Statistical Multicriteria Benchmarking via the GSD-Front
CoRR(2024)
Abstract
Given the vast number of classifiers that have been (and continue to be)
proposed, reliable methods for comparing them are becoming increasingly
important. The desire for reliability is broken down into three main aspects:
(1) Comparisons should allow for different quality metrics simultaneously. (2)
Comparisons should take into account the statistical uncertainty induced by the
choice of benchmark suite. (3) The robustness of the comparisons under small
deviations in the underlying assumptions should be verifiable. To address (1),
we propose to compare classifiers using a generalized stochastic dominance
ordering (GSD) and present the GSD-front as an information-efficient
alternative to the classical Pareto-front. For (2), we propose a consistent
statistical estimator for the GSD-front and construct a statistical test for
whether a (potentially new) classifier lies in the GSD-front of a set of
state-of-the-art classifiers. For (3), we relax our proposed test using
techniques from robust statistics and imprecise probabilities. We illustrate
our concepts on the benchmark suite PMLB and on the platform OpenML.
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