My research focuses on machine learning, signal processing, data mining, and ubiquitous computing with applications in location intelligence, occupancy sensing, location-based and context-aware service, smart buildings, Indoor Positioning System (IPS) and Internet of Things (IoT).

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News

  • Our paper "Consensus Adversarial Domain Adaptation" has been accepted at AAAI 2019
  • Our paper "WiFi-enabled device-free human activity recognition via deep learning" has been published in Energy and Buildings
  • Our paper "Unsupervised WiFi-enabled IoT Device-User Association for Personalized Location-based Service" has been published in IEEE Internet of Things Journal
  • Our paper "Device-Free Occupancy Detection and Crowd Counting in Smart Buildings with WiFi-enabled IoT" has been published in Energy and Buildings
  • Our paper "Device-free Occupancy Sensing Platform using WiFi-enabled IoT Devices for Smart Homes" has been published in IEEE Internet of Things Journal
  • Our two papers on WiFi occupancy sensing, as well as outliers detection in multiple time series have been accepted at AAAI 2018
  • Our WiFi-based Non-intrusive Indoor Positioning System (WinIPS) has been fully operational in CREST Lab, Cory Hall, UC Berkeley


Selected Publications: Journals Articles

  1. IOTJ Unsupervised WiFi-enabled IoT Device-User Association for Personalized Location-based Service
    Han Zou, Yuxun Zhou, Jianfei Yang, Costas Spanos
    IEEE Internet of Things Journal, 2018 (IF=5.863) [PDF]
  2. ENB Towards occupant activity driven smart buildings via WiFi-enabled IoT devices and deep learning
    Han Zou, Yuxun Zhou, Jianfei Yang, Costas Spanos
    Energy and Buildings, 2018 (IF=4.457) [PDF]
  3. ENB Device-Free Occupancy Detection and Crowd Counting in Smart Buildings with WiFi-enabled IoT
    Han Zou, Yuxun Zhou, Jianfei Yang, Costas Spanos
    Energy and Buildings, 2018 (IF=4.457) [PDF]
  4. TWC WinIPS: WiFi-Based Non-Intrusive Indoor Positioning System with Online Radio Map Construction and Adaptation
    Han Zou, Ming Jin, Hao Jiang, Lihua Xie, Costas Spanos
    IEEE Transactions on Wireless Communications, 2017 (IF=4.951) [PDF]
  5. TWC A Robust Indoor Positioning System based on the Procrustes Analysis and Weighted Extreme Learning Machine
    Han Zou, Baoqi Huang, Xiaoxuan Lu, Hao Jiang, Lihua Xie
    IEEE Transactions on Wireless Communications, 2016 (IF=4.951) [PDF]
  6. ENB WinLight: A WiFi-based Occupancy-driven Lighting Control System for Smart Building
    Han Zou, Yuxun Zhou, Hao Jiang, Szu-Cheng Chien, Lihua Xie, Costas Spanos
    Energy and Buildings, 2018 (IF=4.457) [PDF]
  7. ENB Non-intrusive Occupancy Sensing in Commercial Buildings
    Han Zou, Hao Jiang, Jianfei Yang, Lihua Xie, Costas Spanos
    Energy and Buildings, 2018 (IF=4.457) [PDF]
  8. Sensors BlueDetect: An iBeacon-Enabled Scheme for Accurate and Energy-Efficient Indoor-Outdoor Detection and Seamless Location-Based Service
    Han Zou, Hao Jiang, Yiwen Luo, Janjie Zhu, Xiaoxuan Lu, Lihua Xie
    Sensors, 2016 (IF=2.475) [PDF]
  9. Sensors A Fast and Precise Indoor Localization Algorithm based on an Online Sequential Extreme Learning Machine
    Han Zou, Xiaoxuan Lu, Hao Jiang, Lihua Xie
    Sensors, 2015 (IF=2.475) [PDF]
  10. IOTJ Robust Device-free Occupancy Sensing Platform using WiFi-enabled IoT Devices for Smart Homes
    Jianfei Yang, Han Zou, Hao Jiang, Lihua Xie
    IEEE Internet of Things Journal, 2018 (IF=5.863) [PDF]
  11. T-CYB Robust Extreme Learning Machine with its Application to Indoor Positioning
    Xiaoxuan Lu, Han Zou, Hongming Zhou, Lihua Xie, Guang-Bin Huang
    IEEE Transactions on Cybernetics, 2016 (IF=8.803) [PDF]
  12. T-TVT CareFi: Sedentary Behavior Monitoring System via Commodity WiFi Infrastructures
    Jianfei Yang, Han Zou, Hao Jiang, Lihua Xie
    IEEE Transactions on Vehicular Technology, 2018 (IF=4.432) [PDF]
  13. Sensors Fusion of WiFi, Smartphone Sensors and Landmarks using the Kalman Filter for Indoor Localization
    Zhenghua Chen, Han Zou, Hao Jiang, Qingchang Zhu, Yeng Chai Soh, Lihua Xie
    Sensors, 2016 (IF=2.475) [PDF]
  14. Sensors Building-in-Briefcase: A Rapidly-Deployable Environmental Sensor Suite for the Smart Building
    Kevin Weekly, Ming Jin, Han Zou, Christopher Hsu, Chris Soyza, Alexandre Bayen, Costas Spanos
    Sensors, 2018 (IF=2.475) [PDF]
  15. Sensors MapSentinel: Can the Knowledge of Space Use Improve Indoor Tracking Further?
    Ruoxi Jia, Ming Jin, Han Zou, Yigitcan Yesilata, Lihua Xie, Costas Spanos
    Sensors, 2016 (IF=2.475) [PDF]
  16. IMWUT SugarMate: Non-intrusive Blood Glucose Monitoring with Smartphones
    Weixi Gu, Yuxun Zhou, Zimu Zhou, Xi Liu, Han Zou, Pei Zhang, Costas Spanos, Lin Zhang
    ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT), 2018 [PDF]
  17. US Platform and Algorithm Development for a RFID-based Indoor Positioning System
    Han Zou, Lihua Xie, Qing-Shan Jia, Hengtao Wang
    Unmanned Systems, 2014 [PDF]

Selected Publications: Conference Proceedings

  1. AAAI'19 Consensus Adversarial Domain Adaptation
    Han Zou, Yuxun Zhou, Jianfei Yang, Huihan Liu, Hari Prasanna Das, Costas Spanos
    AAAI Conference on Artificial Intelligence, 2019 [PDF]
  2. AAAI'18 WiFi-based Human Identification via Convex Tensor Shapelet Learning
    Han Zou, Yuxun Zhou, Jianfei Yang, Weixi Gu, Lihua Xie, Costas Spanos
    AAAI Conference on Artificial Intelligence, 2018 [PDF]
  3. AAAI'18 Non-Parametric Outliers Detection in Multiple Time Series A Case Study: Power Grid Data Analysis
    Yuxun Zhou, Han Zou, Reza Arghandeh, Weixi Gu, Costas Spanos
    AAAI Conference on Artificial Intelligence, 2018 [PDF]
  4. IEEE ICC'18 DeepSense: Device-free Human Activity Recognition via Autoencoder Long-term Recurrent Convolutional Network
    Han Zou, Yuxun Zhou, Jianfei Yang, Hao Jiang, Lihua Xie, Costas Spanos
    IEEE International Conference on Communications, 2018 [PDF]
  5. IEEE ICMLA'17 Multiple Kernel Representation Learning for WiFi-based Human Activity Recognition
    Han Zou, Yuxun Zhou, Jianfei Yang, Hao Jiang, Lihua Xie, Costas Spanos
    IEEE International Conference On Machine Learning And Application, 2017 [PDF]
  6. IEEE GLOBECOM'17 FreeCount: Device-Free Crowd Counting with Commodity WiFi
    Han Zou, Yuxun Zhou, Jianfei Yang, Weixi Gu, Lihua Xie, Costas Spanos
    IEEE Global Communications Conference, 2017 [PDF]
  7. IEEE WCNC'17 Adaptive Localization in Dynamic Indoor Environments by Transfer Kernel Learning
    Han Zou, Yuxun Zhou, Hao Jiang, Baoqi Huang, Lihua Xie, Costas Spanos
    IEEE Wireless Communications and Networking Conference, 2017 [PDF]
  8. IEEE GLOBECOM'16 Consensus-Based Parallel Extreme Learning Machine for Indoor Localization
    Han Zou, Zhirong Qiu, Hao Jiang, Lihua Xie, Yiguang Hong
    IEEE Global Communications Conference, 2016 [PDF]
  9. IEEE WCNC'16 Standardizing Location Fingerprints Across Heterogeneous Mobile Devices for Indoor Localization
    Han Zou, Baoqi Huang, Xiaoxuan Lu, Hao Jiang, Lihua Xie
    IEEE Wireless Communications and Networking Conference, 2016 [PDF]
  10. IEEE SECON'17 Workshop Freedetector: Device-free Occupancy Detection with Commodity WiFi
    Han Zou, Yuxun Zhou, Jianfei Yang, Weixi Gu, Lihua Xie, Costas Spanos
    IEEE International Conference on Sensing, Communication and Networking Workshops, 2017 [PDF]
  11. IEEE INFOCOM'16 Workshop WinIPS: WiFi-based Non-intrusive IPS for Online Radio Map Construction
    Han Zou, Ming Jin, Hao Jiang, Lihua Xie, Costas Spanos
    IEEE International Conference on Computer Communications Workshops, 2016 [PDF]
  12. ACM MobiCom'17 WiFi-based Device-Free Human Activity Recognition via Automatic Representation Learning: Poster
    Han Zou, Yuxun Zhou, Jianfei Yang, Weixi Gu, Lihua Xie, Costas Spanos
    ACM International Conference on Mobile Computing and Networking, 2017 [PDF]
  13. ACM MobiCom'16 A Transfer Kernel Learning Based Strategy for Adaptive Localization In Dynamic Indoor Environments: Poster
    Han Zou, Yuxun Zhou, Hao Jiang, Baoqi Huang, Lihua Xie, Costas Spanos
    ACM International Conference on Mobile Computing and Networking, 2016 [PDF]
  14. ACM UbiComp'16 Exploiting Cyclic Features of Walking for Pedestrian Dead Reckoning with Unconstrained Smartphones
    Baoqi Huang, Guodong Qi, Xiaokun Yang, Long Zhao, Han Zou
    ACM International Joint Conference on Pervasive and Ubiquitous Computing, 2016 [PDF]

Projects

WinIPS: WiFi-based Non intrusive Indoor Positioning System

Location-based Services Indoor Localization WiFi

We designed WinIPS, a novel non-intrusive (no App installation) WiFi-based indoor positioning system (IPS) with a user-friendly web interface for reliable indoor navigation and real-time occupancy sensing. WinIPS has been deployed and implemented in 11 distinct indoor environments with 95000 ft2 in U.S.A., Singapore, Taiwan and Germany.

WinLight: A WiFi-based occupancy-driven lighting control system for smart building

Location-based Services Indoor Localization Smart Home

We developed an occupancy-driven lighting control system, WinLight, that is able to turn on/off lights automatically based on the real-time location of the customer estimated by our WiFi-based IPS. Moreover, it adjusts the brightness level of each lamp according to customer's luminance preferences to realize personalized lighting comfort in smart home.

Seamless Indoor Outdoor Navigation

Location-based Services WiFi iBeacon

We developed a framework by integrating GPS (outdoor), iBeacon (semi-outdoor) and WiFi (indoor) for accurate and energy efficient indoor-outdoor detection with fast-response, and seamless navigation in all environments.

Indoor Navigation on Google Glass

Location-based Services Indoor Localization Wearable Device

We integrated our WiFi-based IPS to realize seamless indoor positioning and navigation services for customers with optimal path guidance on wearable devices such as Google Glass.


Patents

  • Intelligent IoT Device with Wireless-enabled Device-free Occupancy Sensing
    Han Zou, Costas Spanos, Yuxun Zhou
    US Patent Application: 62/742,111, 2018
  • WiFi-enabled Device-free Human Identification
    Han Zou, Costas Spanos, Yuxun Zhou, Jianfei Yang, Lihua Xie
    US Patent Application: 62/675,473, 2018
  • WiFi-enabled Device-free Gesture Recognition
    Han Zou, Costas Spanos, Yuxun Zhou, Jianfei Yang, Lihua Xie
    US Patent Application: 62/675,479, 2018
  • Unsupervised WiFi-enabled Device-User Association for Personalized Location-based Service
    Han Zou, Costas Spanos, Yuxun Zhou, Jianfei Yang
    US Patent Application: 62/675,485, 2018
  • Device-Free Sedentary Period Detection Using Commodity WiFi Signals
    Lihua Xie, Jianfei Yang, Han Zou, Hao Jiang
    US Patent Application: 62/716,266, 2018

Awards

  • CITRIS Seed Grant, 2018.
  • NVIDIA GPU Grant, 2018.
  • Microsoft Indoor Localization Competition 3rd Place Award, 2014.
  • Microsoft Indoor Localization Competition 4th Place Award, 2015.
  • SinBerBEST Graduate Scholarship, National Research Foundation, Singapore, 2012-2016.

Professional Service

Journal Reviewer

  • IEEE/ACM Transactions on Networking, IEEE Transactions on Wireless Communication, ACM Interactive, Mobile, Wearable and Ubiquitous Technologies (ACM IMWUT), Information Sciences, Energy and Buildings, IEEE Transactions on Cybernetics, IEEE Wireless Communications Letters, IEEE Internet of Things Journal

Technical Program Committee

  • ACM CHI [2019], IEEE GLOBECOM [2016], IEEE CASE [2015], IEEE ICCA [2014, 2016, 2017], SmartGridComm [2016]