Yingjian Song@UGA

Work Experience:

• Signal Processing & ML Engineer,    Nocturnal.Inc,    Cambridge, MA,  Feb, 2025-Now

  • Designed and deployed real-time signal processing algorithms and TinyML inference pipelines on ARM Cortex-M embedded platforms :

    • Eye movement detection using the IR sensor

    • Body movement detection,  Edge double-tap detection, Head orientation tracking using IMU

    • Heart rate estimation, Inter-beat interval,  HRV analysis using PPG

    • SPO2 estimation algorithm using both IR and Red PPG

Research Interest:

• Smart Sensing on Human

• Sensor Data Analysis

• Deep learning and Signal Processing

• IoT, Ubiquitous Computing

Resume:

• CV-Yingjian Song 

Publication (First Author):

Published: 

•  Multi-Granularity Supervised Contrastive Learning with Online Adaptation for Contactless In-Bed Posture Classification

Yingjian Song, Haotian Xiang, Zixuan Zeng, Jiayu Chen, Yida Zhang, Zaid Farooq Pitafi, He Yang, Qin Lu, Xiang Zhang, Bradley G. Phillips, Fei Dou, WenZhan Song.

ACM IMWUT/UbiComp, 2025

• Self-Supervised Representation Learning and Temporal-Spectral Feature Fusion for Bed Occupancy Detection

Yingjian Song, Zaid Farooq Pitafi, Fei Dou, Jin Sun, Xiang Zhang, WenZhan Song

ACM IMWUT/UbiComp, 2024.

• Engagement-Free and Contactless Bed Occupancy and Vital Signs Monitoring

Yingjian Song, Bingnan Li, Dan Luo, Zaipeng Xie, Bradley G Phillips, Yuan Ke, Wenzhan Song

IEEE Internet of Things Journal (IoTJ), 2023

• Real-Time Continuous Blood Pressure Estimation with Contact-Free Bedseismogram

Yingjian Song, Bingnan Li, Dan Luo, Glenna S Brewster Glasgow, Bradley G Phillips, Yuan Ke, Wenzhan Song

ICC 2024-IEEE International Conference on Communications

• Attention Feature Fusion with Cluster Contrastive Learning for Snoring and Breath-Holding Detection Using Seismic Sensing 

Yingjian Song, Jiayu Chen, Yida Zhang, Zixuan Zeng, Zaid Farooq Pitafi, Bradley G.\ Phillips, Xiang Zhang, Wenzhan Song. 

IEEE International Conference on Pervasive Computing and Communications (PerCom), 2026

• Contactless Sleep Apnea Detection with Bodyseismography

Yingjian Song, Jiayu Chen, Yida Zhang, Zixuan Zeng, Zaid Farooq Pitafi, Bradley G.\ Phillips, Xiang Zhang, Fei Dou, Wenzhan Song. 

ACM IMWUT/Ubicomp, 2026

• SeatVitals: Geophone-Based Unobtrusive Vital Sign Monitoring for Office Environments

Yingjian Song, Jiayu Chen, Yida Zhang, Zixuan Zeng, Zaid Farooq Pitafi, Bradley G.Phillips, Xiang Zhang, Zaipeng Xie, Qin Lu, Fei Dou, Wenzhan Song. 

Computing in Cardiology (CinC),  2026