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Contextual optimization enhances decision quality by leveraging side information to improve predictions of uncertain parameters. However, existing approaches face significant challenges when dealing with multimodal or mixtures of…

最优化与控制 · 数学 2025-09-19 YoungChul Yoon , Grani A. Hanasusanto , Yijie Wang

Deep learning, particularly the generative model, has demonstrated tremendous potential to significantly speed up image reconstruction with reduced measurements recently. Rather than the existing generative models that often optimize the…

图像与视频处理 · 电气工程与系统科学 2021-02-02 Cong Quan , Jinjie Zhou , Yuanzheng Zhu , Yang Chen , Shanshan Wang , Dong Liang , Qiegen Liu

There is a trend to acquire high accuracy land-cover maps using multi-source classification methods, most of which are based on data fusion, especially pixel- or feature-level fusions. A probabilistic graphical model (PGM) approach is…

应用统计 · 统计学 2016-12-13 Jie Wang , Luyan Ji , Xiaomeng Huang , Haohuan Fu , Shiming Xu , Congcong Li

Multimodal large language models (MLLMs) extend the success of language models to visual understanding, and recent efforts have sought to build unified MLLMs that support both understanding and generation. However, constructing such models…

计算机视觉与模式识别 · 计算机科学 2025-10-03 Hanyu Wang , Jiaming Han , Ziyan Yang , Qi Zhao , Shanchuan Lin , Xiangyu Yue , Abhinav Shrivastava , Zhenheng Yang , Hao Chen

In this paper, we propose \textbf{UniCode}, a novel approach within the domain of multimodal large language models (MLLMs) that learns a unified codebook to efficiently tokenize visual, text, and potentially other types of signals. This…

计算机视觉与模式识别 · 计算机科学 2024-03-15 Sipeng Zheng , Bohan Zhou , Yicheng Feng , Ye Wang , Zongqing Lu

Removing the shape noise from the observed weak lensing field, i.e., denoising, enhances the potential of WL by accessing information at small scales where the shape noise dominates without denoising. We utilise two machine learning (ML)…

宇宙学与河外天体物理 · 物理学 2026-05-13 Shohei D. Aoyama , Ken Osato , Masato Shirasaki

Data augmentation is widely used to enhance generalization in visual classification tasks. However, traditional methods struggle when source and target domains differ, as in domain adaptation, due to their inability to address domain gaps.…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Khawar Islam , Muhammad Zaigham Zaheer , Arif Mahmood , Karthik Nandakumar , Naveed Akhtar

In this paper we consider maximum-likelihood (ML) MIMO detection under one-bit quantized observations and binary symbol constellations. This problem is motivated by the recent interest in adopting coarse quantization in massive MIMO…

信息论 · 计算机科学 2021-02-24 Mingjie Shao , Wing-Kin Ma

Gradient-boosted decision trees (GBDT) are widely used and highly effective machine learning approach for tabular data modeling. However, their complex structure may lead to low robustness against small covariate perturbation in unseen…

机器学习 · 统计学 2023-05-12 Shijie Cui , Agus Sudjianto , Aijun Zhang , Runze Li

Large Language Models (LLMs), particularly Code LLMs, have demonstrated impressive performance in code generation. Current research primarily focuses on the correctness of generated code, while efficiency remains less explored. Recent works…

软件工程 · 计算机科学 2025-02-27 Tong Ye , Weigang Huang , Xuhong Zhang , Tengfei Ma , Peiyu Liu , Jianwei Yin , Wenhai Wang

Weak gravitational lensing maps compactly encode the evolution of cosmic large-scale structure and are a key tool for cosmological analyses. Performing inference directly at the map level allows flexible choices of statistics and can…

宇宙学与河外天体物理 · 物理学 2026-05-25 Guangjian Li , Tomasz Kacprzak

Traditional Linear Genetic Programming (LGP) algorithms are based only on the selection mechanism to guide the search. Genetic operators combine or mutate random portions of the individuals, without knowing if the result will lead to a…

神经与进化计算 · 计算机科学 2017-04-05 Léo Françoso Dal Piccol Sotto , Vinícius Veloso de Melo

Discrete Diffusion Language Models progressed rapidly as an alternative to autoregressive (AR) models, motivated by their parallel generation abilities. However, for tractability, discrete diffusion models sample from a factorized…

机器学习 · 计算机科学 2026-05-19 Justin Deschenaux , Caglar Gulcehre

The application of visual instruction tuning and other post-training techniques has significantly enhanced the capabilities of Large Language Models (LLMs) in visual understanding, enriching Vision-Language Models (VLMs) with more…

计算机视觉与模式识别 · 计算机科学 2025-06-11 Mingjie Xu , Andrew Estornell , Hongzheng Yang , Yuzhi Zhao , Zhaowei Zhu , Qi Xuan , Jiaheng Wei

Auto-regressive sequence generative models trained by Maximum Likelihood Estimation suffer the exposure bias problem in practical finite sample scenarios. The crux is that the number of training samples for Maximum Likelihood Estimation is…

机器学习 · 统计学 2020-07-14 Yuxuan Song , Ning Miao , Hao Zhou , Lantao Yu , Mingxuan Wang , Lei Li

Several interesting generative learning algorithms involve a complex probability distribution over many random variables, involving intractable normalization constants or latent variable normalization. Some of them may even not have an…

机器学习 · 计算机科学 2014-05-13 Yoshua Bengio , Li Yao , Kyunghyun Cho

We introduce a simple, accurate, and extremely efficient method for numerically solving the multi-marginal optimal transport (MMOT) problems arising in density functional theory. The method relies on (i) the sparsity of optimal plans [for…

机器学习 · 计算机科学 2021-03-24 Gero Friesecke , Andreas S. Schulz , Daniela Vögler

High-performance learned image compression codecs require flexible probability models to fit latent representations. Gaussian Mixture Models (GMMs) were proposed to satisfy this demand, but suffer from a significant runtime performance…

图像与视频处理 · 电气工程与系统科学 2025-09-24 Shimon Murai , Fangzheng Lin , Jiro Katto

Generative Adversarial Networks have surprising ability for generating sharp and realistic images, though they are known to suffer from the so-called mode collapse problem. In this paper, we propose a new GAN variant called Mixture Density…

机器学习 · 计算机科学 2018-11-30 Hamid Eghbal-zadeh , Werner Zellinger , Gerhard Widmer

Seismic imaging from sparsely acquired data faces challenges such as low image quality, discontinuities, and migration swing artifacts. Existing convolutional neural network (CNN)-based methods struggle with complex feature distributions…

地球物理 · 物理学 2024-08-01 Xingchen Shi , Shijun Cheng , Weijian Mao , Wei Ouyang