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Many optimization tasks involve streaming data with unknown concept drifts, posing a significant challenge as Streaming Data-Driven Optimization (SDDO). Existing methods, while leveraging surrogate model approximation and historical…

Machine Learning · Computer Science 2025-12-09 Yuan-Ting Zhong , Ting Huang , Xiaolin Xiao , Yue-Jiao Gong

Given a road network and a set of trajectory data, the anomalous behavior detection (ABD) problem is to identify drivers that show significant directional deviations, hardbrakings, and accelerations in their trips. The ABD problem is…

Outlier detection in tabular data is crucial for safeguarding data integrity in high-stakes domains such as cybersecurity, financial fraud detection, and healthcare, where anomalies can cause serious operational and economic impacts.…

Machine Learning · Computer Science 2025-10-13 Yihao Ang , Peicheng Yao , Yifan Bao , Yushuo Feng , Qiang Huang , Anthony K. H. Tung , Zhiyong Huang

Understanding travel demand and behavior, particularly route and mode choices, is critical for effective transportation planning and policy design in multi-modal systems with emerging mobility options. Multi-modal system-level data, such as…

Systems and Control · Electrical Eng. & Systems 2026-03-04 Xiaoyu Ma , Sean Qian

Out-of-distribution (OOD) detection aims to detect test samples that do not fall into any training in-distribution (ID) classes. Prior efforts focus on regularizing models with ID data only, largely underperforming counterparts that utilize…

Machine Learning · Computer Science 2025-05-20 Puning Yang , Jian Liang , Jie Cao , Ran He

Accurate travel time estimation (TTE) plays a crucial role in intelligent transportation systems. However, it remains challenging due to heterogeneous data sources and complex traffic dynamics. Moreover, traditional approaches typically…

Machine Learning · Computer Science 2026-01-27 Zhi Liu , Xuyuan Hu , Xiao Han , Zhehao Dai , Zhaolin Deng , Guojiang Shen , Xiangjie Kong

Building a general model capable of analyzing human trajectories across different geographic regions and different tasks becomes an emergent yet important problem for various applications. However, existing works suffer from the…

Multimedia · Computer Science 2025-09-03 Shuo Liu , Di Yao , Yan Lin , Gao Cong , Jingping Bi

Extract, Transform, Load (ETL) is an integral part of Data Warehousing (DW) implementation. The commercial tools that are used for this purpose captures lot of execution trace in form of various log files with plethora of information.…

Databases · Computer Science 2012-03-09 Saptarsi Goswami , Samiran Ghosh , Amlan Chakrabarti

Analyzing and forecasting trajectories of agents like pedestrians plays a pivotal role for embodied intelligent applications. The inherent indeterminacy of human behavior and complex social interaction among a rich variety of agents make…

Robotics · Computer Science 2024-10-28 Huajian Liu , Wei Dong , Kunpeng Fan , Chao Wang , Yongzhuo Gao

Transfer learning has recently become the dominant paradigm of machine learning. Pre-trained models fine-tuned for downstream tasks achieve better performance with fewer labelled examples. Nonetheless, it remains unclear how to develop…

Machine Learning · Computer Science 2024-01-30 Jonas Pfeiffer , Sebastian Ruder , Ivan Vulić , Edoardo Maria Ponti

Traditional anomaly detection in human mobility has primarily focused on trajectory-level analysis, identifying statistical outliers or spatiotemporal inconsistencies across aggregated movement traces. However, detecting individual-level…

Artificial Intelligence · Computer Science 2025-10-15 Junyi Xie , Jina Kim , Yao-Yi Chiang , Lingyi Zhao , Khurram Shafique

A large-scale labeled dataset is a key factor for the success of supervised deep learning in computer vision. However, a limited number of annotated data is very common, especially in ophthalmic image analysis, since manual annotation is…

Image and Video Processing · Electrical Eng. & Systems 2022-03-15 Zhiyuan Cai , Li Lin , Huaqing He , Xiaoying Tang

Ride-hailing platforms face significant challenges in optimizing order dispatching and driver repositioning operations in dynamic urban environments. Traditional approaches based on combinatorial optimization, rule-based heuristics, and…

Machine Learning · Computer Science 2025-05-30 Tengfei Lyu , Siyuan Feng , Hao Liu , Hai Yang

Detecting Out-of-Distribution (OOD) inputs is crucial for improving the reliability of deep neural networks in the real-world deployment. In this paper, inspired by the inherent distribution shift between ID and OOD data, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2024-10-11 Ao Ke , Wenlong Chen , Chuanwen Feng , Yukun Cao , Xike Xie , S. Kevin Zhou , Lei Feng

Pedestrian trajectory prediction is crucial for autonomous driving and robotics. While existing point-based and grid-based methods expose two main limitations: insufficiently modeling human motion dynamics, as they fail to balance local…

Computer Vision and Pattern Recognition · Computer Science 2025-08-01 Yanghong Liu , Xingping Dong , Ming Li , Weixing Zhang , Yidong Lou

Outliers are the points which are different from or inconsistent with the rest of the data. They can be novel, new, abnormal, unusual or noisy information. Outliers are sometimes more interesting than the majority of the data. The main…

Computer Vision and Pattern Recognition · Computer Science 2014-06-20 Singh Vijendra , Pathak Shivani

Detecting out-of-distribution (OOD) samples is important for deploying machine learning models in safety-critical applications such as autonomous driving and robot-assisted surgery. Existing research has mainly focused on unimodal scenarios…

Computer Vision and Pattern Recognition · Computer Science 2024-10-29 Hao Dong , Yue Zhao , Eleni Chatzi , Olga Fink

Unsupervised domain adaptation (UDA) enables models trained on a labeled source domain to handle new unlabeled domains. Recently, pre-trained vision-language models (VLMs) have demonstrated promising zero-shot performance by leveraging…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Xinyao Li , Jingjing Li , Zhekai Du , Lei Zhu , Heng Tao Shen

We propose a hybrid approach to temporal anomaly detection in access data of users to databases --- or more generally, any kind of subject-object co-occurrence data. We consider a high-dimensional setting that also requires fast computation…

Cryptography and Security · Computer Science 2019-08-13 Eyal Gutflaish , Aryeh Kontorovich , Sivan Sabato , Ofer Biller , Oded Sofer

Out-of-distribution (OOD) detection is a crucial task for deploying deep learning models in the wild. One of the major challenges is that well-trained deep models tend to perform over-confidence on unseen test data. Recent research attempts…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Mingrong Gong , Chaoqi Chen , Qingqiang Sun , Yue Wang , Hui Huang