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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…

Conventional diffusion models typically relies on a fixed forward process, which implicitly defines complex marginal distributions over latent variables. This can often complicate the reverse process' task in learning generative…

机器学习 · 统计学 2025-06-10 Grigory Bartosh , Dmitry Vetrov , Christian A. Naesseth

Due to inappropriate sample selection and limited training data, a distribution shift often exists between the training and test sets. This shift can adversely affect the test performance of Graph Neural Networks (GNNs). Existing approaches…

机器学习 · 计算机科学 2023-10-16 Rui Ding , Jielong Yang , Feng Ji , Xionghu Zhong , Linbo Xie

Accelerated magnetic resonance (MR) imaging attempts to reduce acquisition time by collecting data below the Nyquist rate. As an ill-posed inverse problem, many plausible solutions exist, yet the majority of deep learning approaches…

图像与视频处理 · 电气工程与系统科学 2023-06-05 Jeffrey Wen , Rizwan Ahmad , Philip Schniter

Recurrent neural networks with a gating mechanism such as an LSTM or GRU are powerful tools to model sequential data. In the mechanism, a forget gate, which was introduced to control information flow in a hidden state in the RNN, has…

机器学习 · 统计学 2021-11-08 Kentaro Ohno , Atsutoshi Kumagai

Semantic segmentation has recently witnessed major progress, where fully convolutional neural networks have shown to perform well. However, most of the previous work focused on improving single image segmentation. To our knowledge, no prior…

计算机视觉与模式识别 · 计算机科学 2016-11-23 Mennatullah Siam , Sepehr Valipour , Martin Jagersand , Nilanjan Ray

Fluorescence lifetime imaging (FLI) has been receiving increased attention in recent years as a powerful diagnostic technique in biological and medical research. However, existing FLI systems often suffer from a tradeoff between processing…

图像与视频处理 · 电气工程与系统科学 2025-11-10 Yang Lin , Paul Mos , Andrei Ardelean , Claudio Bruschini , Edoardo Charbon

Synthesizing diverse, uncertainty-aware grasps for multi-fingered hands from partial observations remains a critical challenge in robot learning. Prior generative methods struggle to model the intricate grasp distribution of dexterous hands…

机器人学 · 计算机科学 2025-09-05 Qian Feng , Jianxiang Feng , Zhaopeng Chen , Rudolph Triebel , Alois Knoll

Using a natural language sentence to describe the content of an image is a challenging but very important task. It is challenging because a description must not only capture objects contained in the image and the relationships among them,…

计算机视觉与模式识别 · 计算机科学 2019-04-23 Xuelong Li , Aihong Yuan , Xiaoqiang Lu

Transformer-based models have gained significant traction in sequential recommender systems (SRSs) for their ability to capture user-item interactions effectively. However, these models often suffer from high computational costs and slow…

信息检索 · 计算机科学 2025-04-15 Sheng Zhang , Maolin Wang , Wanyu Wang , Jingtong Gao , Xiangyu Zhao , Yu Yang , Xuetao Wei , Zitao Liu , Tong Xu

This paper presents normalizing flows for incremental smoothing and mapping (NF-iSAM), a novel algorithm for inferring the full posterior distribution in SLAM problems with nonlinear measurement models and non-Gaussian factors. NF-iSAM…

机器人学 · 计算机科学 2022-07-05 Qiangqiang Huang , Can Pu , Kasra Khosoussi , David M. Rosen , Dehann Fourie , Jonathan P. How , John J. Leonard

We leverage physics-embedded differentiable graph network simulators (GNS) to accelerate particulate and fluid simulations to solve forward and inverse problems. GNS represents the domain as a graph with particles as nodes and learned…

地球物理 · 物理学 2023-09-26 Krishna Kumar , Yongjin Choi

Accurate short-term streamflow and flood forecasting are critical for mitigating river flood impacts, especially given the increasing climate variability. Machine learning-based streamflow forecasting relies on large streamflow datasets…

人工智能 · 计算机科学 2024-12-09 Xiyu Pan , Neda Mohammadi , John E. Taylor

The probability prediction of multivariate time series is a notoriously challenging but practical task. On the one hand, the challenge is how to effectively capture the cross-series correlations between interacting time series, to achieve…

机器学习 · 计算机科学 2023-07-24 Shibo Feng , Chunyan Miao , Ke Xu , Jiaxiang Wu , Pengcheng Wu , Yang Zhang , Peilin Zhao

Trajectory prediction of aerial vehicles is a key requirement in applications ranging from missile guidance to UAV collision avoidance. While most prediction methods assume deterministic target motion, real-world targets often exhibit…

机器人学 · 计算机科学 2025-12-19 Marc Schneider , Renato Loureiro , Torbjørn Cunis , Walter Fichter

Scene flow, which provides the 3D motion field of the first frame from two consecutive point clouds, is vital for dynamic scene perception. However, contemporary scene flow methods face three major challenges. Firstly, they lack global flow…

计算机视觉与模式识别 · 计算机科学 2024-08-16 Zhiyang Lu , Qinghan Chen , Zhimin Yuan , Ming Cheng

To overcome topological constraints and improve the expressiveness of normalizing flow architectures, Wu, K\"ohler and No\'e introduced stochastic normalizing flows which combine deterministic, learnable flow transformations with stochastic…

机器学习 · 计算机科学 2022-12-02 Paul Hagemann , Johannes Hertrich , Gabriele Steidl

Many real-world ubiquitous applications, such as parking recommendations and air pollution monitoring, benefit significantly from accurate long-term spatio-temporal forecasting (LSTF). LSTF makes use of long-term dependency between spatial…

机器学习 · 计算机科学 2022-09-02 Wei Shao , Zhiling Jin , Shuo Wang , Yufan Kang , Xiao Xiao , Hamid Menouar , Zhaofeng Zhang , Junshan Zhang , Flora Salim

Recent progress in style transfer on images has focused on improving the quality of stylized images and speed of methods. However, real-time methods are highly unstable resulting in visible flickering when applied to videos. In this work we…

计算机视觉与模式识别 · 计算机科学 2017-05-08 Agrim Gupta , Justin Johnson , Alexandre Alahi , Li Fei-Fei

In this study, we develop a unified volatility modeling framework that embeds GARCH dynamics directly within recurrent neural networks. We propose two interpretable hybrid architectures, GARCH-GRU and GARCH-LSTM, that integrate the…

统计金融 · 定量金融 2025-11-25 Jingyi Wei , Steve Yang , Zhenyu Cui