Dr. Hui Liu

Research Interests and Keywords

• Wearables

  • (Wireless) Body Sensor Network (WBSN/BSN)
  • Body Area Network
  • Inertial sensors and Inertial Measurement Unit (IMU)
  • Electromyography (EMG), electrogoniometers, and other sensors
  • Ubiquitous/pervasive computing

• Big Data

  • Multimodal data visualization
  • Statistical analysis
  • Organization, operation, and post-processing of big data acquisition
  • Automatic and semi-automatic segmentation and annotation
  • Open-source human activity dataset sharing CSL-SHARE

• Digital Signal Processing (DSP)

  • Multisensorial and multichannel biosignal processing
  • Preprocessing and feature extraction
  • Time series processing
  • Biosignals and user interfaces

• Machine Learning (ML) / Artificial Intelligence (AI)

  • Feature selection and feature space reduction
  • Early fusion and late fusion
  • Hidden Markov Model (HMM)
  • CNN, RNN, and ResNet
  • Model training, decoding, and evaluation

• Human Activity Recognition (HAR)

  • Human Activity Recognition Research Pipeline: HAR-Pipeline
  • Advanced human activity modeling: Motion Units
  • HAR Software development: Activity Signal Kit (ASK)
  • Real-time end-to-end HAR system: Activity Signal Kit Echtzeit-Decoder (ASKED)
  • On-the-fly plug-and-play HAR functionality: Activity Signal Kit Plug-And-PlAy (ASKPAPA)
  • Internal sensing and wearable computing for HAR

• Biomedical Engineering (BME)

  • Rehabilitation assistance
  • Arthritis and knee bandage
  • Mobile phone application for auxiliary medical care
  • Virtual Reality (VR) and Mixed Reality (MR) for BME

• Music Information Retrieval (MIR)

  • Feature extraction of melody pitch statistics
  • MIR-based amateur singing assistance
  • Joint processing of pitch statistics and audio signals