Publications

2024

1. PaPaGei: Open Foundation Models for Optical Physiological Signals (Under Review)

   Arvind Pillai, Dimitris Spathis, Fahim Kawsar, and 1 more author

   Short version to be presented at NeurIPS TSALM workshop, 2024

   Bib

   @article{pillai2024papagei,
     title = {PaPaGei: Open Foundation Models for Optical Physiological Signals (Under Review)},
     author = {Pillai, Arvind and Spathis, Dimitris and Kawsar, Fahim and Malekzadeh, Mohammad},
     journal = {Short version to be presented at NeurIPS TSALM workshop},
     year = {2024},
   }

2. UbiComp

   MindScape Study: Integrating LLM and Behavioral Sensing for Personalized AI-Driven Journaling Experiences (In Press)

   Subigya Nepal, Arvind Pillai, William Campbell, and 8 more authors

   Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, 2024

   Bib

   @article{nepal2024mindscape,
     title = {MindScape Study: Integrating LLM and Behavioral Sensing for Personalized AI-Driven Journaling Experiences (In Press)},
     author = {Nepal, Subigya and Pillai, Arvind and Campbell, William and Massachi, Talie and Heinz, Michael V and Kunwar, Ashmita and Choi, Eunsol Soul and Xu, Orson and Kuc, Joanna and Huckins, Jeremy and others},
     journal = {Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies},
     year = {2024},
   }

3. Clinical

   The role of borderline personality disorder traits in predicting longitudinal variability of major depressive symptoms among a sample of depressed adults

   Emily A Kline, Damien Lekkas, Anastasia Bryan, and 8 more authors

   Journal of Affective Disorders, 2024

   Bib PDF

   @article{kline2024role,
     title = {The role of borderline personality disorder traits in predicting longitudinal variability of major depressive symptoms among a sample of depressed adults},
     author = {Kline, Emily A and Lekkas, Damien and Bryan, Anastasia and Nemesure, Matthew D and Griffin, Tess Z and Collins, Amanda C and Price, George D and Heinz, Michael V and Nepal, Subigya and Pillai, Arvind and others},
     journal = {Journal of Affective Disorders},
     volume = {363},
     pages = {492--500},
     year = {2024},
     publisher = {Elsevier}
   }

4. Clinical

   From mood to use: Using ecological momentary assessments to examine how anhedonia and depressed mood impact cannabis use in a depressed sample

   Amanda C Collins, Damien Lekkas, Cara A Struble, and 8 more authors

   Psychiatry research, 2024

   Bib PDF

   @article{collins2024mood,
     title = {From mood to use: Using ecological momentary assessments to examine how anhedonia and depressed mood impact cannabis use in a depressed sample},
     author = {Collins, Amanda C and Lekkas, Damien and Struble, Cara A and Trudeau, Brianna M and Jewett, Abi D and Griffin, Tess Z and Nemesure, Matthew D and Price, George D and Heinz, Michael V and Nepal, Subigya and others},
     journal = {Psychiatry research},
     volume = {339},
     pages = {116110},
     year = {2024},
     publisher = {Elsevier}
   }

5. CHI

   MoodCapture: Depression Detection Using In-the-Wild Smartphone Images

   Subigya Nepal*, Arvind Pillai*, Weichen Wang, and 8 more authors

   In Proceedings of the CHI Conference on Human Factors in Computing Systems , 2024

   Bib PDF Video

   @inproceedings{nepal2024moodcapture,
     title = {MoodCapture: Depression Detection Using In-the-Wild Smartphone Images},
     author = {Nepal*, Subigya and Pillai*, Arvind and Wang, Weichen and Griffin, Tess and Collins, Amanda C and Heinz, Michael and Lekkas, Damien and Mirjafari, Shayan and Nemesure, Matthew and Price, George and others},
     booktitle = {Proceedings of the CHI Conference on Human Factors in Computing Systems},
     pages = {1--18},
     year = {2024},
   }

6. CHI EA

   Contextual AI Journaling: Integrating LLM and Time Series Behavioral Sensing Technology to Promote Self-Reflection and Well-being using the MindScape App

   Subigya Nepal, Arvind Pillai, William Campbell, and 8 more authors

   In Extended Abstracts of the CHI Conference on Human Factors in Computing Systems , 2024

   Bib PDF

   @inproceedings{nepal2024contextual,
     title = {Contextual AI Journaling: Integrating LLM and Time Series Behavioral Sensing Technology to Promote Self-Reflection and Well-being using the MindScape App},
     author = {Nepal, Subigya and Pillai, Arvind and Campbell, William and Massachi, Talie and Choi, Eunsol Soul and Xu, Xuhai and Kuc, Joanna and Huckins, Jeremy F and Holden, Jason and Depp, Colin and others},
     booktitle = {Extended Abstracts of the CHI Conference on Human Factors in Computing Systems},
     pages = {1--8},
     year = {2024},
   }

7. PerCom Magazine

   Social Isolation and Serious Mental Illness: The Role of Context-Aware Mobile Interventions

   Subigya Nepal*, Arvind Pillai*, Emma M Parrish, and 4 more authors

   IEEE Pervasive Computing, 2024

   Bib PDF

   @article{nepal2024social,
     title = {Social Isolation and Serious Mental Illness: The Role of Context-Aware Mobile Interventions},
     author = {Nepal*, Subigya and Pillai*, Arvind and Parrish, Emma M and Holden, Jason and Depp, Colin and Campbell, Andrew T and Granholm, Eric L},
     journal = {IEEE Pervasive Computing},
     year = {2024},
     publisher = {IEEE},
   }

8. UbiComp

   Capturing the College Experience: A Four-Year Mobile Sensing Study of Mental Health, Resilience and Behavior of College Students during the Pandemic

   Subigya Nepal, Wenjun Liu, Arvind Pillai, and 6 more authors

   Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, 2024

   Bib PDF

   @article{nepal2024capturing,
     title = {Capturing the College Experience: A Four-Year Mobile Sensing Study of Mental Health, Resilience and Behavior of College Students during the Pandemic},
     author = {Nepal, Subigya and Liu, Wenjun and Pillai, Arvind and Wang, Weichen and Vojdanovski, Vlado and Huckins, Jeremy F and Rogers, Courtney and Meyer, Meghan L and Campbell, Andrew T},
     journal = {Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies},
     volume = {8},
     number = {1},
     pages = {1--37},
     year = {2024},
     publisher = {ACM New York, NY, USA},
   }

9. Clinical

   Depressive symptoms as a heterogeneous and constantly evolving dynamical system: Idiographic depressive symptom networks of rapid symptom changes among persons with major depressive disorder.

   Matthew D Nemesure, Amanda C Collins, George D Price, and 7 more authors

   Journal of psychopathology and clinical science, 2024

   Bib PDF

   @article{nemesure2024depressive,
     title = {Depressive symptoms as a heterogeneous and constantly evolving dynamical system: Idiographic depressive symptom networks of rapid symptom changes among persons with major depressive disorder.},
     author = {Nemesure, Matthew D and Collins, Amanda C and Price, George D and Griffin, Tess Z and Pillai, Arvind and Nepal, Subigya and Heinz, Michael V and Lekkas, Damien and Campbell, Andrew T and Jacobson, Nicholas C},
     journal = {Journal of psychopathology and clinical science},
     volume = {133},
     number = {2},
     pages = {155},
     year = {2024},
     publisher = {American Psychological Association},
   }

10. UbiComp

    Investigating Generalizability of Speech-based Suicidal Ideation Detection Using Mobile Phones

    Arvind Pillai, Subigya Kumar Nepal, Weichen Wang, and 8 more authors

    Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, 2024

    Bib PDF

    @article{pillai2024investigating,
      title = {Investigating Generalizability of Speech-based Suicidal Ideation Detection Using Mobile Phones},
      author = {Pillai, Arvind and Nepal, Subigya Kumar and Wang, Weichen and Nemesure, Matthew and Heinz, Michael and Price, George and Lekkas, Damien and Collins, Amanda C and Griffin, Tess and Buck, Benjamin and others},
      journal = {Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies},
      volume = {7},
      number = {4},
      pages = {1--38},
      year = {2024},
      publisher = {ACM New York, NY, USA},
    }

2023

1. CHIL

   Rare Life Event Detection via Mobile Sensing Using Multi-Task Learning

   Arvind Pillai, Subigya Nepal, and Andrew Campbell

   In Conference on Health, Inference, and Learning , 2023

   Bib PDF

   @inproceedings{pillai2023rare,
     title = {Rare Life Event Detection via Mobile Sensing Using Multi-Task Learning},
     author = {Pillai, Arvind and Nepal, Subigya and Campbell, Andrew},
     booktitle = {Conference on Health, Inference, and Learning},
     pages = {279--293},
     year = {2023},
     organization = {PMLR},
   }

2022

1. UbiComp

   First-gen lens: Assessing mental health of first-generation students across their first year at college using mobile sensing

   Weichen Wang, Subigya Nepal, Jeremy F Huckins, and 8 more authors

   Proceedings of the ACM on interactive, mobile, wearable and ubiquitous technologies, 2022

   Bib PDF

   @article{wang2022first,
     title = {First-gen lens: Assessing mental health of first-generation students across their first year at college using mobile sensing},
     author = {Wang, Weichen and Nepal, Subigya and Huckins, Jeremy F and Hernandez, Lessley and Vojdanovski, Vlado and Mack, Dante and Plomp, Jane and Pillai, Arvind and Obuchi, Mikio and Dasilva, Alex and others},
     journal = {Proceedings of the ACM on interactive, mobile, wearable and ubiquitous technologies},
     volume = {6},
     number = {2},
     pages = {1--32},
     year = {2022},
     publisher = {ACM New York, NY, USA},
   }

2. sensors

   Accurate step count with generalized and personalized deep learning on accelerometer data

   Long Luu, Arvind Pillai, Halsey Lea, and 3 more authors

   Sensors, 2022

   Bib PDF

   @article{luu2022accurate,
     title = {Accurate step count with generalized and personalized deep learning on accelerometer data},
     author = {Luu, Long and Pillai, Arvind and Lea, Halsey and Buendia, Ruben and Khan, Faisal M and Dennis, Glynn},
     journal = {Sensors},
     volume = {22},
     number = {11},
     pages = {3989},
     year = {2022},
     publisher = {MDPI},
   }

3. medRxiv

   Machine Learning Enabled Non-invasive Diagnosis of Nonalcoholic Fatty Liver Disease and Assessment of Abdominal Fat from MRI Data

   Arvind Pillai, Kamen Bliznashki, Emmette Hutchison, and 3 more authors

   medRxiv, 2022

   Bib PDF

   @article{pillai2022machine,
     title = {Machine Learning Enabled Non-invasive Diagnosis of Nonalcoholic Fatty Liver Disease and Assessment of Abdominal Fat from MRI Data},
     author = {Pillai, Arvind and Bliznashki, Kamen and Hutchison, Emmette and Kumar, Chanchal and Challis, Benjamin and Patel, Mishal},
     journal = {medRxiv},
     pages = {2022--03},
     year = {2022},
     publisher = {Cold Spring Harbor Laboratory Press},
   }

4. arXiv

   A survey of passive sensing in the workplace

   Subigya Nepal, Gonzalo J Martinez, Arvind Pillai, and 8 more authors

   arXiv preprint arXiv:2201.03074, 2022

   Bib PDF

   @article{nepal2022survey,
     title = {A survey of passive sensing in the workplace},
     author = {Nepal, Subigya and Martinez, Gonzalo J and Pillai, Arvind and Saha, Koustuv and Mirjafari, Shayan and Swain, Vedant Das and Xu, Xuhai and Audia, Pino G and De Choudhury, Munmun and Dey, Anind K and others},
     journal = {arXiv preprint arXiv:2201.03074},
     year = {2022},
   }

2021

1. IEEE

   Accurate Step Count With Generalizable Deep Learning on Accelerometer Data

   Long Luu, Arvind Pillai, Halsey Lea, and 3 more authors

   In 2021 IEEE Intl Conf on Dependable, Autonomic and Secure Computing, Intl Conf on Pervasive Intelligence and Computing, Intl Conf on Cloud and Big Data Computing, Intl Conf on Cyber Science and Technology Congress (DASC/PiCom/CBDCom/CyberSciTech) , 2021

   Bib PDF

   @inproceedings{luu2021accurate,
     title = {Accurate Step Count With Generalizable Deep Learning on Accelerometer Data},
     author = {Luu, Long and Pillai, Arvind and Lea, Halsey and Buendia, Ruben and Khan, Faisal M and Dennis, Glynn},
     booktitle = {2021 IEEE Intl Conf on Dependable, Autonomic and Secure Computing, Intl Conf on Pervasive Intelligence and Computing, Intl Conf on Cloud and Big Data Computing, Intl Conf on Cyber Science and Technology Congress (DASC/PiCom/CBDCom/CyberSciTech)},
     pages = {192--196},
     year = {2021},
     organization = {IEEE},
   }

2019

1. IEEE BIBM

   Graph convolutional networks for predicting drug-protein interactions

   Hafez Eslami Manoochehri, Arvind Pillai, and Mehrdad Nourani

   In 2019 IEEE International Conference on Bioinformatics and Biomedicine (BIBM) , 2019

   Bib PDF

   @inproceedings{manoochehri2019graph,
     title = {Graph convolutional networks for predicting drug-protein interactions},
     author = {Manoochehri, Hafez Eslami and Pillai, Arvind and Nourani, Mehrdad},
     booktitle = {2019 IEEE International Conference on Bioinformatics and Biomedicine (BIBM)},
     pages = {1223--1225},
     year = {2019},
     organization = {IEEE},
   }

2018

1. FGCS

   Local diagonal extrema number pattern: A new feature descriptor for face recognition

   Arvind Pillai, Rajkumar Soundrapandiyan, Swapnil Satapathy, and 3 more authors

   Future Generation Computer Systems, 2018

   Bib PDF

   @article{pillai2018local,
     title = {Local diagonal extrema number pattern: A new feature descriptor for face recognition},
     author = {Pillai, Arvind and Soundrapandiyan, Rajkumar and Satapathy, Swapnil and Satapathy, Suresh Chandra and Jung, Ki-Hyun and Krishnan, Rajakumar},
     journal = {Future Generation Computer Systems},
     volume = {81},
     pages = {297--306},
     year = {2018},
     publisher = {Elsevier},
   }

2017

1. i-Pact

   Adaptive new top-hat transform and multi-scale sequential toggle operator based infrared image enhancement

   Arvind Pillai, S Rajkumar, K Marimuthu, and 1 more author

   In 2017 Innovations in Power and Advanced Computing Technologies (i-PACT) , 2017

   Bib PDF

   @inproceedings{pillai2017adaptive,
     title = {Adaptive new top-hat transform and multi-scale sequential toggle operator based infrared image enhancement},
     author = {Pillai, Arvind and Rajkumar, S and Marimuthu, K and Rajasekaran, G},
     booktitle = {2017 Innovations in Power and Advanced Computing Technologies (i-PACT)},
     pages = {1--5},
     year = {2017},
     organization = {IEEE},
   }