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Neural networks have become a prominent approach to solve inverse problems in recent years. Amongst the different existing methods, the Deep Image/Inverse Priors (DIPs) technique is an unsupervised approach that optimizes a highly…

机器学习 · 计算机科学 2023-03-21 Nathan Buskulic , Yvain Quéau , Jalal Fadili

Deep learning-based methods have achieved significant successes on solving the blind super-resolution (BSR) problem. However, most of them request supervised pre-training on labelled datasets. This paper proposes an unsupervised kernel…

图像与视频处理 · 电气工程与系统科学 2024-04-29 Zhixiong Yang , Jingyuan Xia , Shengxi Li , Xinghua Huang , Shuanghui Zhang , Zhen Liu , Yaowen Fu , Yongxiang Liu

Nonlinear Parametric Optimization Network (NLPOpt-Net) is an unsupervised learning architecture to solve constrained nonlinear programs (NLP). Given the structure of an NLP, it learns the parametric solution maps with guaranteed constraint…

机器学习 · 计算机科学 2026-05-04 Bimol Nath Roy , Rahul Golder , MM Faruque Hasan

Client heterogeneity poses significant challenges to the performance of Quantum Federated Learning (QFL). To overcome these limitations, we propose a new approach leveraging deep unfolding, which enables clients to autonomously optimize…

机器学习 · 计算机科学 2025-06-26 Shanika Iroshi Nanayakkara , Shiva Raj Pokhrel

Bilevel optimization is a fundamental tool in hierarchical decision-making and has been widely applied to machine learning tasks such as hyperparameter tuning, meta-learning, and continual learning. While significant progress has been made…

最优化与控制 · 数学 2025-04-25 Nazanin Abolfazli , Sina Sharifi , Mahyar Fazlyab , Erfan Yazdandoost Hamedani

We develop polynomial-time heuristic methods to solve unimodular quadratic programs (UQPs) approximately, which are known to be NP-hard. In the UQP framework, we maximize a quadratic function of a vector of complex variables with unit…

最优化与控制 · 数学 2017-03-28 Shankarachary Ragi , Edwin K. P. Chong , Hans D. Mittelmann

Objective: Estimation of the global optima of multiple model parameters is valuable in imaging to form a reliable diagnostic image. Given non convexity of the objective function, it is challenging to avoid from different local minima.…

机器学习 · 计算机科学 2022-04-06 Hongmei Zhang , Kai Wang , Yan Zhou , Shadab Momin , Xiaofeng Yang , Mostafa Fatemi , Michael F. Insana

With the increased prevalence of neural operators being used to provide rapid solutions to partial differential equations (PDEs), understanding the accuracy of model predictions and the associated error levels is necessary for deploying…

机器学习 · 计算机科学 2026-02-26 Nick Winovich , Mitchell Daneker , Lu Lu , Guang Lin

We propose a neural network-based algorithm for solving forward and inverse problems for partial differential equations in unsupervised fashion. The solution is approximated by a deep neural network which is the minimizer of a cost…

机器学习 · 计算机科学 2019-04-12 Leah Bar , Nir Sochen

We study the Bipartite Unconstrained 0-1 Quadratic Programming Problem (BQP) which is a relaxation of the Unconstrained 0-1 Quadratic Programming Problem (QP). Applications of the BQP include mining discrete patterns from binary data,…

离散数学 · 计算机科学 2013-07-23 Daniel Karapetyan , Abraham P. Punnen

We propose a sequential quadratic programming (SQP) method that can incorporate adaptive sampling for stochastic nonsmooth nonconvex optimization problems with upper-C^2 objectives. Upper-$\Ctwo$ functions can be viewed as…

最优化与控制 · 数学 2023-10-17 J. Wang , I. Aravena , C. G. Petra

Deep reinforcement learning for high dimensional, hierarchical control tasks usually requires the use of complex neural networks as functional approximators, which can lead to inefficiency, instability and even divergence in the training…

机器学习 · 计算机科学 2019-11-26 Yuguang Yang

Mixed-integer quadratic programs (MIQPs) are a versatile way of formulating vehicle decision making and motion planning problems, where the prediction model is a hybrid dynamical system that involves both discrete and continuous decision…

机器人学 · 计算机科学 2024-05-15 Rudolf Reiter , Rien Quirynen , Moritz Diehl , Stefano Di Cairano

In this letter, an accelerated quadratic programming (QP) algorithm is proposed based on the proximal gradient method. The algorithm can achieve convergence rate $O(1/p^{\alpha})$, where $p$ is the iteration number and $\alpha$ is the given…

最优化与控制 · 数学 2022-01-25 Jia Wang , Ying Yang

Indefinite quadratic programs (QPs) are known to be very difficult to be solved to global optimality, so are linear programs with linear complementarity constraints. Treating the former as a subclass of the latter, this paper presents a…

最优化与控制 · 数学 2025-03-18 Xinyao Zhang , Shaoning Han , Jong-Shi Pang

Neural networks (NNs) have been extremely successful across many tasks in machine learning. Quantization of NN weights has become an important topic due to its impact on their energy efficiency, inference time and deployment on hardware.…

机器学习 · 计算机科学 2021-05-06 Burak Bartan , Mert Pilanci

In order to deploy deep models in a computationally efficient manner, model quantization approaches have been frequently used. In addition, as new hardware that supports mixed bitwidth arithmetic operations, recent research on mixed…

机器学习 · 计算机科学 2022-07-12 Xijie Huang , Zhiqiang Shen , Shichao Li , Zechun Liu , Xianghong Hu , Jeffry Wicaksana , Eric Xing , Kwang-Ting Cheng

We consider a linear iterative solver for large scale linearly constrained quadratic minimization problems that arise, for example, in optimization with PDEs. By a primal-dual projection (PDP) iteration, which can be interpreted and…

最优化与控制 · 数学 2020-12-07 Anton Schiela , Matthias Stöcklein , Martin Weiser

In this paper, we consider reinforcement learning of nonlinear systems with continuous state and action spaces. We present an episodic learning algorithm, where we for each episode use convex optimization to find a two-layer neural network…

最优化与控制 · 数学 2024-06-25 Ather Gattami

Image restoration remains a challenging task in image processing. Numerous methods tackle this problem, often solved by minimizing a non-smooth penalized co-log-likelihood function. Although the solution is easily interpretable with…

计算机视觉与模式识别 · 计算机科学 2021-12-21 Mingyuan Jiu , Nelly Pustelnik