Unpacking Interpretability: Human-Centered Criteria for Optimal Combinatorial Solutions

Fuente: arXiv
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Hauptverfasser: Pegler, Dominik, Jäkel, Frank, Steyrl, David, Scharnowski, Frank, Melinscak, Filip
Format: Preprint
Veröffentlicht: 2026
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author Pegler, Dominik
Jäkel, Frank
Steyrl, David
Scharnowski, Frank
Melinscak, Filip
author_facet Pegler, Dominik
Jäkel, Frank
Steyrl, David
Scharnowski, Frank
Melinscak, Filip
contents Algorithmic support systems often return optimal solutions that are hard to understand. Effective human-algorithm collaboration, however, requires interpretability. When machine solutions are equally optimal, humans must select one, but a precise account of what makes one solution more interpretable than another remains missing. To identify structural properties of interpretable machine solutions, we present an experimental paradigm in which participants chose which of two equally optimal solutions for packing items into bins was easier to understand. We show that preferences reliably track three quantifiable properties of solution structure: alignment with a greedy heuristic, simple within-bin composition, and ordered visual representation. The strongest associations were observed for ordered representations and heuristic alignment, with compositional simplicity also showing a consistent association. Reaction-time evidence was mixed, with faster responses observed primarily when heuristic differences were larger, and aggregate webcam-based gaze did not show reliable effects of complexity. These results provide a concrete, feature-based account of interpretability in optimal packing solutions, linking solution structure to human preference. By identifying actionable properties (simple compositions, ordered representation, and heuristic alignment), our findings enable interpretability-aware optimization and presentation of machine solutions, and outline a path to quantify trade-offs between optimality and interpretability in real-world allocation and design tasks.
format Preprint
id arxiv_https___arxiv_org_abs_2603_08856
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Unpacking Interpretability: Human-Centered Criteria for Optimal Combinatorial Solutions
Pegler, Dominik
Jäkel, Frank
Steyrl, David
Scharnowski, Frank
Melinscak, Filip
Human-Computer Interaction
Artificial Intelligence
Algorithmic support systems often return optimal solutions that are hard to understand. Effective human-algorithm collaboration, however, requires interpretability. When machine solutions are equally optimal, humans must select one, but a precise account of what makes one solution more interpretable than another remains missing. To identify structural properties of interpretable machine solutions, we present an experimental paradigm in which participants chose which of two equally optimal solutions for packing items into bins was easier to understand. We show that preferences reliably track three quantifiable properties of solution structure: alignment with a greedy heuristic, simple within-bin composition, and ordered visual representation. The strongest associations were observed for ordered representations and heuristic alignment, with compositional simplicity also showing a consistent association. Reaction-time evidence was mixed, with faster responses observed primarily when heuristic differences were larger, and aggregate webcam-based gaze did not show reliable effects of complexity. These results provide a concrete, feature-based account of interpretability in optimal packing solutions, linking solution structure to human preference. By identifying actionable properties (simple compositions, ordered representation, and heuristic alignment), our findings enable interpretability-aware optimization and presentation of machine solutions, and outline a path to quantify trade-offs between optimality and interpretability in real-world allocation and design tasks.
title Unpacking Interpretability: Human-Centered Criteria for Optimal Combinatorial Solutions
topic Human-Computer Interaction
Artificial Intelligence
url https://arxiv.org/abs/2603.08856