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Background: In medical imaging, images are usually treated as deterministic, while their uncertainties are largely underexplored. Purpose: This work aims at using deep learning to efficiently estimate posterior distributions of imaging…

图像与视频处理 · 电气工程与系统科学 2023-03-20 Xiaofeng Liu , Thibault Marin , Tiss Amal , Jonghye Woo , Georges El Fakhri , Jinsong Ouyang

Machine learning techniques have been successfully used to classify variable stars on widely-studied astronomical surveys. These datasets have been available to astronomers long enough, thus allowing them to perform deep analysis over…

天体物理仪器与方法 · 物理学 2018-01-31 Patricio Benavente , Pavlos Protopapas , Karim Pichara

Visual error metrics play a fundamental role in the quantification of perceived image similarity. Most recently, use cases for them in real-time applications have emerged, such as content-adaptive shading and shading reuse to increase…

图形学 · 计算机科学 2023-10-16 João Libório Cardoso , Bernhard Kerbl , Lei Yang , Yury Uralsky , Michael Wimmer

Variational autoencoder-based voice conversion (VAE-VC) has the advantage of requiring only pairs of speeches and speaker labels for training. Unlike the majority of the research in VAE-VC which focuses on utilizing auxiliary losses or…

声音 · 计算机科学 2021-12-07 Kei Akuzawa , Kotaro Onishi , Keisuke Takiguchi , Kohki Mametani , Koichiro Mori

In industrial recommender systems, conversion rate (CVR) is widely used for traffic allocation, but it fails to fully reflect recommendation effectiveness because it ignores refund behavior. To better capture true user satisfaction and…

机器学习 · 计算机科学 2026-01-30 Mingxuan Luo , Guipeng Xv , Sishuo Chen , Xinyu Li , Li Zhang , Zhangming Chan , Xiang-Rong Sheng , Han Zhu , Jian Xu , Bo Zheng , Chen Lin

The Variational Bayesian method (VB) is used to solve the probability distributions of latent variables with the minimum free energy criterion. This criterion is not easy to understand, and the computation is complex. For these reasons,…

机器学习 · 计算机科学 2026-05-01 Chenguang Lu

In the medical field, managing high-dimensional massive medical imaging data and performing reliable medical analysis from it is a critical challenge, especially in resource-limited environments such as remote medical facilities and mobile…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Yuxin Hong , Xiao Zhang , Xin Zhang , Joey Tianyi Zhou

With the advancements of computer architectures, the use of computational models proliferates to solve complex problems in many scientific applications such as nuclear physics and climate research. However, the potential of such models is…

统计计算 · 统计学 2021-07-05 Vojtech Kejzlar , Tapabrata Maiti

Cross-Domain Recommendation (CDR) have received widespread attention due to their ability to utilize rich information across domains. However, most existing CDR methods assume an ideal static condition that is not practical in industrial…

信息检索 · 计算机科学 2024-10-16 Heyuan Huang , Xingyu Lou , Chaochao Chen , Pengxiang Cheng , Yue Xin , Chengwei He , Xiang Liu , Jun Wang

Deep reinforcement learning (RL) algorithms suffer severe performance degradation when the interaction data is scarce, which limits their real-world application. Recently, visual representation learning has been shown to be effective and…

机器学习 · 计算机科学 2022-08-17 Yang Yue , Bingyi Kang , Zhongwen Xu , Gao Huang , Shuicheng Yan

Cross-validation (CV) is a technique used to estimate generalization error for prediction models. For pipeline modeling algorithms (i.e. modeling procedures with multiple steps), it has been recommended the entire sequence of steps be…

机器学习 · 统计学 2020-10-05 Byron C. Jaeger , Nicholas J. Tierney , Noah R. Simon

The novel unseen classes can be formulated as the extreme values of known classes. This inspired the recent works on open-set recognition \cite{Scheirer_2013_TPAMI,Scheirer_2014_TPAMIb,EVM}, which however can have no way of naming the novel…

计算机视觉与模式识别 · 计算机科学 2018-01-30 Yanwei Fu , HanZe Dong , Yu-feng Ma , Zhengjun Zhang , Xiangyang Xue

We present Sequential Neural Variational Inference (SNVI), an approach to perform Bayesian inference in models with intractable likelihoods. SNVI combines likelihood-estimation (or likelihood-ratio-estimation) with variational inference to…

机器学习 · 统计学 2022-10-20 Manuel Glöckler , Michael Deistler , Jakob H. Macke

With the advent of media streaming, video action recognition has become progressively important for various applications, yet at the high expense of requiring large-scale data labelling. To overcome the problem of expensive data labelling,…

计算机视觉与模式识别 · 计算机科学 2021-10-18 Zhuoxiao Chen , Yadan Luo , Mahsa Baktashmotlagh

We present variational inference with sequential sample-average approximation (VISA), a method for approximate inference in computationally intensive models, such as those based on numerical simulations. VISA extends importance-weighted…

机器学习 · 统计学 2024-03-18 Heiko Zimmermann , Christian A. Naesseth , Jan-Willem van de Meent

This work aims efficiently estimating the posterior distribution of kinetic parameters for dynamic positron emission tomography (PET) imaging given a measurement of time of activity curve. Considering the inherent information loss from…

医学物理 · 物理学 2023-10-25 Xiaofeng Liu , Thibault Marin , Tiss Amal , Jonghye Woo , Georges El Fakhri , Jinsong Ouyang

Empowered by expressive function approximators such as neural networks, deep reinforcement learning (DRL) achieves tremendous empirical successes. However, learning expressive function approximators requires collecting a large dataset…

机器学习 · 计算机科学 2020-06-23 Lingxiao Wang , Zhuoran Yang , Zhaoran Wang

First, we analyze the variance of the Cross Validation (CV)-based estimators used for estimating the performance of classification rules. Second, we propose a novel estimator to estimate this variance using the Influence Function (IF)…

机器学习 · 统计学 2021-11-10 Waleed A. Yousef

Computing value of information (VOI) is a crucial task in various aspects of decision-making under uncertainty, such as in meta-reasoning for search; in selecting measurements to make, prior to choosing a course of action; and in managing…

人工智能 · 计算机科学 2015-03-13 David Tolpin , Solomon Eyal Shimony

Sales promotions, as short-term incentives to stimulate product purchases, play a pivotal role in modern e-commerce marketing strategies. During promotional events, user behavior patterns exhibit distinct characteristics compared to regular…

信息检索 · 计算机科学 2026-05-12 Xin Song , Kaiyuan Li , Jinxin Hu