Search Results for author: Wenjun Xu

Found 20 papers, 0 papers with code

Rate-Distortion-Perception Controllable Joint Source-Channel Coding for High-Fidelity Generative Communications

no code implementations26 Aug 2024 Kailin Tan, Jincheng Dai, Zhenyu Liu, Sixian Wang, Xiaoqi Qin, Wenjun Xu, Kai Niu, Ping Zhang

Based on this framework, we introduce a distortion-perception controllable transmission (DPCT) model, which addresses the variation in the perception-distortion trade-off.

Semantic Communications with Explicit Semantic Bases: Model, Architecture, and Open Problems

no code implementations10 Aug 2024 Fengyu Wang, Yuan Zheng, Wenjun Xu, Junxiao Liang, Ping Zhang

Compared to traditional communication systems that focus on the accurate reconstruction of bit sequences, semantic communications (SemComs), which aim to successfully deliver information connotation, have been regarded as the key technology for next-generation communication systems.

SSVT: Self-Supervised Vision Transformer For Eye Disease Diagnosis Based On Fundus Images

no code implementations20 Apr 2024 Jiaqi Wang, Mengtian Kang, Yong liu, Chi Zhang, Ying Liu, Shiming Li, Yue Qi, Wenjun Xu, Chenyu Tang, Edoardo Occhipinti, Mayinuer Yusufu, Ningli Wang, Weiling Bai, Shuo Gao, Luigi G. Occhipinti

Machine learning-based fundus image diagnosis technologies trigger worldwide interest owing to their benefits such as reducing medical resource power and providing objective evaluation results.

Diagnosis of Multiple Fundus Disorders Amidst a Scarcity of Medical Experts Via Self-supervised Machine Learning

no code implementations20 Apr 2024 Yong liu, Mengtian Kang, Shuo Gao, Chi Zhang, Ying Liu, Shiming Li, Yue Qi, Arokia Nathan, Wenjun Xu, Chenyu Tang, Edoardo Occhipinti, Mayinuer Yusufu, Ningli Wang, Weiling Bai, Luigi Occhipinti

Fundus diseases are major causes of visual impairment and blindness worldwide, especially in underdeveloped regions, where the shortage of ophthalmologists hinders timely diagnosis.

SemHARQ: Semantic-Aware HARQ for Multi-task Semantic Communications

no code implementations12 Apr 2024 Jiangjing Hu, Fengyu Wang, Wenjun Xu, Hui Gao, Ping Zhang

Intelligent task-oriented semantic communications (SemComs) have witnessed great progress with the development of deep learning (DL).

Feature Importance Vehicle Re-Identification

Semantic Communications with Explicit Semantic Base for Image Transmission

no code implementations12 Aug 2023 Yuan Zheng, Fengyu Wang, Wenjun Xu, Miao Pan, Ping Zhang

Semantic communications, aiming at ensuring the successful delivery of the meaning of information, are expected to be one of the potential techniques for the next generation communications.

Decoder Image Reconstruction +1

Dynamic UAV Swarm Collaboration for Multi-Targets Tracking under Malicious Jamming: Joint Power, Path and Target Association Optimization

no code implementations28 Jun 2023 Lanhua Xiang, Fengyu Wang, Wenjun Xu, Tiankui Zhang, Miao Pan, Zhu Han

First, a cluster-evolutionary target association (CETA) algorithm is proposed, which involves dividing the UAV swarm into the multiple sub-swarms and individually matching these sub-swarms to targets.

Scalable Multi-task Semantic Communication System with Feature Importance Ranking

no code implementations12 Apr 2023 Jiangjing Hu, Fengyu Wang, Wenjun Xu, Hui Gao, Ping Zhang

Semantic communications are expected to be an innovative solution to the emerging intelligent applications in the era of connected intelligence.

Feature Importance Semantic Communication

Semantic Communication for Internet of Vehicles: A Multi-User Cooperative Approach

no code implementations6 Dec 2022 Wenjun Xu, Yimeng Zhang, Fengyu Wang, Zhijin Qin, Chenyao Liu, Ping Zhang

Internet of Vehicles (IoV) is expected to become the central infrastructure to provide advanced services to connected vehicles and users for higher transportation efficiency and security.

Image Retrieval Retrieval +1

Caching Placement and Resource Allocation for Cache-Enabling UAV NOMA Networks

no code implementations12 Aug 2020 Tiankui Zhang, Ziduan Wang, Yuanwei Liu, Wenjun Xu, Arumugam Nallanathan

In cache-enabling UAV NOMA networks, the caching placement of content caching phase and radio resource allocation of content delivery phase are crucial for network performance.

Q-Learning Scheduling

Cache-enabling UAV Communications: Network Deployment and Resource Allocation

no code implementations22 Jul 2020 Tiankui Zhang, Yi Wang, Yuanwei Liu, Wenjun Xu, Arumugam Nallanathan

We formulate a joint optimization problem of UAV deployment, caching placement and user association for maximizing QoE of users, which is evaluated by mean opinion score (MOS).

Single-Layer Graph Convolutional Networks For Recommendation

no code implementations7 Jun 2020 Yue Xu, Hao Chen, Zengde Deng, Junxiong Zhu, Yanghua Li, Peng He, Wenyao Gao, Wenjun Xu

The results verify that the proposed model outperforms existing GCN models considerably and yields up to a few orders of magnitude speedup in training, in terms of the recommendation performance.

Recommendation Systems

Codebook-Based Beam Tracking for Conformal ArrayEnabled UAV MmWave Networks

no code implementations28 May 2020 Jinglin Zhang, Wenjun Xu, Hui Gao, Miao Pan, Zhu Han, Ping Zhang

Aiming to address the beam tracking difficulties, we propose to integrate the conformal array (CA) with the surface of each UAV, which enables the full spatial coverage and the agile beam tracking in highly dynamic UAV mmWave networks.

Policy Gradient from Demonstration and Curiosity

no code implementations22 Apr 2020 Jie Chen, Wenjun Xu

In this work, an integrated policy gradient algorithm was proposed to boost exploration and facilitate intrinsic reward learning from only limited number of demonstrations.

Reinforcement Learning

Scalable Learning Paradigms for Data-Driven Wireless Communication

no code implementations1 Mar 2020 Yue Xu, Feng Yin, Wenjun Xu, Chia-Han Lee, Jia-Ru Lin, Shuguang Cui

The marriage of wireless big data and machine learning techniques revolutionizes the wireless system by the data-driven philosophy.

Philosophy

Voting-Based Multi-Agent Reinforcement Learning for Intelligent IoT

no code implementations2 Jul 2019 Yue Xu, Zengde Deng, Mengdi Wang, Wenjun Xu, Anthony Man-Cho So, Shuguang Cui

The recent success of single-agent reinforcement learning (RL) in Internet of things (IoT) systems motivates the study of multi-agent reinforcement learning (MARL), which is more challenging but more useful in large-scale IoT.

Decision Making Multi-agent Reinforcement Learning +3

Load Balancing for Ultra-Dense Networks: A Deep Reinforcement Learning Based Approach

no code implementations3 Jun 2019 Yue Xu, Wenjun Xu, Zhi Wang, Jia-Ru Lin, Shuguang Cui

Third, this work proposes an offline-evaluation based safeguard mechanism to ensure that the online system can always operate with the optimal and well-trained MLB policy, which not only stabilizes the online performance but also enables the exploration beyond current policies to make full use of machine learning in a safe way.

Deep Reinforcement Learning reinforcement-learning +1

Wireless Traffic Prediction with Scalable Gaussian Process: Framework, Algorithms, and Verification

no code implementations13 Feb 2019 Yue Xu, Feng Yin, Wenjun Xu, Jia-Ru Lin, Shuguang Cui

First, to the best of our knowledge, this paper is the first to empower GP regression with the alternating direction method of multipliers (ADMM) for parallel hyper-parameter optimization in the training phase, where such a scalable training framework well balances the local estimation in baseband units (BBUs) and information consensus among BBUs in a principled way for large-scale executions.

regression Traffic Prediction

Differentially Private ADMM for Distributed Medical Machine Learning

no code implementations7 Jan 2019 Jiahao Ding, Xiaoqi Qin, Wenjun Xu, Yanmin Gong, Chi Zhang, Miao Pan

Due to massive amounts of data distributed across multiple locations, distributed machine learning has attracted a lot of research interests.

BIG-bench Machine Learning

Multi-Antenna Channel Interpolation via Tucker Decomposed Extreme Learning Machine

no code implementations26 Dec 2018 Han Zhang, Bo Ai, Wenjun Xu, Li Xu, Shuguang Cui

Channel interpolation is an essential technique for providing high-accuracy estimation of the channel state information (CSI) for wireless systems design where the frequency-space structural correlations of multi-antenna channel are typically hidden in matrix or tensor forms.

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