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A recent nature inspired optimization algorithm, Fish School Search (FSS) is applied to the finite element model (FEM) updating problem. This method is tested on a GARTEUR SM-AG19 aeroplane structure. The results of this algorithm are…

计算工程、金融与科学 · 计算机科学 2013-08-13 I. Boulkabeit , L. Mthembu , T. Marwala , F. De Lima Neto

Fine-tuning Multimodal Large Language Models (MLLMs) with parameter-efficient methods like Low-Rank Adaptation (LoRA) is crucial for task adaptation. However, imbalanced training dynamics across modalities often lead to suboptimal accuracy…

机器学习 · 计算机科学 2026-03-03 Minkyoung Cho , Insu Jang , Shuowei Jin , Zesen Zhao , Adityan Jothi , Ethem F. Can , Min-Hung Chen , Z. Morley Mao

Beam alignment (BA) is to ensure the transmitter and receiver beams are accurately aligned to establish a reliable communication link in millimeter-wave (mmwave) systems. Existing BA methods search the entire beam space to identify the…

信号处理 · 电气工程与系统科学 2019-09-10 Wen Wu , Nan Cheng , Ning Zhang , Peng Yang , Weihua Zhuang , Xuemin , Shen

This paper addresses the challenge of co-channel interference and intentional jamming in low-altitude air-ground communications. Since conventional fixed-position antenna (FPA) systems lack spatial adaptability to dynamically balance signal…

信号处理 · 电气工程与系统科学 2025-09-03 Yifan Guo , Junshan Luo , Fanggang Wang , Haiyang Ding , Shilian Wang , Zhenhai Xu

Large Language Models (LLMs) have shown impressive performance as general purpose agents, but their abilities remain highly dependent on prompts which are hand written with onerous trial-and-error effort. We propose a simple and…

计算与语言 · 计算机科学 2023-10-20 Reid Pryzant , Dan Iter , Jerry Li , Yin Tat Lee , Chenguang Zhu , Michael Zeng

Bat algorithm (BA) is a recent optimization algorithm based on swarm intelligence and inspiration from the echolocation behavior of bats. One of the issues in the standard bat algorithm is the premature convergence that can occur due to the…

神经与进化计算 · 计算机科学 2018-05-16 Asma Chakri , Rabia Khelif , Mohamed Benouaret , Xin-She Yang

Test-time policy adaptation for multi-turn interactions (T2PAM) is essential for aligning Large Language Models (LLMs) with dynamic user needs during inference time. However, existing paradigms commonly treat test-time adaptation as a…

人工智能 · 计算机科学 2026-03-03 Chenxing Wei , Hong Wang , Ying He , Zhongxiang Dai , Bo Jiang , F. Richard Yu , Yao Shu

Establishing a reliable and iteratively refined robotic system is essential for deploying real-world applications. While Vision-Language-Action (VLA) models are widely recognized as the foundation model for such robotic deployment, their…

机器人学 · 计算机科学 2025-10-31 Wenke Xia , Yichu Yang , Hongtao Wu , Xiao Ma , Tao Kong , Di Hu

Large-scale LiDAR Bundle Adjustment (LBA) to refine sensor orientation and point cloud accuracy simultaneously to build the navigation map is a fundamental task in logistics and robotics. Unlike pose-graph-based methods that rely solely on…

机器人学 · 计算机科学 2025-01-24 Jianping Li , Thien-Minh Nguyen , Muqing Cao , Shenghai Yuan , Tzu-Yi Hung , Lihua Xie

Movable antenna (MA) is a promising technology for improving the performance of wireless communication systems by providing new degrees-of-freedom (DoFs) in antenna position optimization. However, existing works on MA systems have mostly…

信号处理 · 电气工程与系统科学 2025-11-20 Liujia Yao , Changsheng You , Chao Zhou , Beixiong Zheng , Weidong Mei

Factor Analysis has traditionally been utilized across diverse disciplines to extrapolate latent traits that influence the behavior of multivariate observed variables. Historically, the focus has been on analyzing data from a single study,…

统计方法学 · 统计学 2026-01-22 Elena Bortolato , Antonio Canale

We present Amos, a stochastic gradient-based optimizer designed for training deep neural networks. It can be viewed as an Adam optimizer with theoretically supported, adaptive learning-rate decay and weight decay. A key insight behind Amos…

机器学习 · 计算机科学 2022-11-22 Ran Tian , Ankur P. Parikh

As the large language models (LLMs) grow in size each day, efficient training and fine-tuning has never been as important as nowadays. This resulted in the great interest in parameter efficient fine-tuning (PEFT), and effective methods…

机器学习 · 计算机科学 2025-11-04 Dhananjaya Gowda , Seoha Song , Junhyun Lee , Harshith Goka

This paper introduces a reinforcement learning framework that employs Proximal Policy Optimization (PPO) to dynamically optimize the weights of multiple large language model (LLM)-generated formulaic alphas for stock trading strategies.…

计算工程、金融与科学 · 计算机科学 2026-03-05 Qizhao Chen , Hiroaki Kawashima

High-dimensional and sparse (HiDS) matrices are omnipresent in a variety of big data-related applications. Latent factor analysis (LFA) is a typical representation learning method that extracts useful yet latent knowledge from HiDS matrices…

机器学习 · 计算机科学 2022-04-19 Di Wu , Peng Zhang , Yi He , Xin Luo

Learner Performance-based Behavior using Simulated Annealing (LPBSA) is an improvement of the Learner Performance-based Behavior (LPB) algorithm. LPBSA, like LPB, has been proven to deal with single and complex problems. Simulated Annealing…

神经与进化计算 · 计算机科学 2025-01-30 Dana Rasul Hamad , Tarik A. Rashid

Radars provide robust perception of vehicle surroundings by effectively functioning in poor light and adverse weather conditions. Synthetic aperture radar (SAR) algorithms are employed to address the limited angular resolution of radars by…

信号处理 · 电气工程与系统科学 2026-03-10 S. Hamed Javadi , André Bourdoux , Adnan Albaba , Hichem Sahli

Analyzing multi-way measurements with variations across one mode of the dataset is a challenge in various fields including data mining, neuroscience and chemometrics. For example, measurements may evolve over time or have unaligned time…

机器学习 · 计算机科学 2022-09-07 Marie Roald , Carla Schenker , Vince D. Calhoun , Tülay Adalı , Rasmus Bro , Jeremy E. Cohen , Evrim Acar

Pretrained large language models (LLMs) are currently state-of-the-art for solving the vast majority of natural language processing tasks. While many real-world applications still require fine-tuning to reach satisfactory levels of…

Fine-tuning is a widely used strategy for adapting pre-trained models to new tasks, yet its methodology and theoretical properties in high-dimensional nonparametric settings with variable selection have not yet been developed. We propose a…

机器学习 · 统计学 2026-05-19 Jinhang Chai , Jianqing Fan , Cheng Gao , Qishuo Yin