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Many important computer vision applications are naturally formulated as regression problems. Within medical imaging, accurate regression models have the potential to automate various tasks, helping to lower costs and improve patient…

机器学习 · 计算机科学 2023-11-08 Fredrik K. Gustafsson , Martin Danelljan , Thomas B. Schön

In several application fields like daily pluviometry data modelling, or motion analysis from image sequences, observations contain two components of different nature. A first part is made with discrete values accounting for some symbolic…

统计理论 · 数学 2008-03-27 Cécile Hardouin , Jian-Feng Yao

Knowing the redshift of galaxies is one of the first requirements of many cosmological experiments, and as it's impossible to perform spectroscopy for every galaxy being observed, photometric redshift (photo-z) estimations are still of…

天体物理仪器与方法 · 物理学 2022-03-09 Ben Henghes , Connor Pettitt , Jeyan Thiyagalingam , Tony Hey , Ofer Lahav

The luminosity functions of galaxies and quasars provide invaluable information about galaxy and quasar formation. Estimating the luminosity function from magnitude limited samples is relatively straightforward, provided that the distances…

天体物理学 · 物理学 2008-11-26 Ravi K. Sheth

We propose a method of testing source evolution theories that is independent of the effects of inhomogeneity, and thus complementary to other studies of evolution. It is suitable for large scale sky surveys, and the new generation of large…

天体物理学 · 物理学 2011-05-23 Charles Hellaby

Multimodal sentiment analysis is a core research area that studies speaker sentiment expressed from the language, visual, and acoustic modalities. The central challenge in multimodal learning involves inferring joint representations that…

机器学习 · 计算机科学 2020-03-02 Hai Pham , Paul Pu Liang , Thomas Manzini , Louis-Philippe Morency , Barnabas Poczos

This paper introduces multimodal conformal regression. Traditionally confined to scenarios with solely numerical input features, conformal prediction is now extended to multimodal contexts through our methodology, which harnesses internal…

机器学习 · 计算机科学 2026-05-15 Alexis Bose , Jonathan Ethier , Paul Guinand

When adopting a model-based formulation, solving inverse problems encountered in multiband imaging requires to define spatial and spectral regularizations. In most of the works of the literature, spectral information is extracted from the…

图像与视频处理 · 电气工程与系统科学 2023-07-03 Min Zhao , Nicolas Dobigeon , Jie Chen

In this paper we consider regression problems subject to arbitrary noise in the operator or design matrix. This characterization appropriately models many physical phenomena with uncertainty in the regressors. Although the problem has been…

统计计算 · 统计学 2021-04-08 Richard J Clancy , Stephen Becker

Models for inferring monocular shape of surfaces with diffuse reflection -- shape from shading -- ought to produce distributions of outputs, because there are fundamental mathematical ambiguities of both continuous (e.g., bas-relief) and…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Xinran Nicole Han , Todd Zickler , Ko Nishino

Multimodal learning aims to improve performance by leveraging data from multiple sources. During joint multimodal training, due to modality bias, the advantaged modality often dominates backpropagation, leading to imbalanced optimization.…

机器学习 · 计算机科学 2025-11-19 Zhe Yang , Wenrui Li , Hongtao Chen , Penghong Wang , Ruiqin Xiong , Xiaopeng Fan

We consider the multi-frequency inverse source problem in the presence of a non-homogeneous medium using passive measurements. Precisely, we derive stability estimates for determining the source from the knowledge of only the imaginary part…

偏微分方程分析 · 数学 2024-04-23 Faouzi Triki , Kristoffer Linder-Steinlein , Mirza Karamehmedovic

We present a simple, efficient and robust approach to improve cosmological redshift measurements. The method is based on the presence of a reference sample for which a precise redshift number distribution (dN/dz) can be obtained for…

宇宙学与河外天体物理 · 物理学 2017-09-13 Nicolas Tejos , Aldo Rodriguez-Puebla , Joel R. Primack

Recent puzzling observations such as the $H_o$ tension, large-scale anisotropies, and massive disk galaxies at high redshifts have been challenging the standard cosmological model. While one possible explanation is that the standard model…

宇宙学与河外天体物理 · 物理学 2024-03-08 Lior Shamir

Accurately characterizing the redshift distributions of galaxies is essential for analysing deep photometric surveys and testing cosmological models. We present a technique to simultaneously infer redshift distributions and individual…

宇宙学与河外天体物理 · 物理学 2016-07-27 Boris Leistedt , Daniel J. Mortlock , Hiranya V. Peiris

Photometric redshifts play an important role as a measure of distance for various cosmological topics. Spectroscopic redshifts are only available for a very limited number of objects but can be used for creating statistical models. A broad…

天体物理仪器与方法 · 物理学 2016-08-30 Kai Lars Polsterer , Antonio D'Isanto , Fabian Gieseke

Models of physical systems are used to explain and predict experimental results and observations. When students encounter discrepancies between the actual and expected behavior of a system, they revise their models to include the newly…

物理教育 · 物理学 2022-07-06 Laura Ríos , Benjamin Pollard , Dimitri R. Dounas-Frazer , H. J. Lewandowski

The notion of concept drift refers to the phenomenon that the distribution generating the observed data changes over time. If drift is present, machine learning models can become inaccurate and need adjustment. While there do exist methods…

机器学习 · 计算机科学 2023-03-17 Fabian Hinder , Valerie Vaquet , Johannes Brinkrolf , Barbara Hammer

The need for multimodal data integration arises naturally when multiple complementary sets of features are measured on the same sample. Under a dependent multifactor model, we develop a fully data-driven orchestrated approximate message…

统计方法学 · 统计学 2026-01-22 Sagnik Nandy , Zongming Ma

Multimodal sentiment analysis is an important area for understanding the user's internal states. Deep learning methods were effective, but the problem of poor interpretability has gradually gained attention. Previous works have attempted to…

计算与语言 · 计算机科学 2023-05-15 Sixia Li , Shogo Okada