Related papers: Overparameterized Multiple Linear Regression as Hyper-Curve Fitting

URL: http://arxiv.org/abs/2404.07849v1
Date: Thu, 11 Apr 2024 15:43:11 GMT
Title: Overparameterized Multiple Linear Regression as Hyper-Curve Fitting
Authors: E. Atza, N. Budko,
Abstract summary: It is proven that a linear model will produce exact predictions even in the presence of nonlinear dependencies that violate the model assumptions. The hyper-curve approach is especially suited for the regularization of problems with noise in predictor variables and can be used to remove noisy and "improper" predictors from the model.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The paper shows that the application of the fixed-effect multiple linear regression model to an overparameterized dataset is equivalent to fitting the data with a hyper-curve parameterized by a single scalar parameter. This equivalence allows for a predictor-focused approach, where each predictor is described by a function of the chosen parameter. It is proven that a linear model will produce exact predictions even in the presence of nonlinear dependencies that violate the model assumptions. Parameterization in terms of the dependent variable and the monomial basis in the predictor function space are applied here to both synthetic and experimental data. The hyper-curve approach is especially suited for the regularization of problems with noise in predictor variables and can be used to remove noisy and "improper" predictors from the model.

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