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A new iterative technique is presented for solving of initial value problem for certain classes of multidimensional linear and nonlinear partial differential equations. Proposed iterative scheme does not require any discretization,…

数值分析 · 数学 2016-02-23 Josef Rebenda , Zdeněk Šmarda

Partially observable Markov decision processes (POMDPs) are a powerful abstraction for tasks that require decision making under uncertainty, and capture a wide range of real world tasks. Today, effective planning approaches exist that…

机器学习 · 统计学 2018-05-24 Sebastian Tschiatschek , Kai Arulkumaran , Jan Stühmer , Katja Hofmann

Image denoising is a fundamental challenge in computer vision, with applications in photography and medical imaging. While deep learning-based methods have shown remarkable success, their reliance on specific noise distributions limits…

计算机视觉与模式识别 · 计算机科学 2025-08-28 Dongjin Kim , Jaekyun Ko , Muhammad Kashif Ali , Tae Hyun Kim

We propose an effective framework for multi-phase image segmentation and semi-supervised data clustering by introducing a novel region force term into the Potts model. Assume the probability that a pixel or a data point belongs to each…

计算机视觉与模式识别 · 计算机科学 2017-04-27 Ke Wei , Ke Yin , Xue-Cheng Tai , Tony F. Chan

We propose a novel paradigm for solving Inductive Logic Programming (ILP) problems via deep recurrent neural networks. This proposed ILP solver is designed based on differentiable implementation of the deduction via forward chaining. In…

人工智能 · 计算机科学 2019-06-11 Ali Payani , Faramarz Fekri

Piecewise constant denoising can be solved either by deterministic optimization approaches, based on the Potts model, or by stochastic Bayesian procedures. The former lead to low computational time but require the selection of a…

机器学习 · 计算机科学 2017-10-11 Jordan Frecon , Nelly Pustelnik , Nicolas Dobigeon , Herwig Wendt , Patrice Abry

In present paper we propose seemingly new method for finding solutions of some types of nonlinear PDEs in closed form. The method is based on decomposition of nonlinear operators on sequence of operators of lower orders. It is shown that…

数学物理 · 物理学 2007-05-23 Yu. N. Kosovtsov

Partitioning and grouping of similar objects plays a fundamental role in image segmentation and in clustering problems. In such problems a typical goal is to group together similar objects, or pixels in the case of image processing. At the…

计算机视觉与模式识别 · 计算机科学 2010-10-12 Dorit S. Hochbaum

This paper focuses on solving the multiplicative gamma denoising problem via a variation model. Variation-based regularization models have been extensively employed in a variety of inverse problem tasks in image processing. However,…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Shengkun Yang , Zhichang Guo , Jia Li , Fanghui Song , Wenjuan Yao

Causal learning tackles the computationally demanding task of estimating causal graphs. This paper introduces a new divide-and-conquer approach for causal graph learning, called DCILP. In the divide phase, the Markov blanket MB($X_i$) of…

机器学习 · 计算机科学 2025-07-01 Shuyu Dong , Michèle Sebag , Kento Uemura , Akito Fujii , Shuang Chang , Yusuke Koyanagi , Koji Maruhashi

A common approach to solve inverse imaging problems relies on finding a maximum a posteriori (MAP) estimate of the original unknown image, by solving a minimization problem. In thiscontext, iterative proximal algorithms are widely used,…

计算机视觉与模式识别 · 计算机科学 2024-08-22 Hoang Trieu Vy Le , Audrey Repetti , Nelly Pustelnik

Deep image prior (DIP) is an unsupervised deep learning framework that has been successfully applied to a variety of inverse imaging problems. However, DIP-based methods are inherently prone to overfitting, which leads to performance…

计算机视觉与模式识别 · 计算机科学 2026-04-10 Panagiotis Gkotsis , Athanasios A. Rontogiannis

This work presents an unsupervised and semi-automatic image segmentation approach where we formulate the segmentation as a inference problem based on unary and pairwise assignment probabilities computed using low-level image cues. The…

计算机视觉与模式识别 · 计算机科学 2023-05-16 Ayelet Heimowitz , Yosi Keller

Based on an idea in [4] we propose a new iterative multiplicative filtering algorithm for label assignment matrices which can be used for the supervised partitioning of data. Starting with a row-normalized matrix containing the averaged…

数值分析 · 数学 2018-12-10 Ronny Bergmann , Jan Henrik Fitschen , Johannes Persch , Gabriele Steidl

Dynamic imaging addresses the recovery of a time-varying 2D or 3D object at each time instant using its undersampled measurements. In particular, in the case of dynamic tomography, only a single projection at a single view angle may be…

图像与视频处理 · 电气工程与系统科学 2024-05-09 Berk Iskender , Marc L. Klasky , Yoram Bresler

In this paper, we propose a graph classification approach for automatically determining whether to use a monolithic or a decomposition-based solution method. In this approach, an optimization problem is represented as a graph that captures…

最优化与控制 · 数学 2023-10-12 Ilias Mitrai , Prodromos Daoutidis

Segmentation maps of medical images annotated by medical experts contain rich spatial information. In this paper, we propose to decompose annotation maps to learn disentangled and richer feature transforms for segmentation problems in…

图像与视频处理 · 电气工程与系统科学 2019-06-10 Yizhe Zhang , Michael T. C. Ying , Danny Z. Chen

This article presents the first mixed-integer linear programming (MILP)-based iterative algorithm to solve factorable mixed-integer nonlinear programs (MINLPs) with bounded, differentiable periodic functions to global optimality with an…

最优化与控制 · 数学 2025-10-01 Christopher Montez , Sujeevraja Sanjeevi , Kaarthik Sundar

In this study, our goal is to integrate classical mathematical models with deep neural networks by introducing two novel deep neural network models for image segmentation known as Double-well Nets. Drawing inspirations from the Potts model,…

计算机视觉与模式识别 · 计算机科学 2024-07-30 Hao Liu , Jun Liu , Raymond H. Chan , Xue-Cheng Tai

Deep learning models are used to minimize the number of polyps that goes unnoticed by the experts and to accurately segment the detected polyps during interventions. Although state-of-the-art models are proposed, it remains a challenge to…

图像与视频处理 · 电气工程与系统科学 2023-03-21 Tugberk Erol , Duygu Sarikaya