Arlen Dumas

PhD student • University of Rhode Island • ASSET Lab

I research smartphone-based digital phenotyping, using passive smartphone sensors to model health-related behaviors and outcomes. I develop applied machine learning systems that emphasize interpretability and methodological rigor to improve health outcomes for marginalized populations.

Arlen Dumas
Focus Digital phenotyping • Wearables • ML
Location Rhode Island, USA

About

I am a fourth-year Computer Science PhD student at the University of Rhode Island and a member of the ASSET Lab led by Krishna Venkatasubramanian. My research focuses on smartphone-based digital phenotyping, which uses passive smartphone and wearable sensor data to model health-related behaviors and outcomes.

I develop applied machine learning systems that leverage multimodal sensing streams, including accelerometer, GPS, communication logs, and wearable physiological signals, into clinically meaningful behavioral representations. My work emphasizes interpretability and methodological rigor to ensure that models not only perform well but also provide transparent and actionable insights that improve health outcomes.

What I do

  • Smartphone-based digital phenotyping
  • Context-aware adherence modeling
  • Wearable biosensing & signal processing
  • Applied ML for health equity
  • Reproducible, transparent research

Projects

Improving Prophylaxis Adherence using Digital Phenotyping (SmartSteps)

Primary project

Developing SmartSteps, a translatable model that adds context-awareness to adherence data and anticipates potential PrEP nonadherence to deliver corrective feedback before nonadherence events occur.

Led by Dr. Peter R. Chai (Brigham and Women’s Hospital & Harvard Medical School) in collaboration with Brigham and Women’s Hospital and Fenway Health. Funded by an NIH subaward via Brigham and Women’s Hospital.

Wearable Biosensor-Based Opioid Abuse Treatment Management

Secondary project

Developing wearable physiological sensing methods to detect medication non-adherence during medication-assisted treatment for opioid use disorder, reducing relapse risk by identifying non-adherence early.

Funded by an NIH NIBIB R01 grant.

Publications

Selected publications (authored/co-authored by Arlen Dumas).

In press JMIR

Smartphone-Based Digital Phenotyping Across Health Conditions: A Scoping Review

Arlen Dumas, Joanne Hokayem, Georgia Goodman, Krishna Venkatasubramanian, Peter R. Chai.

2024 Journal of Medical Toxicology

Smartphone and Wearable Device-based Digital Phenotyping to Understand Substance Use and its Syndemics

J. S. Lee, E. Browning, J. Hokayem, H. Albrechta, G. Goodman, K. Venkatasubramanian, A. Dumas, S. Carreiro, C. O’Cleirigh, P. R. Chai, et al.

2024 PLOS Digital Health

Acceptance of Digital Phenotyping Linked to a Digital Pill System to Measure PrEP Adherence Among Men who have Sex with Men with Substance Use

H. Albrechta, G. R. Goodman, E. Oginni, Y. Mohamed, K. Venkatasubramanian, A. Dumas, S. Carreiro, J. S. Lee, T. R. Glynn, C. O'Cleirigh, et al.

2024 HICSS

Informing Acceptability and Feasibility of Digital Phenotyping for Personalized HIV Prevention Among Marginalized Populations Presenting to the Emergency Department

T. R. Glynn, S. Khanna, M. A. Hasdianda, J. Tom, K. Venkatasubramanian, A. Dumas, C. O'Cleirigh, C. E. Goldfine, P. R. Chai.

Updates

  • 2026 Paper in press at JMIR: “Smartphone-Based Digital Phenotyping Across Health Conditions: A Scoping Review.”
  • 2025 Ongoing: SmartSteps project developing context-aware adherence interventions for PrEP nonadherence.
  • 2024 Publications in Journal of Medical Toxicology, PLOS Digital Health, and HICSS.

Contact