Author

P. Klasnja

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Open access Sep 2026

Towards an Integrative Model of Physical Activity: bridging idiographic and nomothetic perspectives through participatory mapping.

Introduction: Existing behaviour change theories often frame physical activity (PA) engagement and sustainment as linear, stage-like processes and treat self-efficacy or intention as stable drivers across individuals and contexts. However, PA emerges from fluctuating internal and external conditions, requiring models t...

Meelim Kim, O. Perski, Steven A. De La Torre et al. · Health Psychology Review · 1 citation

#machine learning Open access Nov 2022

Doubly robust nearest neighbors in factor models

An improved variant of nearest neighbors (NN) for estimation with missing data in latent factor models that provides a (near-)quadratic improvement in the non-asymptotic error and admits a significantly narrower asymptotic confidence interval when compared to both unit-unit or time-time NN.

Raaz Dwivedi, Katherine Tian, Sabina Tomkins et al. · arXiv.org · 11 citations