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Standard first-order stochastic optimization algorithms base their updates solely on the average mini-batch gradient, and it has been shown that tracking additional quantities such as the curvature can help de-sensitize common…

机器学习 · 计算机科学 2020-11-11 Ricky T. Q. Chen , Dami Choi , Lukas Balles , David Duvenaud , Philipp Hennig

Training large language models (LLMs) poses challenges due to their massive scale and heterogeneous architectures. While adaptive optimizers like AdamW help address gradient variations, they still struggle with efficient and effective…

机器学习 · 计算机科学 2025-06-03 Siyuan Li , Juanxi Tian , Zedong Wang , Xin Jin , Zicheng Liu , Wentao Zhang , Dan Xu

The fine-tuning of pre-trained models has become ubiquitous in generative AI, computer vision, and robotics. Although much attention has been paid to improving the efficiency of fine-tuning model, there has been less scholarship around…

计算机视觉与模式识别 · 计算机科学 2025-11-03 Anirudh S Chakravarthy , Shuai Kyle Zheng , Xin Huang , Sachithra Hemachandra , Xiao Zhang , Yuning Chai , Zhao Chen

We consider decentralized machine learning over a network where the training data is distributed across $n$ agents, each of which can compute stochastic model updates on their local data. The agent's common goal is to find a model that…

分布式、并行与集群计算 · 计算机科学 2022-02-09 Anastasia Koloskova , Tao Lin , Sebastian U. Stich

Recent advances in diffusion models have led to impressive image generation capabilities, but aligning these models with human preferences remains challenging. Reward-based fine-tuning using models trained on human feedback improves…

计算机视觉与模式识别 · 计算机科学 2025-05-29 Dmitrii Sorokin , Maksim Nakhodnov , Andrey Kuznetsov , Aibek Alanov

Artificial intelligence (AI) and machine learning (ML) have become vital to remain competitive for financial services companies around the globe. The two models currently competing for the pole position in credit risk management are deep…

机器学习 · 计算机科学 2022-05-24 Marc Schmitt

Adaptive gradient methods like Adagrad and its variants are widespread in large-scale optimization. However, their use of diagonal preconditioning matrices limits the ability to capture parameter correlations. Full-matrix adaptive methods,…

机器学习 · 计算机科学 2025-09-01 Tatyana Matveeva , Aleksandr Katrutsa , Evgeny Frolov

This paper studies a class of distributed optimization problems with coupled equality constraints in networked systems. Many existing distributed algorithms rely on solving local subproblems via the $\operatorname{argmin}$ operator in each…

最优化与控制 · 数学 2025-11-26 Chenyang Qiu , Zongli Lin

Before a car-following model can be applied in practice, it must first be validated against real data in a process known as calibration. This paper discusses the formulation of calibration as an optimization problem, and compares different…

系统与控制 · 电气工程与系统科学 2024-12-20 Ronan Keane , H. Oliver Gao

This work introduces TrimTuner, the first system for optimizing machine learning jobs in the cloud to exploit sub-sampling techniques to reduce the cost of the optimization process while keeping into account user-specified constraints.…

机器学习 · 计算机科学 2020-11-11 Pedro Mendes , Maria Casimiro , Paolo Romano , David Garlan

Deep neural networks have seen great success in recent years; however, training a deep model is often challenging as its performance heavily depends on the hyper-parameters used. In addition, finding the optimal hyper-parameter…

Diffusion model alignment aims to bridge the gap between generated outputs and human preferences by enhancing both semantic consistency with textual prompts and overall visual quality. Existing alignment methods face a challenging…

计算机视觉与模式识别 · 计算机科学 2026-04-01 Xin Xie , Jiaxian Guo , Dong Gong

Deep Neural Networks and Reinforcement Learning methods have empirically shown great promise in tackling challenging combinatorial problems. In those methods a deep neural network is used as a solution generator which is then trained by…

机器学习 · 计算机科学 2023-11-08 Constantine Caramanis , Dimitris Fotakis , Alkis Kalavasis , Vasilis Kontonis , Christos Tzamos

Recent advances in foundation models have emphasized the need to align pre-trained models with specialized domains using small, curated datasets. Studies on these foundation models underscore the importance of low-data training and…

机器学习 · 计算机科学 2024-10-17 Zihang Liu , Yuanzhe Hu , Tianyu Pang , Yefan Zhou , Pu Ren , Yaoqing Yang

We present a global optimizer, based on a conditional generative neural network, which can output ensembles of highly efficient topology-optimized metasurfaces operating across a range of parameters. A key feature of the network is that it…

机器学习 · 计算机科学 2019-07-18 Jiaqi Jiang , Jonathan A. Fan

AutoML serves as the bridge between varying levels of expertise when designing machine learning systems and expedites the data science process. A wide range of techniques is taken to address this, however there does not exist an objective…

机器学习 · 计算机科学 2018-08-21 Adithya Balaji , Alexander Allen

Fine-tuning Large Language Models (LLMs) has become essential for domain adaptation, but its memory-intensive property exceeds the capabilities of most GPUs. To address this challenge and democratize LLM fine-tuning, we present SlideFormer,…

分布式、并行与集群计算 · 计算机科学 2026-03-18 Ruijia Yang , Zeyi Wen

With the development of deep learning, Deep Metric Learning (DML) has achieved great improvements in face recognition. Specifically, the widely used softmax loss in the training process often bring large intra-class variations, and feature…

计算机视觉与模式识别 · 计算机科学 2018-05-02 Bowen Wu , Huaming Wu , Monica M. Y. Zhang

This paper presents a novel optimization method for maximizing generalization over tasks in meta-learning. The goal of meta-learning is to learn a model for an agent adapting rapidly when presented with previously unseen tasks. Tasks are…

机器学习 · 计算机科学 2018-10-19 Amir Erfan Eshratifar , David Eigen , Massoud Pedram

In decentralized optimization, the choice of stepsize plays a critical role in algorithm performance. A common approach is to use a shared stepsize across all agents to ensure convergence. However, selecting an optimal stepsize often…

最优化与控制 · 数学 2026-01-07 Diyako Ghaderyan , Stefan Werner