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Graph-based diffusion models have shown promising results in terms of generating high-quality solutions to NP-complete (NPC) combinatorial optimization (CO) problems. However, those models are often inefficient in inference, due to the…

机器学习 · 计算机科学 2023-08-24 Junwei Huang , Zhiqing Sun , Yiming Yang

Posterior sampling allows exploitation of prior knowledge on the environment's transition dynamics to improve the sample efficiency of reinforcement learning. The prior is typically specified as a class of parametric distributions, the…

机器学习 · 计算机科学 2024-04-09 Mirco Mutti , Riccardo De Santi , Marcello Restelli , Alexander Marx , Giorgia Ramponi

Estimating high-quality images while also quantifying their uncertainty are two desired features in an image reconstruction algorithm for solving ill-posed inverse problems. In this paper, we propose plug-and-play Monte Carlo (PMC) as a…

图像与视频处理 · 电气工程与系统科学 2024-08-29 Yu Sun , Zihui Wu , Yifan Chen , Berthy T. Feng , Katherine L. Bouman

Sparse learning is a very important tool for mining useful information and patterns from high dimensional data. Non-convex non-smooth regularized learning problems play essential roles in sparse learning, and have drawn extensive attentions…

机器学习 · 计算机科学 2020-10-22 Guannan Liang , Qianqian Tong , Jiahao Ding , Miao Pan , Jinbo Bi

We proposed a robust segmentation and picking workflow to solve the first arrival picking problem for seismic signal processing. Unlike traditional classification algorithm, image segmentation method can utilize the location information by…

图像与视频处理 · 电气工程与系统科学 2021-04-08 Pengyu Yuan , Wenyi Hu , Xuqing Wu , Jiefu Chen , Hien Van Nguyen

Metropolis Hastings nested sampling evolves a Markov chain, accepting new points along the chain according to a version of the Metropolis Hastings acceptance ratio, which has been modified to satisfy the nested sampling likelihood…

统计计算 · 统计学 2020-02-12 Kamran Javid

We develop a fast and accurate grouped penalized credible region approach for variable selection and prediction in Bayesian high-dimensional linear regression. Most existing Bayesian methods either are subject to high computational costs…

统计方法学 · 统计学 2026-01-26 Weichang Yu , Khue-Dung Dang

Building upon score-based learning, new interest in stochastic localization techniques has recently emerged. In these models, one seeks to noise a sample from the data distribution through a stochastic process, called observation process,…

机器学习 · 统计学 2026-02-24 Louis Grenioux , Maxence Noble , Marylou Gabrié , Alain Oliviero Durmus

Graph Neural Networks (GNNs) have received significant attention recently, but training them at a large scale remains a challenge. Mini-batch training coupled with sampling is used to alleviate this challenge. However, existing approaches…

机器学习 · 计算机科学 2023-05-23 Muhammed Fatih Balın , Ümit V. Çatalyürek

In classical sparse representation based classification and weighted SRC algorithms, the test samples are sparely represented by all training samples. They emphasize the sparsity of the coding coefficients but without considering the local…

应用统计 · 统计学 2017-02-17 Shanwen Zhang , Harry Wang , Wenzhun Huang

Neural architecture search has attracted wide attentions in both academia and industry. To accelerate it, researchers proposed weight-sharing methods which first train a super-network to reuse computation among different operators, from…

机器学习 · 计算机科学 2020-12-16 Xin Chen , Lingxi Xie , Jun Wu , Longhui Wei , Yuhui Xu , Qi Tian

We introduce Progressive Prompts - a simple and efficient approach for continual learning in language models. Our method allows forward transfer and resists catastrophic forgetting, without relying on data replay or a large number of…

计算与语言 · 计算机科学 2023-01-31 Anastasia Razdaibiedina , Yuning Mao , Rui Hou , Madian Khabsa , Mike Lewis , Amjad Almahairi

There is a growing number of tasks that work directly on point clouds. As the size of the point cloud grows, so do the computational demands of these tasks. A possible solution is to sample the point cloud first. Classic sampling…

计算机视觉与模式识别 · 计算机科学 2020-04-07 Itai Lang , Asaf Manor , Shai Avidan

Correspondence selection aims to correctly select the consistent matches (inliers) from an initial set of putative correspondences. The selection is challenging since putative matches are typically extremely unbalanced, largely dominated by…

计算机视觉与模式识别 · 计算机科学 2021-07-30 Chen Zhao , Yixiao Ge , Feng Zhu , Rui Zhao , Hongsheng Li , Mathieu Salzmann

Sampling-based motion planners rely on incremental densification to discover progressively shorter paths. After computing feasible path $\xi$ between start $x_s$ and goal $x_t$, the Informed Set (IS) prunes the configuration space…

机器人学 · 计算机科学 2021-04-13 Aditya Mandalika , Rosario Scalise , Brian Hou , Sanjiban Choudhury , Siddhartha S. Srinivasa

This paper studies density-based clustering of point sets. These methods use dense regions of points to detect clusters of arbitrary shapes. In particular, we study variants of density peaks clustering, a popular type of algorithm that has…

数据结构与算法 · 计算机科学 2025-06-04 Shangdi Yu , Joshua Engels , Yihao Huang , Julian Shun

Many computer vision systems require low-cost segmentation algorithms based on deep learning, either because of the enormous size of input images or limited computational budget. Common solutions uniformly downsample the input images to…

计算机视觉与模式识别 · 计算机科学 2022-08-19 Chen Jin , Ryutaro Tanno , Thomy Mertzanidou , Eleftheria Panagiotaki , Daniel C. Alexander

Approximate Bayesian computation (ABC) methods are standard tools for inferring parameters of complex models when the likelihood function is analytically intractable. A popular approach to improving the poor acceptance rate of the basic…

统计方法学 · 统计学 2025-01-27 Henri Pesonen , Jukka Corander

In this paper we develop proximal methods for statistical learning. Proximal point algorithms are useful in statistics and machine learning for obtaining optimization solutions for composite functions. Our approach exploits closed-form…

机器学习 · 统计学 2015-06-02 Nicholas G. Polson , James G. Scott , Brandon T. Willard

The past several years have witnessed the emergence of learned point cloud compression (PCC) techniques. However, current learning-based lossless point cloud attribute compression (PCAC) methods either suffer from high computational…

计算机视觉与模式识别 · 计算机科学 2024-04-11 Kang You , Pan Gao , Zhan Ma