张蕾 副教授 硕士生导师,毕业于美国奥本大学计算机系,曾在美国马里兰大学分校任助理教授 |
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办公地点:天津大学北洋园校区55-B525 | |
E-mail:lzhang@tju.edu.cn |
研究方向
- 基于无线Wi-Fi的行为感知与识别
- 大语言模型
- 基于行为特征的身份认证
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人的活动会引起无线Wi-Fi信号传播路径的改变,这些变化可以通过物理层的信道状态信息(Channl Static Information)反映。通过对采集到的无线信道状态信息进行分析,实现实时的,无需携带特殊的设备的动作及行为细粒度的检测。该检测过程有效利用常用信号处理方法配合数据挖掘的算法。该研究方向是当今物联网及移动计算领域的热点问题。可以广泛应用于室内定位、安全监控、针对老人和小孩的家庭医疗监护、新型人机交互等。如左图发射端(Access points)发射无线信号,传输的多路径信号经过运动的人体、地面、天花板等反射被接收端(Monitoring points)接收,经过对接收到的信道状态信息的一系列智能化分析,可最终识别人的动作、姿势等。 |
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在自然语言处理领域,大语言模型(Large Language Model, LLM)通过深度学习算法,在海量文本数据上进行训练,具备了对复杂语言模式的理解与生成能力。它可以应用于多种任务,如机器翻译、对话系统、文本生成和情感分析等。当前,基于Transformer架构的大语言模型如GPT、BERT等,已经显著提升了自然语言处理的效果。通过不断优化模型结构和训练方法,我们正在探索如何让大语言模型更好地理解上下文,提高推理能力,并且在多个领域实现更广泛的应用。 |
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人的行为,如手势、呼吸、步态等都携带与特定人相关的特征,该特征往往被用来进行用户身份认证。基于非接触感知设备的身份认证在智能家居、智慧医疗等领域得到广泛应用。但是存在着无线信号受噪声干扰严重,严重影响身份认证结果。我们正在探索如何降低噪声,在提升认证准确性的同时提高系统的鲁棒性和泛化性。 |
主持科研项目
- 天津市自然科学基金面上项目
- 国家自然科学基金面上基金
- 科技部重大专项子课题
- 国家自然科学基金青年基金
- 科技部仪器重大专项子课题
学术兼职
- 中国计算机学会物联网专委会执行委员、普适计算专委会执行委员
- IEEE 会员, CCF 会员,ACM会员
代表性论文
- Lei Zhang,Yazhou Ma,Mingzi Zuo, Zhen Ling, Changyu Dong, Guangquan Xu, Lin Shu, Xiaochen Fan, Qian Zhang*, Toward Cross-environment Continuous Gesture User Authentication with Commercial Wi-fi, IEEE Transactions on Networking, 2025, 33(4): 1900-1915.(中国计算机学会 A 类期刊), *通信作者
- Lei Zhang,Haoran Ning,Jiaxin Tang, Zhenxiang Chen, Yaping Zhong, Yahong Han*, WiViPose: a Video-aided Wi-fi Framework for Environment-independent 3D Human Pose Estimation, IEEE Transactions on Multimedia, 2025, 27: 5225-5240.(中科院1区), *通信作者
- Lei Zhang, Yunzhe Jiang, Yazhou Ma, Shiwen Mao, Wenyuan Huang, Zhiyong Yu, Xiao Zheng, Lin Shu, Xiaochen Fan, Guangquan Xu, Changyu Dong*, Toward Robust and Effective Behavior Based User Authentication with Pff-the-shelf Wi-fi, IEEE Transactions on Information Forensics and Security, 2024, 19: 8731-8746, (中国计算机学会 A 类期刊), *通信作者
- Lei Zhang; Yazhou Ma; Xiaojie Fan; Xiaochen Fan; Yonggang Zhang; Xianyi Chen; Daqing Zhang*, Wi-Diag: Robust Multi-subject Abnormal Gait Diagnosis with Commodity Wi-Fi, IEEE Internet of Things Journal,VOL. 11, NO. 3, pp. 4362-4376, 2023(中科院1区), *通信作者
- Lei Zhang; Qingyang Chen; Zhilei Liu, Talking Head Generation for Media Interaction System with Feature Disentanglement, In the proceeding of IEEE 28th International Conference on Parallel and Distributed Systems (ICPADS 2022), 10-12 January, 2023, Nanjing, China (中国计算机学会 C 类会议)
- Lei Zhang; Xu Li; Kaichen Tang; Yunzhe Jiang; Liu Yang*; Yonggang Zhang; Xianyi Chen, FS-Net: LiDAR-Camera Fusion with Matched Scale for 3D Object Detection in Autonomous Driving, IEEE Transactions on Intelligent Transportation Systems,VOL. 24, NO. 11, pp. 12154-12165, 2023 (中国计算机学会 B 类期刊), *通信作者
- Lei Zhang, Wenyuan Huang, Xiaoxia Jia, Xiaojie Fan, Xiaochen Fan, Liangyi Gong, Wenyuan Tao, Shiwen Mao*, Wi-Gym: Gymnastics Activity Assessment Using Commodity Wi-Fi, IEEE Internet of Things Journal, 2022, VOL.9, ISSUE.23, p. 24051 - 24064, (中科院1区), *通信作者
- Zhenyu Zhang, Lei Zhang, Dingqi Yang, Liu Yang*, KRAN: Knowledge Refining Attention Network for Recommendation, ACM Transactions on Knowledge Discovery from Data, 2022, VOL.16, ISSUE.2, p.39:1-39:20, (中国计算机学会 B 类期刊), *通信作者
- Lei Zhang, Cong Wang, Daqing Zhang*, Wi-PIGR: Path Independent Gait Recognition with Commodity Wi-Fi, IEEE Transactions on Mobile Computing, 2022, VOL.21, ISSUE.9, p.3414 - 3427 (中国计算机学会 A 类期刊), *通信作者
- Lei Zhang, Yueqiang Zhang, Xiaolong Zheng, Beibei Wang, Liu Yang*, WiCrowd: Counting The Directional Crowd with A Single Wireless Link, IEEE Internet of Things Journal, 2021, VOL.8, ISSUE.10: p. 8644 - 8656, (中科院1区), *通信作者
- Lei Zhang, YiXiang Zhang, *XiaoLong Zheng, WiSign: Ubiquitous American Sign Language Recognition Using Commercial Wi-Fi Devices, ACM Transactions on Intelligent Systems and Technology,2020,VOL.11, ISSUE.3, NO. 31: p. 1-24 ( 中国计算机学会 B 类期刊) *通信作者
- Lei Zhang, Cong Wang, Maode Ma, and *Daqing Zhang, WiDIGR: Direction-Independent Gait Recognition System using Commercial Wi-Fi Devices, IEEE Internet of Things Journal, 2020. VOL.7, NO. 2: p. 1178 - 1191 (中科院1区), *通信作者
- Lei Zhang, Zhijun Zhang, Jufang He, Zhenyu Zhang, UR: A User-based Collaborative Filtering Recommendation System Based on Trust Mechanism and Time Weighting, In the proceeding of IEEE 25th International Conference on Parallel and Distributed Systems, 4-6 December, 2019, Tianjin, China(中国计算机学会 C 类会议 长文)
- Meiguang Liu, *Lei Zhang, Panlong Yang, Liangfu Lu, Liangyi Gong,Wi-Run: Device-Free Step Estimation System with Commodity Wi-Fi,Journal of Network and Computer Applications,已接收(中科院 2区),*通讯作者
- Lei Zhang, Zhirui Wang, Liu Yang, Commercial Wi-Fi Based Fall Detection with Environment Influence Mitigation, In the proceeding of IEEE International Conference on Sensing, Communication and Networking(SECON 2019), 10-13 June 2019, Boston, USA (中国计算机学会 B 类会议 长文)
- Lei Zhang, Xuan Liu, Yidi Cao, Bin Wu, O-Recommend: An Optimized User-Based Collaborative Filtering Recommendation System, In the proceeding of IEEE 24th International Conference on Parallel and Distributed Systems, December 11 - 13 2018, Sentosa, Singapore(中国计算机学会 C 类会议 长文)
- Lei Zhang, Meiguang Liu, Liangfu Lu, Liangyi Gong, Wi-Run: Multi-Runner Step Estimation Using Commodity Wi-Fi, In the proceeding of IEEE International Conference on Sensing, Communication and Networking(SECON 2018), 11-13 June 2018, Hong Kong, China (中国计算机学会 B 类会议 长文)
- Ying Hu, Yichen Yang, Zhonghai Fang, Yan-Shi Hu, *Lei Zhang, *Ju Wang, Detecting pathway relationship in the context of human protein-protein interaction network and its application to Parkinson’s disease, Methods,2017 VOL.131: p.93-103 (中科院3区) *通信作者
- Jia Zeng, *Lei Zhang,Gaotao Shi, Tiegen Liu, Kun Liu, An ARIMA Based Real-time Monitoring and Warning Algorithm for the Abnormal Detection, In the proceeding of IEEE International Conference on Parallel and Distributed Systems, 15-17 December 2017, Shenzhen, China (中国计算机学会 C 类会议 长文) *通信作者
- YanShi Hu, Juncai Xin, Ying Hu, *Lei Zhang, Ju Wang, Analyzing the Genes Related to Alzheimer’s Disease via a Network and Pathway Based Approach, Alzheimer's Research & Therapy, 2017, VOL. 9, NO.29 (中科院1区) *通信作者
- Yanshi Hu, Zhenhua Pan, Ying Hu, *Lei Zhang, Ju Wang, Network and Pathway-Based Analyses of Genes Associated with Parkinson’s Disease, Molecular Neurobiology, 2017,VOL. 54, NO.6 (中科院2区) *通信作者
- Jie Xiao, Hong Wen, Bin Wu, Xiaohong Jiang, Pin-Han Ho, *Lei Zhang. Joint Design on DCN Placement and Survivable Cloud Service Provision over All-Optical Mesh Networks, IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 62, NO. 1, JAN 2014 (中科院2区) (中国计算机学会 B类期刊 ) *通信作者
- Jie Xiao, Bin Wu, Xiaohong Jiang, Achille Pattavina, Hong Wen, and *Lei Zhang. Scalable Data Center Network Architecture With Distributed Placement of Optical Switches and Racks. Journal of Optical Communications and Networking VOL. 6, NO. 3 MAR 2014 (中科院2区) *通信作者




