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Ultra-dense networks (UDNs) represent a transformative access architecture for upcoming sixth generation (6G) systems, poised to meet the surging demand for high data rates. Achieving precise synchronization across diverse base stations…

Multiagent Systems · Computer Science 2025-04-08 Debjani Goswami , Indrakshi Dey , Nicola Marchetti , Suvra Sekhar Das

The integration of high-precision cellular localization and machine learning (ML) is considered a cornerstone technique in future cellular navigation systems, offering unparalleled accuracy and functionality. This study focuses on…

Signal Processing · Electrical Eng. & Systems 2024-05-17 Guoda Tian , Dino Pjanić , Xuesong Cai , Bo Bernhardsson , Fredrik Tufvesson

Discriminative features play an important role in image and object classification and also in other fields of research such as semi-supervised learning, fine-grained classification, out of distribution detection. Inspired by Linear…

Computer Vision and Pattern Recognition · Computer Science 2021-07-14 Mai Lan Ha , Gianni Franchi , Emanuel Aldea , Volker Blanz

Accurate, continuous, and reliable positioning is a critical component of achieving autonomous driving. However, in complex urban canyon environments, the vulnerability of a stand-alone sensor and non-line-of-sight (NLOS) caused by high…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Jingrong Wang , Bo Xu , Ronghe Jin , Shoujian Zhang , Kefu Gao , Jingnan Liu

Semi-supervised object detection (SSOD), leveraging unlabeled data to boost object detectors, has become a hot topic recently. However, existing SSOD approaches mainly focus on horizontal objects, leaving oriented objects common in aerial…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Dingkang Liang , Wei Hua , Chunsheng Shi , Zhikang Zou , Xiaoqing Ye , Xiang Bai

Accurate Computer-Assisted Diagnosis, associated with proper data wrangling, can alleviate the risk of overlooking the diagnosis in a clinical environment. Towards this, as a Data Augmentation (DA) technique, Generative Adversarial Networks…

Computer Vision and Pattern Recognition · Computer Science 2019-08-23 Changhee Han , Kohei Murao , Tomoyuki Noguchi , Yusuke Kawata , Fumiya Uchiyama , Leonardo Rundo , Hideki Nakayama , Shin'ichi Satoh

Distributed Denial of Service (DDoS) attacks are a major concern in network security, as they overwhelm systems with excessive traffic, compromise sensitive data, and disrupt network services. Accurately detecting these attacks is crucial…

Cryptography and Security · Computer Science 2024-10-15 Kanthimathi S , Shravan Venkatraman , Jayasankar K S , Pranay Jiljith T , Jashwanth R

Global navigation satellite systems (GNSS) face significant challenges in urban and sub-urban areas due to non-line-of-sight (NLOS) propagation, multipath effects, and low received power levels, resulting in highly non-linear and…

Machine Learning · Computer Science 2025-04-22 M. Humayun Kabir , Md. Ali Hasan , Md. Shafiqul Islam , Kyeongjun Ko , Wonjae Shin

In recent years, a variety of gradient-based methods have been developed to solve Bi-Level Optimization (BLO) problems in machine learning and computer vision areas. However, the theoretical correctness and practical effectiveness of these…

Machine Learning · Computer Science 2022-01-04 Risheng Liu , Pan Mu , Xiaoming Yuan , Shangzhi Zeng , Jin Zhang

Instance object detection plays an important role in intelligent monitoring, visual navigation, human-computer interaction, intelligent services and other fields. Inspired by the great success of Deep Convolutional Neural Network (DCNN),…

Computer Vision and Pattern Recognition · Computer Science 2021-12-08 Rui Wang , Chengtun Wu , Jiawen Xin , Liang Zhang

Accurate Computer-Assisted Diagnosis, relying on large-scale annotated pathological images, can alleviate the risk of overlooking the diagnosis. Unfortunately, in medical imaging, most available datasets are small/fragmented. To tackle…

Computer Vision and Pattern Recognition · Computer Science 2019-08-14 Changhee Han , Yoshiro Kitamura , Akira Kudo , Akimichi Ichinose , Leonardo Rundo , Yujiro Furukawa , Kazuki Umemoto , Yuanzhong Li , Hideki Nakayama

Generalized category discovery (GCD) is an important and challenging task in open-world learning. Specifically, given some labeled data of known classes, GCD aims to cluster unlabeled data that contain both known and unknown classes.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Zhimao Peng , Enguang Wang , Fei Yang , Xialei Liu , Ming-Ming Cheng

Time-of-arrival (TOA)-based localization in mixed line-of-sight (LOS) and non-line-of-sight (NLOS) environments is challenging because conventional Euclidean range models do not capture diffraction-dominated propagation. We show that the…

Signal Processing · Electrical Eng. & Systems 2026-04-30 Gaurav Duggal , Richard M. Buehrer , Harpreet S. Dhillon , Jeffrey H. Reed

Modern deep neural network models are known to erroneously classify out-of-distribution (OOD) test data into one of the in-distribution (ID) training classes with high confidence. This can have disastrous consequences for safety-critical…

Computer Vision and Pattern Recognition · Computer Science 2022-09-23 Ramya S. Hebbalaguppe , Soumya Suvra Goshal , Jatin Prakash , Harshad Khadilkar , Chetan Arora

We present GNC-Pose, a fully learning-free monocular 6D object pose estimation pipeline for textured objects that combines rendering-based initialization, geometry-aware correspondence weighting, and robust GNC optimization. Starting from…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 Xiujin Liu

The fifth-generation (5G) of mobile communication supported by millimetre-wave (mmWave) technology and higher base station (BS) densification facilitate to enhance user equipment (UE) positioning. Therefore, 5G cellular system is designed…

Signal Processing · Electrical Eng. & Systems 2023-10-24 A. Indika Perera , K. B. Shashika Manosha , Nandana Rajatheva , Matti Latva-aho

Convolutional neural networks (CNNs) have been successful in representing the fully-connected inferencing ability perceived to be seen in the human brain: they take full advantage of the hierarchy-style patterns commonly seen in complex…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Joshua Ball

Reliably assessing the error in an estimated vehicle position is integral for ensuring the vehicle's safety in urban environments. Many existing approaches use GNSS measurements to characterize protection levels (PLs) as probabilistic upper…

Robotics · Computer Science 2021-04-14 Shubh Gupta , Grace X. Gao

Our algorithm GNN: Graph Neural Network and Large Language Model for Data Discovery inherit the benefits of \cite{hoang2024plod} (PLOD: Predictive Learning Optimal Data Discovery), \cite{Hoang2024BODBO} (BOD: Blindly Optimal Data Discovery)…

Databases · Computer Science 2024-08-28 Thomas Hoang

The ubiquity, large bandwidth, and spatial diversity of the fifth generation (5G) cellular signal render it a promising candidate for accurate positioning in indoor environments where the global navigation satellite system (GNSS) signal is…

Signal Processing · Electrical Eng. & Systems 2022-08-10 Mengguan Pan , Peng Liu , Shengheng Liu , Wangdong Qi , Yongming Huang , Xiaohu You , Xinghua Jia , Xiaodong Li