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Prediction-Correction Algorithms for Time-Varying Constrained Optimization

Andrea Simonetto, Emiliano Dall'Anese
2017 IEEE Transactions on Signal Processing  
This paper develops online algorithms to track solutions of time-varying constrained optimization problems.  ...  of time-varying convex problems.  ...  MINIMAX PROBLEMS This section focuses on constrained time-varying minimax problems, and develops a prediction-correction algorithm to track the optimizer of the minimax problem over time.  ... 
doi:10.1109/tsp.2017.2728498 fatcat:msy7dr2yevhsncsyprojjcpeeq

Time-Varying Optimization with Optimal Parametric Function [article]

Mohsen Amidzadeh
2023 arXiv   pre-print
We formulate this problem as a time-varying optimization using continuous-time parametric functions and derive a dynamical system for tracking the optimal solution.  ...  We benchmark the performance of the proposed algorithm with the prediction-correction method from the optimality and computational complexity point-of-views.  ...  In [9] , prediction-correction methods have been devised, in the dual space, to track the solutions of time-varying linearly constrained problems.  ... 
arXiv:2210.00931v2 fatcat:wfotvy5mzngafk5tfgokynas7y

tvopt: A Python Framework for Time-Varying Optimization [article]

Nicola Bastianello
2021 arXiv   pre-print
This paper introduces tvopt, a Python framework for prototyping and benchmarking time-varying (or online) optimization algorithms.  ...  Then it discusses the different components of the framework and their use for modeling and solving time-varying optimization problems.  ...  Emiliano Dall'Anese for the many valuable discussions.  ... 
arXiv:2011.07119v2 fatcat:lkxqwmloqzhx3ppju7aebfdtjy

Time-Varying Optimization: Algorithms and Engineering Applications [article]

Andrea Simonetto
2018 arXiv   pre-print
The talk was a general overview of the state of the art of time-varying, mainly convex, optimization, with special emphasis on discrete-time algorithms and applications in energy and transportation.  ...  This write-up is mathematically correct, while its style is somewhat less formal than a standard paper.  ...  Prototypical algorithm As for the running methods, we report here a prototypical prediction-correction algorithm, here focussed on the projected gradient (but similar for gradient and dual ascent) • Time  ... 
arXiv:1807.07032v2 fatcat:kjjzks2wgraufheecbri2cv7eq

Online Time-Varying Topology Identification via Prediction-Correction Algorithms [article]

Alberto Natali, Mario Coutino, Elvin Isufi, Geert Leus
2021 arXiv   pre-print
In this paper, we address the problem of dynamic topology identification by building on recent results from time-varying optimization, devising a general-purpose online algorithm operating in non-stationary  ...  Signal processing and machine learning algorithms for data supported over graphs, require the knowledge of the graph topology.  ...  The general time-varying optimization framework, adapted to our case, is summarized in Algorithm 1.  ... 
arXiv:2010.11634v2 fatcat:xli2h35owrbjvivorru3jaf6gm

Dual Prediction-Correction Methods for Linearly Constrained Time-Varying Convex Programs [article]

Andrea Simonetto
2018 arXiv   pre-print
Up to now, Prediction-correction algorithms have been developed in the primal space, both for unconstrained and simply constrained convex programs.  ...  Recently, a novel prediction-correction methodology has been put forward to set up iterative algorithms that sample the continuously-varying optimization program at discrete time steps and perform a limited  ...  CONCLUSIONS We have developed dual prediction-correction methods to track the solution trajectory of time-varying linearly constrained convex programs.  ... 
arXiv:1709.05850v2 fatcat:mss4qcgtfnh5tf77mw5qytakra

Online Time-Varying Topology Identification Via Prediction-Correction Algorithms

Alberto Natali, Mario Coutino, Elvin Isufi, Geert Leus
2021 ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
In this paper, we address the problem of dynamic topology identification by building on recent results from time-varying optimization, devising a general-purpose online algorithm operating in non-stationary  ...  Signal processing and machine learning algorithms for data supported over graphs, require the knowledge of the graph topology.  ...  The general time-varying optimization framework, adapted to our case, is summarized in Algorithm 1.  ... 
doi:10.1109/icassp39728.2021.9415053 fatcat:njxijr66xjfjfogtsz5jjsn24u

Nonlinear Optimization Filters for Stochastic Time-Varying Convex Optimization [article]

Andrea Simonetto, Paolo Massioni
2024 arXiv   pre-print
We look at a stochastic time-varying optimization problem and we formulate online algorithms to find and track its optimizers in expectation.  ...  The optimization algorithms are then based on an extended Kalman filter in the unconstrained case, and on a bilinear matrix inequality condition in the constrained case.  ...  Assumption 1 is often required for time-varying optimization [5] .  ... 
arXiv:2301.13646v2 fatcat:gg5kyl2dqbgn3joivlwrturxa4

Control Optimization of Stochastic Systems Based on Adaptive Correction CKF Algorithm

FengJun Hu, Qian Zhang, Gang Wu
2020 International Journal of Aerospace Engineering  
adding memory factor to the filter, and the disturbance factors in nonlinear time-varying discrete stochastic systems are eliminated by multistep feedback predictive control strategy, so as to improve  ...  Firstly, a nonlinear time-varying discrete stochastic system model with stochastic disturbances is constructed.  ...  Cubature Kalman Filter Algorithm with Adaptive Correction Set the state values of nonlinear time-varying discrete stochastic systems is x k/k , the state estimate is xk/k .  ... 
doi:10.1155/2020/2096302 fatcat:pis26c4kzzgjvc3lwroz32c4sy

Time-Varying Convex Optimization: Time-Structured Algorithms and Applications [article]

Andrea Simonetto, Emiliano Dall'Anese, Santiago Paternain, Geert Leus, Georgios B. Giannakis
2020 arXiv   pre-print
The present paper reviews a broad class of state-of-the-art algorithms for time-varying optimization, with an eye to both algorithmic development and performance analysis.  ...  Recent years have witnessed a major shift from traditional optimization paradigms grounded on batch algorithms for medium-scale problems to challenging dynamic, time-varying, and even huge-size settings  ...  Prediction-correction algorithms. We have presented a few predictors for discrete-time time-varying optimization algorithms. No general result exists to encompass all the predictors.  ... 
arXiv:2006.08500v1 fatcat:44ghmacygfchxhozxxyjzfddsi

Prediction-Correction Algorithm for Time-Varying Smooth Non-Convex Optimization [article]

Hidenori Iwakiri, Tomoya Kamijima, Shinji Ito, Akiko Takeda
2024 arXiv   pre-print
The prediction-correction algorithms used in smooth time-varying optimization can achieve better accuracy than that of the time-varying gradient descent (TVGD) algorithm.  ...  Furthermore, we present convergence analyses of the TVGD and proposed prediction-correction algorithms for non-strongly-convex functions for the first time.  ...  Recent Work on the Prediction-Correction Algorithm Various prediction-correction algorithms have been proposed and analyzed for solving time-varying smooth optimization problems including an SC function  ... 
arXiv:2402.06181v1 fatcat:rwswcitilbewpmdnqc54zuhity

Suboptimal Safety-Critical Control for Continuous Systems Using Prediction-Correction Online Optimization [article]

Shengbo Wang, Shiping Wen, Yin Yang, Yuting Cao, Kaibo Shi, Tingwen Huang
2022 arXiv   pre-print
This paper investigates the control barrier function (CBF) based safety-critical control for continuous nonlinear control affine systems using the more efficient online algorithms through time-varying  ...  Considering the lag effect of tracking and exploiting the system information, the prediction method is added to the algorithms which thereby achieves a exponential convergence rate to the time-varying  ...  A brief review of the prediction-correction structure for general time-varying optimization problems as follows will be helpful for designing and analyzing the developed algorithms. B.  ... 
arXiv:2203.15305v2 fatcat:icq3am6tangopi3abmbq2okfsq

Real-Time Facial Feature Extraction by Cascaded Parameter Prediction and Image Optimization [chapter]

Fei Zuo, Peter H. N. de With
2004 Lecture Notes in Computer Science  
Second, we use the generic Simplex algorithm to refine the fitting results in a constrained parameter space, in which both the pose and the shape deformation parameters are optimized.  ...  We propose a new fast facial-feature extraction technique for embedded face-recognition applications.  ...  (when a global stochastic optimization algorithm such as the genetic algorithm is applied).  ... 
doi:10.1007/978-3-540-30126-4_79 fatcat:huqmmdkcxzbv7f4yqehmtm3g6m

2012 Subject Index

2012 Journal of Guidance Control and Dynamics  
Design for NASA Generic Transport Model G12-088 Time-Varying Dynamics of a Micro Air Vehicle with Variable-Sweep Morphing G12-150 Intelligent Constrained Optimal Control of Aerospace Vehicles with Model  ...  for Large Nonnormal State-Space Systems G12-023 Time-Varying Deadbeat Controller De- sign G12-091 Robust Generalized Predictive Control with Uncertainty Quantification Gi2-113 Covariance-Based Realization  ... 
doi:10.2514/1.60510 fatcat:pmdtengfbzhu5njb4ux3mls5sm

Robust Time-Varying Model Predictive Control with Application to Mobile Robot Unmanned Path Tracking

Mitra Bahadorian, Ray Eaton, Tim Hesketh, Borislav Savkovic
2014 IFAC Proceedings Volumes  
Moreover, a feedback corrective controller formulated as a time-varying finite-time Linear Quadratic Regulator (LQR) is proposed to regulate the uncertain system around its respective nominal uncertainty-free  ...  amenable to real-time applications.  ...  X e (i|k) = X e (i + 1|k − 1) (41) U e (i|k) = U e (i + 1|k − 1) (42) i.e. we employ the constrains from time k − 1 with a prediction i + 1 (from time k − 1) as the constrains at time k for predictions  ... 
doi:10.3182/20140824-6-za-1003.01881 fatcat:o4iwp23muvhsnm7eoo63rpst44
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