Linear Regression under Special Relativity

Si Hyung Joo

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arXiv · 2005.14292

Linear Regression under Special Relativity

Si Hyung Joo

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Abstract

This study investigated the problem posed by using ordinary least squares (OLS) to estimate parameters of simple linear regression under a specific context of special relativity, where an independent variable is restricted to an open interval, (-c, c). It is found that the OLS estimate for the slope coefficient is not invariant under Lorentz velocity transformation. Accordingly, an alternative estimator for the parameters of linear regression under special relativity is proposed. This estimator can be considered a generalization of the OLS estimator under special relativity; when c approaches to infinity, the proposed estimator and its variance converges to the OLS estimator and its variance, respectively. The variance of the proposed estimator is larger than that of the OLS estimator, which implies that hypothesis testing using the OLS estimator and its variance may result in a liberal test under special relativity.

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Si Hyung Joo. 2020-05-28. Linear Regression under Special Relativity. https://arxiv.org/abs/2005.14292

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