advection-velocity field. First, we apply a minimax state estimation technique in order to reduce uncertainty ...
- research-articleSeptember 2015
Data-Efficient Minimax Quickest Change Detection With Composite Post-Change Distribution
IEEE Transactions on Information Theory (ITHR), Volume 61, Issue 9Pages 5172–5184https://doi.org/10.1109/TIT.2015.2458864The problem of quickest change detection is studied, where there is an additional constraint on the cost of observations used before the change point and where the post-change distribution is composite. Minimax formulations are proposed for this problem. ...