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Many problems in machine learning involve calculating correspondences between sets of objects, such as point clouds or images. Discrete optimal transport provides a natural and successful approach to such tasks whenever the two sets of…

机器学习 · 统计学 2019-02-28 David Alvarez-Melis , Stefanie Jegelka , Tommi S. Jaakkola

Due to strict rate and reliability demands, wireless image transmission remains difficult for both classical layered designs and joint source-channel coding (JSCC), especially under low latency. Diffusion-based generative decoders can…

机器学习 · 计算机科学 2026-01-13 Jingwen Fu , Ming Xiao , Mikael Skoglund , Dong In Kim

Adapted optimal transport (AOT) problems are optimal transport problems for distributions of a time series where couplings are constrained to have a temporal causal structure. In this paper, we develop computational tools for solving AOT…

概率论 · 数学 2023-04-26 Stephan Eckstein , Gudmund Pammer

We present an efficient method for image segmentation in the presence of strong inhomogeneities. The approach can be interpreted as a two-level clustering procedure: pixels are first grouped into superpixels via a linear least-squares…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Jisui Huang , Andreas Alpers , Ke Chen , Na Lei

We explore the oscillatory behavior observed in inversion methods applied to large-scale text-to-image diffusion models, with a focus on the "Flux" model. By employing a fixed-point-inspired iterative approach to invert real-world images,…

计算机视觉与模式识别 · 计算机科学 2024-11-19 Yan Zheng , Zhenxiao Liang , Xiaoyan Cong , Lanqing guo , Yuehao Wang , Peihao Wang , Zhangyang Wang

Semantic communication has undergone considerable evolution due to the recent rapid development of artificial intelligence (AI), significantly enhancing both communication robustness and efficiency. Despite these advancements, most current…

图像与视频处理 · 电气工程与系统科学 2024-05-24 Jiarun Ding , Peiwen Jiang , Chao-Kai Wen , Shi Jin

Unsupervised domain adaptation is one of the challenging problems in computer vision. This paper presents a novel approach to unsupervised domain adaptations based on the optimal transport-based distance. Our approach allows aligning target…

计算机视觉与模式识别 · 计算机科学 2022-05-24 Thanh-Dat Truong , Naga Venkata Sai Raviteja Chappa , Xuan Bac Nguyen , Ngan Le , Ashley Dowling , Khoa Luu

This dissertation relates to the transition of the state of the art of swept source optical coherence tomography (SS-OCT) systems to a new realm in which the image acquisition speed is improved by an order of magnitude. With the aid of a…

图像与视频处理 · 电气工程与系统科学 2020-02-21 Amir Tofighi Zavareh

Separating sources is a common challenge in applications such as speech enhancement and telecommunications, where distinguishing between overlapping sounds helps reduce interference and improve signal quality. Additionally, in multichannel…

音频与语音处理 · 电气工程与系统科学 2025-03-25 Linda Fabiani , Sebastian J. Schlecht , Isabel Haasler , Filip Elvander

Optimal transport (OT) theory can be informally described using the words of the French mathematician Gaspard Monge (1746-1818): A worker with a shovel in hand has to move a large pile of sand lying on a construction site. The goal of the…

机器学习 · 统计学 2020-03-20 Gabriel Peyré , Marco Cuturi

Recently, Papadakis et al. proposed an efficient primal-dual algorithm for solving the dynamic optimal transport problem with quadratic ground cost and measures having densities with respect to the Lebesgue measure. It is based on the fluid…

数值分析 · 数学 2015-09-02 Jan Henrik Fitschen , Friederike Laus , Gabriele Steidl

This work compares two tomographic imaging technologies, time-domain full-field optical coherence tomography (FFOCT) working in reflection and optical transmission tomography (OTT), using a new optical setup that combines both. We show…

Higher resolution telescopes as well as 3D numerical simulations will require the development of detailed 3D radiative transfer calculations. Building upon our previous work we extend our method to include both continuum and line transfer.…

天体物理学 · 物理学 2009-11-13 E. Baron , Peter H. Hauschildt

This work establishes a framework for solving inverse boundary problems with the geodesic based quadratic Wasserstein distance ($W_{2}$). A general form of the Fr\'echet gradient is systematically derived by optimal transportation (OT)…

数值分析 · 数学 2022-10-31 Gang Bao , Yixuan Zhang

The traditional color-based mean-shift tracking algorithm is popular among tracking methods due to its simple and efficient procedure, however, the lack of dynamism in its target model makes it unsuitable for tracking objects which have…

计算机视觉与模式识别 · 计算机科学 2021-10-25 Seyed Amir Mohammadi , Mohammad Reza Mahzoun

Style transfer aims to combine the content of one image with the artistic style of another. It was discovered that lower levels of convolutional networks captured style information, while higher levels captures content information. The…

计算机视觉与模式识别 · 计算机科学 2019-11-19 Michael Maring , Kaustav Chakraborty

In this paper, we present an accurate and robust scaling operator based on material optical thickness (OT) for the least-squares spherical harmonics (LSP$_N$) method for solving neutron transport problems. LSP$_N$ without proper scaling is…

计算物理 · 物理学 2017-05-17 Weixiong Zheng , Ryan G. McClarren

Obtaining solutions to Optimal Transportation (OT) problems is typically intractable when the marginal spaces are continuous. Recent research has focused on approximating continuous solutions with discretization methods based on i.i.d.…

最优化与控制 · 数学 2021-02-17 Junqi Wang , Pei Wang , Patrick Shafto

We introduce sliced optimal transport dataset distance (s-OTDD), a model-agnostic, embedding-agnostic approach for dataset comparison that requires no training, is robust to variations in the number of classes, and can handle disjoint label…

机器学习 · 计算机科学 2025-05-16 Khai Nguyen , Hai Nguyen , Tuan Pham , Nhat Ho

Transferring linguistic knowledge from a pretrained language model (PLM) to acoustic feature learning has proven effective in enhancing end-to-end automatic speech recognition (E2E-ASR). However, aligning representations between linguistic…

音频与语音处理 · 电气工程与系统科学 2025-05-20 Xugang Lu , Peng Shen , Yu Tsao , Hisashi Kawai