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200 篇论文

A wide range of (multivariate) temporal (1D) and spatial (2D) data analysis tasks, such as grouping vehicle sensor trajectories, can be formulated as clustering with given metric constraints. Existing metric-constrained clustering…

机器学习 · 计算机科学 2024-06-04 Zhangyu Wang , Gengchen Mai , Krzysztof Janowicz , Ni Lao

A Bayesian approach to nonlinear inverse problems is considered where the unknown quantity (input) is a random spatial field. The forward model is complex and non-linear, therefore computationally expensive. An emulator-based methodology is…

应用统计 · 统计学 2021-05-11 Anirban Mondal , Bani Mallick

In this work, a system scheme is proposed for tracking a radio emitting target moving in two-dimensional space. The localization is based on the use of biased time-of-arrival (TOA) measurements obtained at two asynchronous receivers, each…

系统与控制 · 计算机科学 2014-05-14 Siamak Yousefi , Xiao-Wen Chang , Benoit Champagne

This article proposes an integrated boresight guidance and control (IBGC) scheme to address the boresight reorientation problem of spacecraft under temporal and pointing constraints. A $C^1$ continuous, saturated prescribed-time adjustment…

系统与控制 · 电气工程与系统科学 2025-08-04 Xiaodong Shao , Haoyang Yang , Haoran Li , Zongyu Zuo , Jose Guadalupe Romero , Qinglei Hu

Periodic dynamical systems ubiquitously exist in science and engineering. The harmonic balance (HB) method and its variants have been the most widely-used approaches for such systems, but are either confined to low-order approximations or…

数值分析 · 数学 2022-03-15 Honghua Dai , Zipu Yan , Xuechuan Wang , Xiaokui Yue , Satya N. Atluri

This paper presents the first study for temporal relation extraction in a zero-shot setting focusing on biomedical text. We employ two types of prompts and five LLMs (GPT-3.5, Mixtral, Llama 2, Gemma, and PMC-LLaMA) to obtain responses…

计算与语言 · 计算机科学 2024-06-18 Vasiliki Kougia , Anastasiia Sedova , Andreas Stephan , Klim Zaporojets , Benjamin Roth

One of the fundamental challenges associated with reinforcement learning (RL) is that collecting sufficient data can be both time-consuming and expensive. In this paper, we formalize a concept of time reversal symmetry in a Markov decision…

机器学习 · 计算机科学 2023-11-29 Brett Barkley , Amy Zhang , David Fridovich-Keil

Time series aggregation (TSA) aims to construct temporally aggregated optimization models that accurately represent the output space of their full-scale counterparts while using a significantly reduced temporal dimensionality. This paper…

最优化与控制 · 数学 2026-03-16 Thomas Klatzer , David Cardona-Vasquez , Luca Santosuosso , Sonja Wogrin

Providing a promising pathway to link the human brain with external devices, Brain-Computer Interfaces (BCIs) have seen notable advancements in decoding capabilities, primarily driven by increasingly sophisticated techniques, especially…

人机交互 · 计算机科学 2024-01-09 Martin Wimpff , Mario Döbler , Bin Yang

Hierarchical Text Classification (HTC) aims to categorize text data based on a structured label hierarchy, resulting in predicted labels forming a sub-hierarchy tree. The semantics of the text should align with the semantics of the labels…

计算与语言 · 计算机科学 2024-09-04 Ashish Kumar , Durga Toshniwal

Pulsar timing arrays (PTAs) detect low-frequency gravitational waves (GWs) by looking for correlated deviations in pulse arrival times. Current Bayesian searches use Markov Chain Monte Carlo (MCMC) methods, which struggle to sample the…

天体物理仪器与方法 · 物理学 2023-03-08 Gabriel E. Freedman , Aaron D. Johnson , Rutger van Haasteren , Sarah J. Vigeland

We focus on power-law coherency as an alternative approach towards studying power-law cross-correlations between simultaneously recorded time series. To be able to study empirical data, we introduce three estimators of the power-law…

统计金融 · 定量金融 2018-10-30 Ladislav Kristoufek

Human Activity Recognition (HAR) models often suffer from performance degradation in real-world applications due to distribution shifts in activity patterns across individuals. Test-Time Adaptation (TTA) is an emerging learning paradigm…

计算机视觉与模式识别 · 计算机科学 2024-02-08 Shuoyuan Wang , Jindong Wang , HuaJun Xi , Bob Zhang , Lei Zhang , Hongxin Wei

Large language models (LLMs), with their billions of parameters, pose substantial challenges for deployment on edge devices, straining both memory capacity and computational resources. Block Floating Point (BFP) quantisation reduces memory…

硬件体系结构 · 计算机科学 2025-04-23 Xiaomeng Han , Yuan Cheng , Jing Wang , Junyang Lu , Hui Wang , X. x. Zhang , Ning Xu , Dawei Yang , Zhe Jiang

Large language models (LLMs) have demonstrated their effectiveness in multivariate time series classification (MTSC). Effective adaptation of LLMs for MTSC necessitates informative data representations. Existing LLM-based methods directly…

人工智能 · 计算机科学 2025-10-29 Jiahao Wang , Mingyue Cheng , Qingyang Mao , Yitong Zhou , Daoyu Wang , Qi Liu , Feiyang Xu , Xin Li

Fine-tuning large language models (LLMs) with low-rank adaptation (LoRA) is a cost-effective way to incorporate information from a specific dataset. However, when a problem requires incorporating information from multiple datasets - as in…

机器学习 · 计算机科学 2026-04-03 Liyi Zhang , Jake Snell , Thomas L. Griffiths

Test-time adaptation (TTA) aims to improve model robustness under distribution shifts by adapting to unlabeled test data, but most existing methods rely on backpropagation (BP), which is computationally costly and incompatible with…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Ronghao Zhang , Shuaicheng Niu , Qi Deng , Yanjie Dong , Jian Chen , Runhao Zeng

Summary: Longer sequencing reads, with at least 200 bases per template are now common. While traditional aligners have adopted new strategies to improve the mapping of longer reads, aligners specific to bisulfite-sequencing were optimized…

基因组学 · 定量生物学 2014-05-14 Brent S. Pedersen , Kenneth Eyring , Subhajyoti De , Ivana V. Yang , David A. Schwartz

Finite-horizon Markov decision processes (MDPs) with high-dimensional exogenous uncertainty and endogenous states arise in operations and finance, including the valuation and exercise of Bermudan and real options, but face a scalability…

最优化与控制 · 数学 2026-03-16 Negar Soheili , Selvaprabu Nadarajah , Bo Yang

Long-term test-time adaptation (TTA) is a challenging task due to error accumulation. Recent approaches tackle this issue by actively labeling a small proportion of samples in each batch, yet the annotation burden quickly grows as the batch…

计算机视觉与模式识别 · 计算机科学 2025-03-20 Guowei Wang , Changxing Ding