Abstract

Abstract:

Precision psychiatry is a new research field that uses advanced data mining over a wide range of neural, behavioral, psychological, and physiological data sources for classification of mental health conditions. The talk will present a computational framework for predicting sleep efficiency of insomnia sufferers. A smart band experiment is conducted to collect heterogeneous data, including sleep records, daily activities, and demographics, whose missing values are imputed via Improved Generative Adversarial Imputation Networks (Imp-GAIN). Equipped with the imputed data, we predict sleep efficiency of individual users with a proposed interpretable LSTM -Attention (LA Block) neural network model. We also propose a model, Pairwise Learning-based Ranking Generation (PLRG), to rank users with high insomnia potential in the next day. We discuss the implications of our findings from the perspective of a psychiatric practitioner. Our computational framework can be used for other applications that analyze and handle noisy and incomplete time-series human activity data in the domain of precision psychiatry.

Bio:

Sungkyu (Shaun) Park is a Ph.D. candidate in the Graduate School of Culture Technology at KAIST . He is interested in understanding human behaviors and psychiatric disorders in the wild through the lens of large-scale data. His research focuses on techniques for developing mobile/wearable applications to retrieve data and for developing interpretable prediction models on mental health domains. He has interned at Nokia Bell Labs, Cambridge this summer and owned a startup aiming to launch an intervention app for insomnia, developed based on the current research.