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The Curve Fitting Problem: A Bayesian Approach

Published online by Cambridge University Press:  01 April 2022

Prasanta S. Bandyopadhayay
Affiliation:
Montana State University
Robert J. Boik
Affiliation:
Montana State University
Susan Vineberg
Affiliation:
University of Rochester

Abstract

In the curve fitting problem two conflicting desiderata, simplicity and goodness-of-fit, pull in opposite directions. To this problem, we propose a solution that strikes a balance between simplicity and goodness-of-fit. Using Bayes’ theorem we argue that the notion of prior probability represents a measurement of simplicity of a theory, whereas the notion of likelihood represents the theory’s goodness-of-fit. We justify the use of prior probability and show how to calculate the likelihood of a family of curves. We diagnose the relationship between simplicity of a theory and its predictive accuracy.

Information

Type
Confirmation
Copyright
Copyright © Philosophy of Science Association 1996

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