A broad benchmark of intrinsic dimension estimators shows that no single method or set of hyperparameters works across datasets, and tuned benchmark scores frequently indicate overfitting rather than transferable accuracy.
Metric Space Spread, Intrinsic Dimension and the Manifold Hypothesis
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abstract
The concepts of spread and spread dimension of a metric space were introduced by Willerton in the context of quantifying biodiversity of ecosystems. This paper develops practical applications of spread dimension in the context of machine learning and manifold learning; we show that the topological dimension of a Riemannian manifold can be accurately estimated by computing the spread dimension of a finite subset. These results are presented as the theoretical basis for a novel method of estimating the intrinsic dimension of data. The practical applications of this method are demonstrated with empirical computations using real and synthetic data.
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A Survey of Dimension Estimation Methods
A broad benchmark of intrinsic dimension estimators shows that no single method or set of hyperparameters works across datasets, and tuned benchmark scores frequently indicate overfitting rather than transferable accuracy.