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Trajectory data combines the complexities of time series, spatial data, and (sometimes irrational) movement behavior. As data availability and computing power have increased, so has the popularity of deep learning from trajectory data. This…

Machine Learning · Computer Science 2025-04-02 Anita Graser , Anahid Jalali , Jasmin Lampert , Axel Weißenfeld , Krzysztof Janowicz

Learning motion tracking from rich human motion data is a foundational task for achieving general control in humanoid robots, enabling them to perform diverse behaviors. However, discrepancies in morphology and dynamics between humans and…

Robotics · Computer Science 2026-03-02 Yuhan Li , Peiyuan Zhi , Yunshen Wang , Tengyu Liu , Sixu Yan , Wenyu Liu , Xinggang Wang , Baoxiong Jia , Siyuan Huang

We introduce CommerceMM - a multimodal model capable of providing a diverse and granular understanding of commerce topics associated to the given piece of content (image, text, image+text), and having the capability to generalize to a wide…

Computer Vision and Pattern Recognition · Computer Science 2022-02-16 Licheng Yu , Jun Chen , Animesh Sinha , Mengjiao MJ Wang , Hugo Chen , Tamara L. Berg , Ning Zhang

Recently, many multi-modal trackers prioritize RGB as the dominant modality, treating other modalities as auxiliary, and fine-tuning separately various multi-modal tasks. This imbalance in modality dependence limits the ability of methods…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Xiantao Hu , Bineng Zhong , Qihua Liang , Zhiyi Mo , Liangtao Shi , Ying Tai , Jian Yang

Trajectory prediction of vehicles in city-scale road networks is of great importance to various location-based applications such as vehicle navigation, traffic management, and location-based recommendations. Existing methods typically…

Machine Learning · Computer Science 2021-12-16 Yuebing Liang , Zhan Zhao

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

Trajectory representation learning (TRL) maps trajectories to vectors that can be used for many downstream tasks. Existing TRL methods use either grid trajectories, capturing movement in free space, or road trajectories, capturing movement…

Machine Learning · Computer Science 2024-11-25 Silin Zhou , Shuo Shang , Lisi Chen , Peng Han , Christian S. Jensen

Spatio-temporal trajectory analytics is at the core of smart mobility solutions, which offers unprecedented information for diversified applications such as urban planning, infrastructure development, and vehicular networks. Trajectory…

Data Structures and Algorithms · Computer Science 2023-03-20 Danlei Hu , Lu Chen , Hanxi Fang , Ziquan Fang , Tianyi Li , Yunjun Gao

LVLMs have been shown to perform excellently in image-level tasks such as VQA and caption. However, in many instance-level tasks, such as visual grounding and object detection, LVLMs still show performance gaps compared to previous expert…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Teng Fu , Mengyang Zhao , Ke Niu , Kaixin Peng , Bin Li

Trajectory representation learning (TRL) maps trajectories to vectors that can then be used for various downstream tasks, including trajectory similarity computation, trajectory classification, and travel-time estimation. However, existing…

Machine Learning · Computer Science 2024-12-02 Silin Zhou , Shuo Shang , Lisi Chen , Christian S. Jensen , Panos Kalnis

Omni-modal Large Language Models (OLLMs) that process text, images, videos, and audio introduce new challenges for safety and value guardrails in human-AI interaction. Prior guardrail research largely targets unimodal settings and typically…

Artificial Intelligence · Computer Science 2025-12-03 Boyu Zhu , Xiaofei Wen , Wenjie Jacky Mo , Tinghui Zhu , Yanan Xie , Peng Qi , Muhao Chen

Motion retrieval is crucial for motion acquisition, offering superior precision, realism, controllability, and editability compared to motion generation. Existing approaches leverage contrastive learning to construct a unified embedding…

Computer Vision and Pattern Recognition · Computer Science 2025-08-01 Shiyao Yu , Zi-An Wang , Kangning Yin , Zheng Tian , Mingyuan Zhang , Weixin Si , Shihao Zou

Spatiotemporal trajectories are sequences of timestamped locations, which enable a variety of analyses that in turn enable important real-world applications. It is common to map trajectories to vectors, called embeddings, before subsequent…

Machine Learning · Computer Science 2024-11-13 Yan Lin , Zeyu Zhou , Yicheng Liu , Haochen Lv , Haomin Wen , Tianyi Li , Yushuai Li , Christian S. Jensen , Shengnan Guo , Youfang Lin , Huaiyu Wan

Majority of research in learning based methods has been towards designing and training networks for specific tasks. However, many of the learning based tasks, across modalities, share commonalities and could be potentially tackled in a…

Computer Vision and Pattern Recognition · Computer Science 2023-11-13 Siddharth Srivastava , Gaurav Sharma

Recent advances in large language models (LLMs) have sparked growing interest in integrating language-driven techniques into trajectory prediction. By leveraging their semantic and reasoning capabilities, LLMs are reshaping how autonomous…

Computation and Language · Computer Science 2025-10-08 Yi Xu , Ruining Yang , Yitian Zhang , Jianglin Lu , Mingyuan Zhang , Yizhou Wang , Lili Su , Yun Fu

Trajectory prediction seeks to forecast the future motion of dynamic entities, such as vehicles and pedestrians, given a temporal horizon of historical movement data and environmental context. A central challenge in this domain is the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Jintao Sun , Hu Zhang , Gangyi Ding , Zhedong Zheng

Open-Vocabulary Multi-Object Tracking (OV-MOT) aims to enable approaches to track objects without being limited to a predefined set of categories. Current OV-MOT methods typically rely primarily on instance-level detection and association,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Yunhao Li , Yifan Jiao , Dan Meng , Heng Fan , Libo Zhang

In this paper, a general moving object trajectories framework is put forward to allow independent applications processing trajectories data benefit from a high level of interoperability, information sharing as well as an efficient answer…

Databases · Computer Science 2012-05-09 Azedine Boulmakoul , Lamia Karim , Ahmed Lbath

Omni-modal large language models have demonstrated remarkable potential in holistic multimodal understanding; however, the token explosion caused by high-resolution audio and video inputs remains a critical bottleneck for real-time…

Artificial Intelligence · Computer Science 2026-05-15 Yeo Jeong Park , Hyemi Jang , Minseo Choi , Jongsun Lee , Jooyoung Choi , Yongkweon Jeon

3D multi-object tracking and trajectory prediction are two crucial modules in autonomous driving systems. Generally, the two tasks are handled separately in traditional paradigms and a few methods have started to explore modeling these two…

Computer Vision and Pattern Recognition · Computer Science 2024-07-01 Jiaheng Zhuang , Guoan Wang , Siyu Zhang , Xiyang Wang , Hangning Zhou , Ziyao Xu , Chi Zhang , Zhiheng Li