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Principal component analysis (PCA) is a fundamental dimension reduction tool in statistics and machine learning. For large and high-dimensional data, computing the PCA (i.e., the singular vectors corresponding to a number of dominant…

数据结构与算法 · 计算机科学 2017-04-26 Wenjian Yu , Yu Gu , Jian Li , Shenghua Liu , Yaohang Li

We propose a robust principal component analysis (RPCA) framework to recover low-rank and sparse matrices from temporal observations. We develop an online version of the batch temporal algorithm in order to process larger datasets or…

机器学习 · 统计学 2022-08-04 Hong-Lan Botterman , Julien Roussel , Thomas Morzadec , Ali Jabbari , Nicolas Brunel

Recurrence is a fundamental property of dynamical systems, which can be exploited to characterise the system's behaviour in phase space. A powerful tool for their visualisation and analysis called recurrence plot was introduced in the late…

混沌动力学 · 物理学 2025-01-27 Norbert Marwan , Maria Carmen Romano , Marco Thiel , Jürgen Kurths

This work presents retQSS, a novel methodology for efficient modeling and simulation of particle systems in reticulated meshed geometries. On the simulation side, retQSS profits from the discrete-event nature of Quantized State System (QSS)…

计算物理 · 物理学 2021-09-17 Lucio Santi , Joaquín Fernández , Ernesto Kofman , Rodrigo Castro

This paper introduces UnSeenTimeQA, a novel data contamination-free time-sensitive question-answering (TSQA) benchmark. It differs from existing TSQA benchmarks by avoiding web-searchable queries grounded in the real world. We present a…

计算与语言 · 计算机科学 2025-06-04 Md Nayem Uddin , Amir Saeidi , Divij Handa , Agastya Seth , Tran Cao Son , Eduardo Blanco , Steven R. Corman , Chitta Baral

Table question answering (TQA) focuses on answering questions based on tabular data. Developing TQA systems targets effective interaction with tabular data for tasks such as cell retrieval and data analysis. While recent work has leveraged…

计算与语言 · 计算机科学 2025-11-12 Wei Zhou , Mohsen Mesgar , Heike Adel , Annemarie Friedrich

Electronic health record (EHR) data is an essential data source for machine learning for health, but researchers and clinicians face steep barriers in extracting and validating EHR data for modeling. Existing tools incur trade-offs between…

人机交互 · 计算机科学 2025-11-13 Ziyong Ma , Richard D. Boyce , Adam Perer , Venkatesh Sivaraman

State-of-the-art extractive question-answering models achieve superhuman performances on the SQuAD benchmark. Yet, they are unreasonably heavy and need expensive GPU computing to answer questions in a reasonable time. Thus, they cannot be…

计算与语言 · 计算机科学 2025-03-11 Sofian Chaybouti , Achraf Saghe , Aymen Shabou

Quantization approximates a deep network model with floating-point numbers by the one with low bit width numbers, in order to accelerate inference and reduce computation. Quantizing a model without access to the original data, zero-shot…

计算机视觉与模式识别 · 计算机科学 2022-11-18 Yan Luo , Yangcheng Gao , Zhao Zhang , Haijun Zhang , Mingliang Xu , Meng Wang

Mathematical modeling is a powerful tool in rheology, and we present pyRheo, an open-source package for Python designed to streamline the analysis of creep, stress relaxation, oscillation, and rotation tests. pyRheo contains a comprehensive…

软凝聚态物质 · 物理学 2024-12-23 Isaac Y. Miranda-Valdez , Aaro Niinistö , Tero Mäkinen , Juha Lejon , Juha Koivisto , Mikko J. Alava

Although deep neural networks have achieved tremendous success for question answering (QA), they are still suffering from heavy computational and energy cost for real product deployment. Further, existing QA systems are bottlenecked by the…

计算与语言 · 计算机科学 2021-09-03 Yuwei Fang , Shuohang Wang , Zhe Gan , Siqi Sun , Jingjing Liu , Chenguang Zhu

With the rapid growth of User-Generated Content (UGC) exchanged between users and sharing platforms, the need for video quality assessment in the wild is increasingly evident. UGC is typically acquired using consumer devices and undergoes…

图像与视频处理 · 电气工程与系统科学 2025-03-14 Xinyi Wang , Angeliki Katsenou , David Bull

Difficulty replicating baselines, high computational costs, and required domain expertise create persistent barriers to clinical AI research. To address these challenges, we introduce PyHealth 2.0, an enhanced clinical deep learning toolkit…

Quorum systems are a powerful mechanism for ensuring the consistency of replicated data. Production systems usually opt for majority quorums due to their simplicity and fault tolerance, but majority quorum systems provide poor throughput…

分布式、并行与集群计算 · 计算机科学 2021-04-12 Michael Whittaker , Aleksey Charapko , Joseph M. Hellerstein , Heidi Howard , Ion Stoica

The Hiperwalk package is designed to facilitate the simulation of quantum walks using heterogeneous high-performance computing, taking advantage of the parallel processing power of diverse processors such as CPUs, GPUs, and acceleration…

量子物理 · 物理学 2024-06-13 Paulo Motta , Gustavo A. Bezerra , Anderson F. P. Santos , Renato Portugal

Despite the proliferation of diverse hardware accelerators (e.g., NPU, TPU, DPU), deploying deep learning models on edge devices with fixed-point hardware is still challenging due to complex model quantization and conversion. Existing model…

机器学习 · 计算机科学 2023-08-07 Manasa Manohara , Sankalp Dayal , Tariq Afzal , Rahul Bakshi , Kahkuen Fu

In multivariate time series classification, although current sequence analysis models have excellent classification capabilities, they show significant shortcomings when dealing with long sequence multivariate data, such as prolonged…

机器学习 · 计算机科学 2024-10-29 Enshuo Yan , Huachuan Wang , Weihao Xia

Quantum machine learning represents a promising avenue for data processing, also for purposes of sequential temporal data analysis, as recently proposed in quantum reservoir computing (QRC). The possibility to operate on several platforms…

The visual quality of point clouds plays a crucial role in the development and broadcasting of immersive media. Therefore, investigating point cloud quality assessment (PCQA) is instrumental in facilitating immersive media applications,…

图像与视频处理 · 电气工程与系统科学 2025-01-28 Yipeng Liu , Qi Yang , Yujie Zhang , Yiling Xu , Le Yang , Xiaozhong Xu , Shan Liu

Retrieval-augmented question-answering systems combine retrieval techniques with large language models to provide answers that are more accurate and informative. Many existing toolkits allow users to quickly build such systems using…

计算与语言 · 计算机科学 2024-03-05 Xiao Yu , Yunan Lu , Zhou Yu