Xin Liu

Orcid: 0000-0002-9279-5386

Affiliations:
  • Google, USA
  • University of Washington, Seattle, WA, USA (PhD 2023)
  • University of Massachusetts, College of Information and Computer Sciences, Amherst, MA, USA (former)


According to our database1, Xin Liu authored at least 69 papers between 2017 and 2025.

Collaborative distances:

Timeline

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Bibliography

2025
Contact Sensors to Remote Cameras: Quantifying Cardiorespiratory Coupling in High-Altitude Exercise Recovery.
CoRR, August, 2025

"What's Up, Doc?": Analyzing How Users Seek Health Information in Large-Scale Conversational AI Datasets.
CoRR, June, 2025

Tiered Agentic Oversight: A Hierarchical Multi-Agent System for AI Safety in Healthcare.
CoRR, June, 2025

Non-Contact Health Monitoring During Daily Personal Care Routines.
CoRR, June, 2025

SensorLM: Learning the Language of Wearable Sensors.
CoRR, June, 2025

RADAR: Benchmarking Language Models on Imperfect Tabular Data.
CoRR, June, 2025

LSM-2: Learning from Incomplete Wearable Sensor Data.
CoRR, June, 2025

BehaviorSFT: Behavioral Token Conditioning for Clinical Agents Across the Proactivity Spectrum.
CoRR, May, 2025

VocalAgent: Large Language Models for Vocal Health Diagnostics with Safety-Aware Evaluation.
CoRR, May, 2025

Passive Measurement of Autonomic Arousal in Real-World Settings.
CoRR, April, 2025

A Scalable Framework for Evaluating Health Language Models.
CoRR, March, 2025

Medical Hallucinations in Foundation Models and Their Impact on Healthcare.
CoRR, March, 2025

Passive Heart Rate Monitoring During Smartphone Use in Everyday Life.
CoRR, March, 2025

Camera Measurement of Blood Oxygen Saturation.
CoRR, March, 2025

Estimating Blood Pressure with a Camera: An Exploratory Study of Ambulatory Patients with Cardiovascular Disease.
CoRR, March, 2025

BIG-Bench Extra Hard.
CoRR, February, 2025


Promoting Prosociality via Micro-acts of Joy: A Large-Scale Well-Being Intervention Study.
Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems, 2025

Substance over Style: Evaluating Proactive Conversational Coaching Agents.
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 2025


2024
From Classification to Clinical Insights: Towards Analyzing and Reasoning About Mobile and Behavioral Health Data With Large Language Models.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., May, 2024

Scaling Wearable Foundation Models.
CoRR, 2024

Evidence of Cognitive Deficits andDevelopmental Advances in Generative AI: A Clock Drawing Test Analysis.
CoRR, 2024

The Cognitive Capabilities of Generative AI: A Comparative Analysis with Human Benchmarks.
CoRR, 2024

WeatherQA: Can Multimodal Language Models Reason about Severe Weather?
CoRR, 2024

Towards a Personal Health Large Language Model.
CoRR, 2024

Transforming Wearable Data into Health Insights using Large Language Model Agents.
CoRR, 2024

Recent Advances, Applications, and Open Challenges in Machine Learning for Health: Reflections from Research Roundtables at ML4H 2023 Symposium.
CoRR, 2024

Demographic Bias of Expert-Level Vision-Language Foundation Models in Medical Imaging.
CoRR, 2024

Motion Matters: Neural Motion Transfer for Better Camera Physiological Measurement.
Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision, 2024

BigSmall: Efficient Multi-Task Learning for Disparate Spatial and Temporal Physiological Measurements.
Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision, 2024

What Are the Odds? Language Models Are Capable of Probabilistic Reasoning.
Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing, 2024

Exploring and Characterizing Large Language Models for Embedded System Development and Debugging.
Proceedings of the Extended Abstracts of the CHI Conference on Human Factors in Computing Systems, 2024

2023
MMTSA: Multi-Modal Temporal Segment Attention Network for Efficient Human Activity Recognition.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., September, 2023

Towards Accessible, Equitable, Generalizable and Useful Camera Health Sensing
PhD thesis, 2023

Enabling Real-Time On-Chip Audio Super Resolution for Bone-Conduction Microphones.
Sensors, 2023

ALPHA: AnomaLous Physiological Health Assessment Using Large Language Models.
CoRR, 2023

Training Robust Deep Physiological Measurement Models with Synthetic Video-based Data.
CoRR, 2023

Large Language Models are Few-Shot Health Learners.
CoRR, 2023

Motion Matters: Neural Motion Transfer for Better Camera Physiological Sensing.
CoRR, 2023

EfficientPhys: Enabling Simple, Fast and Accurate Camera-Based Cardiac Measurement.
Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision, 2023

rPPG-Toolbox: Deep Remote PPG Toolbox.
Proceedings of the Advances in Neural Information Processing Systems 36: Annual Conference on Neural Information Processing Systems 2023, 2023

SimPer: Simple Self-Supervised Learning of Periodic Targets.
Proceedings of the Eleventh International Conference on Learning Representations, 2023

MMPD: Multi-Domain Mobile Video Physiology Dataset.
Proceedings of the 45th Annual International Conference of the IEEE Engineering in Medicine & Biology Society, 2023

2022
Using High-Fidelity Avatars to Advance Camera-Based Cardiac Pulse Measurement.
IEEE Trans. Biomed. Eng., 2022

GLOBEM: Cross-Dataset Generalization of Longitudinal Human Behavior Modeling.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., 2022

MobilePhys: Personalized Mobile Camera-Based Contactless Physiological Sensing.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., 2022

MMTSA: Multimodal Temporal Segment Attention Network for Efficient Human Activity Recognition.
CoRR, 2022

Deep Physiological Sensing Toolbox.
CoRR, 2022

GLOBEM Dataset: Multi-Year Datasets for Longitudinal Human Behavior Modeling Generalization.
Proceedings of the Advances in Neural Information Processing Systems 35: Annual Conference on Neural Information Processing Systems 2022, 2022

SCAMPS: Synthetics for Camera Measurement of Physiological Signals.
Proceedings of the Advances in Neural Information Processing Systems 35: Annual Conference on Neural Information Processing Systems 2022, 2022

Federated Remote Physiological Measurement with Imperfect Data.
Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops, 2022

2021
SplitSR: An End-to-End Approach to Super-Resolution on Mobile Devices.
Proc. ACM Interact. Mob. Wearable Ubiquitous Technol., 2021

Enabling Real-time On-chip Audio Super Resolution for Bone Conduction Microphones.
CoRR, 2021

Camera-Based Physiological Sensing: Challenges and Future Directions.
CoRR, 2021

EfficientPhys: Enabling Simple, Fast and Accurate Camera-Based Vitals Measurement.
CoRR, 2021

Learning Higher-Order Dynamics in Video-Based Cardiac Measurement.
CoRR, 2021

Online Mobile App Usage as an Indicator of Sleep Behavior and Job Performance.
Proceedings of the WWW '21: The Web Conference 2021, 2021

Beat-to-Beat Cardiac Pulse Rate Measurement From Video.
Proceedings of the IEEE/CVF International Conference on Computer Vision Workshops, 2021

Synthetic Data for Multi-Parameter Camera-Based Physiological Sensing.
Proceedings of the 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society, 2021

MetaPhys: few-shot adaptation for non-contact physiological measurement.
Proceedings of the ACM CHIL '21: ACM Conference on Health, 2021

HulaMove: Using Commodity IMU for Waist Interaction.
Proceedings of the CHI '21: CHI Conference on Human Factors in Computing Systems, 2021

2020
Advancing Non-Contact Vital Sign Measurement using Synthetic Avatars.
CoRR, 2020

MetaPhys: Unsupervised Few-Shot Adaptation for Non-Contact Physiological Measurement.
CoRR, 2020

Multi-Task Temporal Shift Attention Networks for On-Device Contactless Vitals Measurement.
Proceedings of the Advances in Neural Information Processing Systems 33: Annual Conference on Neural Information Processing Systems 2020, 2020

2019
The Use of a Finger-Worn Accelerometer for Monitoring of Hand Use in Ambulatory Settings.
IEEE J. Biomed. Health Informatics, 2019

A Wearable RFID System to Monitor Hand Use for Individuals with Upper Limb Paresis.
Proceedings of the 16th IEEE International Conference on Wearable and Implantable Body Sensor Networks, 2019

2018
Finger-Worn Sensors for Accurate Functional Assessment of the Upper Limbs in Real-World Settings.
Proceedings of the 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2018

2017
A Novel Finger-Worn Sensor for Ambulatory Monitoring of Hand Use.
Proceedings of the Second IEEE/ACM International Conference on Connected Health: Applications, 2017


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