Browsing Journal Articles by Author "Roy, Samrat"
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A Bayesian nonparametric approach for multiple mediators with applications in mental health studies
Roy, Samrat; Daniels, Michael J; Roy, Jason (Oxford University Press, 2024-02-09)Mediation analysis with contemporaneously observed multiple mediators is a significant area of causal inference. Recent approachesfor multiple mediators are often based on parametric models and thus may suffer from model ... -
A Regularized Low Tubal-Rank Model for High-dimensional Time Series Data
Roy, Samrat; Michailidis, George (Institute of Statistical Science, Academia Sinica, 2024)High dimensional time series analysis has diverse applications in macroeconometrics and finance. Recent factor-type models employing tensor-based decompositions prove to be computationally involved due to the non-convex ...