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This research introduces a novel parameterization for supervised latent-variable models that structurally decouples epistemic and aleatoric uncertainty estimates. By training distinct parameter paths with specific supervision targets, the method achieves gradient isolation between these error components while maintaining high predictive performance across benchmarks. This advancement offers a more operationally robust framework for interpreting model confidence in ambiguous data scenarios without sacrificing accuracy.
Surse care acoperăarXiv, LessWrong
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Structurally Separated Uncertainty in Supervised Latent Variable Models

arXiv2 min de cititArticolul și perspectiva sunt în engleză.

arXiv:2602.11219v2 Announce Type: replace-cross Abstract: Predictive uncertainty is commonly decomposed into epistemic and aleatoric components, but standard decompositions often produce strongly correlated estimates because both quantities are derived from the same predictive distribution. We study an alternative design principle, \emph{structural separation}, which assigns epistemic and aleatoric uncertainty to disjoint parameter paths trained with distinct supervision targets: reducible prediction error for epistemic uncertainty and persistent label ambiguity for aleatoric uncertainty. We instantiate this principle in two supervised latent-variable models, a Credal Concept Bottleneck Model and a credal Self-Explaining Neural Network, and prove a gradient-isolation result showing that the two uncertainty heads are not coupled through shared training gradients under the proposed parameterization. Across five ambiguity-aware benchmarks, structural separation substantially reduces epistemic-aleatoric correlation while preserving predictive performance. Further analyses show that aleatoric estimates track annotator- or corpus-derived ambiguity, while epistemic estimates are more sensitive to prediction error and data availability. These results suggest that supervised latent-variable architectures provide a practical route toward uncertainty estimates that are not merely decorrelated, but operationally distinguishable.

Abstract:Predictive uncertainty is commonly decomposed into epistemic and aleatoric components, but standard decompositions often produce strongly correlated estimates because both quantities are derived from the same predictive distribution. We study an alternative design principle, \emph{structural separation}, which assigns epistemic and aleatoric uncertainty to disjoint parameter paths trained with distinct supervision targets: reducible prediction error for epistemic uncertainty and persistent label ambiguity for aleatoric uncertainty. We instantiate this principle in two supervised latent-variable models, a Credal Concept Bottleneck Model and a credal Self-Explaining Neural Network, and prove a gradient-isolation result showing that the two uncertainty heads are not coupled through shared training gradients under the proposed parameterization. Across five ambiguity-aware benchmarks, structural separation substantially reduces epistemic-aleatoric correlation while preserving predictive performance. Further analyses show that aleatoric estimates track annotator- or corpus-derived ambiguity, while epistemic estimates are more sensitive to prediction error and data availability. These results suggest that supervised latent-variable architectures provide a practical route toward uncertainty estimates that are not merely decorrelated, but operationally distinguishable.

Machine Learning (cs.LG); Artificial Intelligence (cs.AI)

arXiv:2602.11219 [cs.LG]

(or arXiv:2602.11219v2 [cs.LG] for this version)

https://doi.org/10.48550/arXiv.2602.11219 Focus to learn more arXiv-issued DOI via DataCite

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