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Maximum likelihood or restricted maximum likelihood (REML) estimates of the parameters in linear mixed-effects models can be determined using the lmer function in the lme4 package for R. As for most model-fitting functions in R, the model…

Computation · Statistics 2014-06-24 Douglas Bates , Martin Mächler , Ben Bolker , Steve Walker

The goal of the linear law-based feature space transformation (LLT) algorithm is to assist with the classification of univariate and multivariate time series. The presented R package, called LLT, implements this algorithm in a flexible yet…

Machine Learning · Computer Science 2026-02-06 Marcell T. Kurbucz , Péter Pósfay , Antal Jakovác

Recent years witness the tremendous success of generative adversarial networks (GANs) in synthesizing photo-realistic images. GAN generator learns to compose realistic images and reproduce the real data distribution. Through that, a…

Computer Vision and Pattern Recognition · Computer Science 2023-01-16 Yinghao Xu , Yujun Shen , Jiapeng Zhu , Ceyuan Yang , Bolei Zhou

Generative models for 3D molecular conformations must respect Euclidean symmetries and concentrate probability mass on thermodynamically favorable, mechanically stable structures. However, E(3)-equivariant diffusion models often reproduce…

Machine Learning · Computer Science 2026-01-30 Yunyang Li , Lin Huang , Luojia Xia , Wenhe Zhang , Mark Gerstein

To understand how genetic variants in human genomes manifest in phenotypes -- traits like height or diseases like asthma -- geneticists have sequenced and measured hundreds of thousands of individuals. Geneticists use this data to build…

Machine Learning · Computer Science 2025-07-01 Alan N. Amin , Andres Potapczynski , Andrew Gordon Wilson

We have developed a new software tool, Lensview, for modelling resolved gravitational lens images. Based on the LensMEM algorithm, the software finds the best fitting lens mass model and source brightness distribution using a maximum…

Astrophysics · Physics 2009-11-11 Randall B. Wayth , Rachel L. Webster

Generative Adversarial Imitation Learning (GAIL) is a powerful and practical approach for learning sequential decision-making policies. Different from Reinforcement Learning (RL), GAIL takes advantage of demonstration data by experts (e.g.,…

Machine Learning · Computer Science 2020-01-14 Minshuo Chen , Yizhou Wang , Tianyi Liu , Zhuoran Yang , Xingguo Li , Zhaoran Wang , Tuo Zhao

Reinforcement learning (RL) has improved guided image generation with diffusion models by directly optimizing rewards that capture image quality, aesthetics, and instruction following capabilities. However, the resulting generative policies…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Owen Oertell , Jonathan D. Chang , Yiyi Zhang , Kianté Brantley , Wen Sun

The evolution of Diffusion Models has dramatically improved image generation quality, making it increasingly difficult to differentiate between real and generated images. This development, while impressive, also raises significant privacy…

Computer Vision and Pattern Recognition · Computer Science 2025-02-24 Yunpeng Luo , Junlong Du , Ke Yan , Shouhong Ding

Facial attribute editing and style manipulation are crucial for applications like virtual avatars and photo editing. However, achieving precise control over facial attributes without altering unrelated features is challenging due to the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Wenmin Huang , Weiqi Luo , Xiaochun Cao , Jiwu Huang

We present Gen3R, a method that bridges the strong priors of foundational reconstruction models and video diffusion models for scene-level 3D generation. We repurpose the VGGT reconstruction model to produce geometric latents by training an…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Jiaxin Huang , Yuanbo Yang , Bangbang Yang , Lin Ma , Yuewen Ma , Yiyi Liao

While latent diffusion models (LDMs), such as Stable Diffusion, are designed for high-resolution (HR) image generation, they often struggle with significant structural distortions when generating images at resolutions higher than their…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Boyuan Cao , Jiaxin Ye , Yujie Wei , Hongming Shan

Predicting the future trajectory of complex and rapidly evolving systems remains a significant challenge, particularly in domains where data is scarce or unreliable. This study introduces a novel approach to qualitative forecasting by…

Artificial Intelligence · Computer Science 2025-03-03 Francesco Bertolotti , Luca Mari

The rise of generative models has raised concerns about image authenticity online, highlighting the urgent need for a detector that is (1) highly generalizable, capable of handling unseen forgery techniques, and (2) data-efficient,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Yingjian Chen , Lei Zhang , Yakun Niu

In this paper, we develop a multivariate evolutionary generalised linear model (GLM) framework for claims reserving, which allows for dynamic features of claims activity in conjunction with dependency across business lines to accurately…

Risk Management · Quantitative Finance 2020-09-10 Benjamin Avanzi , Gregory Clive Taylor , Phuong Anh Vu , Bernard Wong

Recent advances in diffusion models have positioned them as powerful generative frameworks for speech synthesis, demonstrating substantial improvements in audio quality and stability. Nevertheless, their effectiveness in vocoders…

Sound · Computer Science 2025-12-01 Teysir Baoueb , Xiaoyu Bie , Mathieu Fontaine , Gaël Richard

Large Language Models (LLMs) have consistently showcased remarkable generalization capabilities when applied to various language tasks. Nonetheless, harnessing the full potential of LLMs for Radiology Report Generation (R2Gen) still…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Zhanyu Wang , Lingqiao Liu , Lei Wang , Luping Zhou

Many scientific problems focus on observed patterns of change or on how to design a system to achieve particular dynamics. Those problems often require fitting differential equation models to target trajectories. Fitting such models can be…

Quantitative Methods · Quantitative Biology 2023-12-27 Steven A. Frank

Convolutional dictionary learning (CDL) estimates shift invariant basis adapted to multidimensional data. CDL has proven useful for image denoising or inpainting, as well as for pattern discovery on multivariate signals. As estimated…

Machine Learning · Computer Science 2019-01-29 Thomas Moreau , Alexandre Gramfort

Latent diffusion models (LDM) have revolutionized text-to-image generation, leading to the proliferation of various advanced models and diverse downstream applications. However, despite these significant advancements, current diffusion…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Jiacheng Zhang , Jie Wu , Yuxi Ren , Xin Xia , Huafeng Kuang , Pan Xie , Jiashi Li , Xuefeng Xiao , Weilin Huang , Shilei Wen , Lean Fu , Guanbin Li