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This paper examines how the underrepresentation of elderly riders in mobility datasets introduces systematic bias into mobility modeling, using Citi Bike data from Jersey City. It shows that models trained on majority-dominated populations misrepresent elderly mobility behavior, and that higher-capability models do not necessarily improve subgroup fidelity under limited demographic data.
This paper presents a polynomial-time algorithm for learning the structure of a Gaussian graphical model from a single trajectory of Glauber dynamics, with a trajectory-length guarantee that does not depend on the mixing time.
This paper develops a stationary-distribution theory for triplet-based plateau search in Random Forest ensemble-size selection, modeling the central ensemble size as a birth-death Markov chain and deriving equilibrium equations and asymptotic properties.