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Missing data is a ubiquitous problem. It is especially challenging in medical settings because many streams of measurements are collected at different - and often irregular - times. Accurate estimation of those missing measurements is…

机器学习 · 计算机科学 2017-11-27 Jinsung Yoon , William R. Zame , Mihaela van der Schaar

Any search or sampling algorithm for solution of inverse problems needs guidance to be efficient. Many algorithms collect and apply information about the problem on the fly, and much improvement has been made in this way. However, as a…

地球物理 · 物理学 2021-05-19 Sarouyeh Khoshkholgh , Andrea Zunino , Klaus Mosegaard

Tuning of measurement models is challenging in real-world applications of sequential Monte Carlo methods. Recent advances in differentiable particle filters have led to various efforts to learn measurement models through neural networks.…

人工智能 · 计算机科学 2022-03-17 Xiongjie Chen , Yunpeng Li

One-step generative modeling seeks to generate high-quality data samples in a single function evaluation, significantly improving efficiency over traditional diffusion or flow-based models. In this work, we introduce Modular MeanFlow (MMF),…

机器学习 · 计算机科学 2025-08-26 Haochen You , Baojing Liu , Hongyang He

Training machine learning models requires feeding input data for models to ingest. Input pipelines for machine learning jobs are often challenging to implement efficiently as they require reading large volumes of data, applying complex…

机器学习 · 计算机科学 2021-02-25 Derek G. Murray , Jiri Simsa , Ana Klimovic , Ihor Indyk

We present a framework to use recently introduced Capsule Networks for solving the problem of Optical Flow, one of the fundamental computer vision tasks. Most of the existing state of the art deep architectures either uses a correlation…

计算机视觉与模式识别 · 计算机科学 2023-12-05 Rahul Chand , Rajat Arora , K Ram Prabhakar , R Venkatesh Babu

Flow models are effective at progressively generating realistic images, but they generally struggle to capture long-range dependencies during the generation process as they compress all the information from previous time steps into a single…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Mude Hui , Rui-Jie Zhu , Songlin Yang , Yu Zhang , Zirui Wang , Yuyin Zhou , Jason Eshraghian , Cihang Xie

The high demand for computer science education has led to high enrollments, with thousands of students in many introductory courses. In such large courses, it can be overwhelmingly difficult for instructors to understand class-wide…

人机交互 · 计算机科学 2024-04-17 Ashley Ge Zhang , Xiaohang Tang , Steve Oney , Yan Chen

Fluid data completion is a research problem with high potential benefit for both experimental and computational fluid dynamics. An effective fluid data completion method reduces the required number of sensors in a fluid dynamics experiment,…

机器学习 · 计算机科学 2024-02-28 Dule Shu , Wilson Zhen , Zijie Li , Amir Barati Farimani

Multimodal Federated Learning (MMFL) enables privacy-preserving collaborative training, but real-world clinical applications often suffer from within-modality missingness caused by sensor intermittency or irregular sampling. Existing…

机器学习 · 计算机科学 2026-04-28 Wugeng Zheng , Ziwen Kan , Katie Wang , Chen Chen , Song Wang

Existing rectified flow models are based on linear trajectories between data and noise distributions. This linearity enforces zero curvature, which can inadvertently force the image generation process through low-probability regions of the…

计算机视觉与模式识别 · 计算机科学 2025-08-26 Yan Luo , Drake Du , Hao Huang , Yi Fang , Mengyu Wang

As one of the most fundamental models, meta learning aims to effectively address few-shot learning challenges. However, it still faces significant issues related to the training data, such as training inefficiencies due to numerous…

机器学习 · 计算机科学 2025-01-28 Chenyang Ren , Huanyi Xie , Shu Yang , Meng Ding , Lijie Hu , Di Wang

Large language model (LLM) agents frequently fail on multi-step tasks involving reasoning, tool use, and environment interaction. While such failures are typically logged or retried heuristically, they contain structured signals about where…

机器学习 · 计算机科学 2026-05-26 Akash Bonagiri , Devang Borkar , Gerard Janno Anderias , Setareh Rafatirad , Houman Homayoun

Controlling generative models is computationally expensive. This is because optimal alignment with a reward function--whether via inference-time steering or fine-tuning--requires estimating the value function. This task demands access to…

We propose a novel Monte-Carlo based ab-initio algorithm for directly computing the statistics for quantities of interest in an immiscible two-phase compressible flow. Our algorithm samples the underlying probability space and evolves these…

数值分析 · 数学 2023-03-30 Marco Petrella , Remi Abgrall , Siddhartha Mishra

Data for which a set of objects is described by multiple distinct feature sets (called views) is known as multi-view data. When missing values occur in multi-view data, all features in a view are likely to be missing simultaneously. This…

Missing data in online reinforcement learning (RL) poses challenges compared to missing data in standard tabular data or in offline policy learning. The need to impute and act at each time step means that imputation cannot be put off until…

机器学习 · 统计学 2025-10-14 Kyla Chasalow , Skyler Wu , Susan Murphy

Missing value imputation in machine learning is the task of estimating the missing values in the dataset accurately using available information. In this task, several deep generative modeling methods have been proposed and demonstrated…

机器学习 · 计算机科学 2023-03-14 Shuhan Zheng , Nontawat Charoenphakdee

We introduce ContinualFlow, a principled framework for targeted unlearning in generative models via Flow Matching. Our method leverages an energy-based reweighting loss to softly subtract undesired regions of the data distribution without…

机器学习 · 计算机科学 2025-06-24 Lorenzo Simone , Davide Bacciu , Shuangge Ma

6D object pose estimation is crucial for robotic perception and precise manipulation. Occlusion and incomplete object visibility are common challenges in this task, but existing pose refinement methods often struggle to handle these issues…

计算机视觉与模式识别 · 计算机科学 2024-11-27 Xin Liu , Shibei Xue , Dezong Zhao , Shan Ma , Min Jiang