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Real-world time series data often present recurrent or repetitive patterns and it is often generated in real time, such as transportation passenger volume, network traffic, system resource consumption, energy usage, and human gait.…

Machine Learning · Computer Science 2021-05-05 Ming-Chang Lee , Jia-Chun Lin , Ernst Gunnar Gran

Medical Anomaly Detection (MedAD) presents a significant opportunity to enhance diagnostic accuracy using Large Multimodal Models (LMMs) to interpret and answer questions based on medical images. However, the reliance on Supervised…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Haitao Zhang , Yingying Wang , Jiaxiang Wang , Haote Xu , Hongyang Zhang , Yirong Chen , Yue Huang , Xinghao Ding

System logs play a critical role in maintaining the reliability of software systems. Fruitful studies have explored automatic log-based anomaly detection and achieved notable accuracy on benchmark datasets. However, when applied to…

Software Engineering · Computer Science 2023-10-03 Jinyang Liu , Junjie Huang , Yintong Huo , Zhihan Jiang , Jiazhen Gu , Zhuangbin Chen , Cong Feng , Minzhi Yan , Michael R. Lyu

Deep neural networks are known to be vulnerable to unseen data: they may wrongly assign high confidence stcores to out-distribuion samples. Recent works try to solve the problem using representation learning methods and specific metrics. In…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Haowei He , Jiaye Teng , Yang Yuan

Despite the prevalence of reconstruction-based deep learning methods, time series anomaly detection remains a tremendous challenge. Existing approaches often struggle with limited temporal contexts, insufficient representation of normal…

Machine Learning · Computer Science 2025-07-16 Zhijie Zhong , Zhiwen Yu , Xing Xi , Yue Xu , Wenming Cao , Yiyuan Yang , Kaixiang Yang , Jane You

Time series anomaly detection (TSAD) is essential for maintaining the reliability and security of IoT-enabled service systems. Existing methods require training one specific model for each dataset, which exhibits limited generalization…

Machine Learning · Computer Science 2026-04-23 PengYu Chen , Shang Wan , Xiaohou Shi , Yuan Chang , Yan Sun , Sajal K. Das

Time series anomaly detection (TSAD) is an important data mining task with numerous applications in the IoT era. In recent years, a large number of deep neural network-based methods have been proposed, demonstrating significantly better…

Machine Learning · Computer Science 2022-08-04 Wenkai Li , Cheng Feng , Ting Chen , Jun Zhu

Logical image understanding involves interpreting and reasoning about the relationships and consistency within an image's visual content. This capability is essential in applications such as industrial inspection, where logical anomaly…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Er Jin , Qihui Feng , Yongli Mou , Stefan Decker , Gerhard Lakemeyer , Oliver Simons , Johannes Stegmaier

In this era of technological advancements, several cutting-edge techniques are being implemented to enhance Autonomous Driving (AD) systems, focusing on improving safety, efficiency, and adaptability in complex driving environments.…

Computation and Language · Computer Science 2025-02-27 Md Robiul Islam

Although large language models (LLMs) have achieved excellent performance in a variety of evaluation benchmarks, they still struggle in complex reasoning tasks which require specific knowledge and multi-hop reasoning. To improve the…

Computation and Language · Computer Science 2023-11-07 Zhipeng Chen , Kun Zhou , Beichen Zhang , Zheng Gong , Wayne Xin Zhao , Ji-Rong Wen

Numerous methods for time-series anomaly detection (TSAD) have emerged in recent years, most of which are unsupervised and assume that only normal samples are available during the training phase, due to the challenge of obtaining abnormal…

Machine Learning · Computer Science 2024-08-08 Thomas Lai , Thi Kieu Khanh Ho , Narges Armanfard

Temporal understanding in autonomous driving (AD) remains a significant challenge, even for recent state-of-the-art (SoTA) Vision-Language Models (VLMs). Prior work has introduced datasets and benchmarks aimed at improving temporal…

Computer Vision and Pattern Recognition · Computer Science 2025-12-18 Kevin Cannons , Saeed Ranjbar Alvar , Mohammad Asiful Hossain , Ahmad Rezaei , Mohsen Gholami , Alireza Heidarikhazaei , Zhou Weimin , Yong Zhang , Mohammad Akbari

In real-world applications with Large Language Models (LLMs), external retrieval mechanisms - such as Search-Augmented Generation (SAG), tool utilization, and Retrieval-Augmented Generation (RAG) - are often employed to enhance the quality…

Computation and Language · Computer Science 2025-02-25 Tzu-Lin Kuo , Feng-Ting Liao , Mu-Wei Hsieh , Fu-Chieh Chang , Po-Chun Hsu , Da-Shan Shiu

Anomaly detection (AD) identifies the defect regions of a given image. Recent works have studied AD, focusing on learning AD without abnormal images, with long-tailed distributed training data, and using a unified model for all classes. In…

Computer Vision and Pattern Recognition · Computer Science 2025-07-24 Chiao-An Yang , Kuan-Chuan Peng , Raymond A. Yeh

Test-time Scaling (TTS) has been demonstrated to significantly enhance the reasoning capabilities of Large Language Models (LLMs) during the inference phase without altering model parameters. However, existing TTS methods are largely…

Computation and Language · Computer Science 2025-09-30 Guibin Zhang , Fanci Meng , Guancheng Wan , Zherui Li , Kun Wang , Zhenfei Yin , Lei Bai , Shuicheng Yan

The current state of machine learning scholarship in Timeseries Anomaly Detection (TAD) is plagued by the persistent use of flawed evaluation metrics, inconsistent benchmarking practices, and a lack of proper justification for the choices…

Machine Learning · Computer Science 2024-06-06 M. Saquib Sarfraz , Mei-Yen Chen , Lukas Layer , Kunyu Peng , Marios Koulakis

Anomaly detection (AD) plays a crucial role in time series applications, primarily because time series data is employed across real-world scenarios. Detecting anomalies poses significant challenges since anomalies take diverse forms making…

Machine Learning · Computer Science 2025-01-03 Jihan Ghanim , Mariette Awad

In this technical report, we target generating anthropomorphized personas for LLM-based characters in an online manner, including visual appearance, personality and tones, with only text descriptions. To achieve this, we first leverage the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Yilin Zhao , Xinbin Yuan , Shanghua Gao , Zhijie Lin , Qibin Hou , Jiashi Feng , Daquan Zhou

Patients must possess the knowledge necessary to actively participate in their care. We present NoteAid-Chatbot, a conversational AI that promotes patient understanding via a novel 'learning as conversation' framework, built on a…

Artificial Intelligence · Computer Science 2025-10-28 Won Seok Jang , Hieu Tran , Manav Mistry , SaiKiran Gandluri , Yifan Zhang , Sharmin Sultana , Sunjae Kown , Yuan Zhang , Zonghai Yao , Hong Yu

Time series data is fundamental to decision-making across many domains including healthcare, finance, power systems, and logistics. However, analyzing this data correctly often requires incorporating unstructured contextual information,…

Machine Learning · Computer Science 2026-03-17 Felix Parker , Nimeesha Chan , Chi Zhang , Kimia Ghobadi