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A Note on Asynchronous Challenges: Unveiling Formulaic Bias and Data Loss in the Hayashi-Yoshida Estimator
April 30, 2024, 4:43 a.m. | Evangelos Georgiadis
cs.LG updates on arXiv.org arxiv.org
Abstract: The Hayashi-Yoshida (\HY)-estimator exhibits an intrinsic, telescoping property that leads to an often overlooked computational bias, which we denote,formulaic or intrinsic bias. This formulaic bias results in data loss by cancelling out potentially relevant data points, the nonextant data points. This paper attempts to formalize and quantify the data loss arising from this bias. In particular, we highlight the existence of nonextant data points via a concrete example, and prove necessary and sufficient conditions for …
abstract arxiv asynchronous bias challenges computational cs.lg data data loss estimator intrinsic leads loss math.co math.pr property results stat.ml type
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