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The Iterative Closest Point (ICP) algorithm is a crucial component of LiDAR-based SLAM algorithms. However, its performance can be negatively affected in unstructured environments that lack features and geometric structures, leading to low…

Robotics · Computer Science 2025-06-03 Haosong Yue , Qingyuan Xu , Fei Chen , Jia Pan , Weihai Chen

We consider the problem of predicting cellular network performance (signal maps) from measurements collected by several mobile devices. We formulate the problem within the online federated learning framework: (i) federated learning (FL)…

Machine Learning · Computer Science 2024-01-09 Evita Bakopoulou , Mengwei Yang , Jiang Zhang , Konstantinos Psounis , Athina Markopoulou

Localizing keypoints of an object is a basic visual problem. However, supervised learning of a keypoint localization network often requires a large amount of data, which is expensive and time-consuming to obtain. To remedy this, there is an…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Can Wang , Sheng Jin , Yingda Guan , Wentao Liu , Chen Qian , Ping Luo , Wanli Ouyang

Protecting location privacy in mobile services has recently received significant consideration as Location-Based Service (LBS) can reveal user locations to attackers. A problem in the existing cloaking schemes is that location…

Cryptography and Security · Computer Science 2017-09-13 Hiep H. Nguyen

Human travel trajectory mining is crucial for transportation systems, enhancing route optimization, traffic management, and the study of human travel patterns. Previous rule-based approaches without the integration of semantic information…

Artificial Intelligence · Computer Science 2024-08-21 Yifan Liu , Chenchen Kuai , Haoxuan Ma , Xishun Liao , Brian Yueshuai He , Jiaqi Ma

Synthetic data generation is a fundamental task for many data management and data science applications. Spatial data is of particular interest, and its sensitive nature often leads to privacy concerns. We introduce GeoPointGAN, a novel…

Machine Learning · Computer Science 2022-05-19 Teddy Cunningham , Konstantin Klemmer , Hongkai Wen , Hakan Ferhatosmanoglu

Website reliability labels underpin almost all research in misinformation detection. However, misinformation sources often exhibit transient behavior, which makes many such labeled lists obsolete over time. We demonstrate that Search Engine…

Social and Information Networks · Computer Science 2024-06-19 Peter Carragher , Evan M. Williams , Kathleen M. Carley

The key to multi-label image classification (MLC) is to improve model performance by leveraging label correlations. Unfortunately, it has been shown that overemphasizing co-occurrence relationships can cause the overfitting issue of the…

Computer Vision and Pattern Recognition · Computer Science 2024-06-14 Ming-Kun Xie , Jia-Hao Xiao , Pei Peng , Gang Niu , Masashi Sugiyama , Sheng-Jun Huang

The advancement of smartphones with various type of sensors enabled us to harness diverse information with crowd sensing mobile application. However, traditional approaches have suffered drawbacks such as high battery consumption as a trade…

The emergence of synthetic data for privacy protection, training data generation, or simply convenient access to quasi-realistic data in any shape or volume complicates the concept of ground truth. Synthetic data mimic real-world…

Computers and Society · Computer Science 2025-09-18 Dietmar Offenhuber

Existing cross-domain keypoint detection methods always require accessing the source data during adaptation, which may violate the data privacy law and pose serious security concerns. Instead, this paper considers a realistic problem…

Computer Vision and Pattern Recognition · Computer Science 2023-02-10 Yuhe Ding , Jian Liang , Bo Jiang , Aihua Zheng , Ran He

Machine-generated texts (MGTs) pose risks such as disinformation and phishing, underscoring the need for reliable detection. Metric-based methods, which extract statistically distinguishable features of MGTs, are often more practical than…

Computation and Language · Computer Science 2026-05-18 Chenwang Wu , Yiuming Cheung , Bo Han , Shuhai Zhang , Defu Lian

Understanding human mobility behavior is crucial for numerous applications, including crowd management, location-based recommendations, and the estimation of pandemic spread. Machine learning models can predict the Points of Interest (POIs)…

Machine Learning · Computer Science 2024-11-26 Ziyao Li , Shang-Ling Hsu , Cyrus Shahabi

Next Point-of-Interest (POI) prediction is a fundamental task in location-based services, especially critical for large-scale navigation platforms like AMAP that serve billions of users across diverse lifestyle scenarios. While recent POI…

Information Retrieval · Computer Science 2026-02-12 Fangye Wang , Haowen Lin , Yifang Yuan , Siyuan Wang , Xiaojiang Zhou , Song Yang , Pengjie Wang

Exploiting pseudo labels (e.g., categories and bounding boxes) of unannotated objects produced by a teacher detector have underpinned much of recent progress in semi-supervised object detection (SSOD). However, due to the limited…

Computer Vision and Pattern Recognition · Computer Science 2023-02-01 Lei Zhang , Yuxuan Sun , Wei Wei

In partial multi-label learning (PML), each data example is equipped with a candidate label set, which consists of multiple ground-truth labels and other false-positive labels. Recently, graph-based methods, which demonstrate a good ability…

Machine Learning · Computer Science 2023-05-11 Haobo Wang , Shisong Yang , Gengyu Lyu , Weiwei Liu , Tianlei Hu , Ke Chen , Songhe Feng , Gang Chen

Learning-outcome prediction (LOP) is a long-standing and critical problem in educational routes. Many studies have contributed to developing effective models while often suffering from data shortage and low generalization to various…

Machine Learning · Computer Science 2023-12-27 Yupei Zhang , Yuxin Li , Yifei Wang , Shuangshuang Wei , Yunan Xu , Xuequn Shang

The progress of location-based services has led to serious concerns on location privacy leakage. For effective and efficient location privacy preservation (LPP), existing methods are still not fully competent. They are often vulnerable…

Social and Information Networks · Computer Science 2018-07-31 Cheng Wang , Zhiyang Xie

In this paper, we present a novel approach for object recognition in real-time by employing multilevel feature analysis and demonstrate the practicality of adapting feature extraction into a Naive Bayesian classification framework that…

Computer Vision and Pattern Recognition · Computer Science 2017-10-31 Yang Cheng , Timeo Dubois

Point-of-Interest (POI) recommendation plays a vital role in various location-aware services. It has been observed that POI recommendation is driven by both sequential and geographical influences. However, since there is no annotated label…

Information Retrieval · Computer Science 2023-09-15 Yifang Qin , Yifan Wang , Fang Sun , Wei Ju , Xuyang Hou , Zhe Wang , Jia Cheng , Jun Lei , Ming Zhang
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