Computer Science > Human-Computer Interaction
arXiv:2603.08856 (cs)
[Submitted on 9 Mar 2026]
Title:Unpacking Interpretability: Human-Centered Criteria for Optimal Combinatorial Solutions
View a PDF of the paper titled Unpacking Interpretability: Human-Centered Criteria for Optimal Combinatorial Solutions, by Dominik Pegler and 4 other authors
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Abstract: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.
| Comments: | |
| Subjects: | Human-Computer Interaction (cs.HC); Artificial Intelligence (cs.AI) |
| Cite as: | arXiv:2603.08856 [cs.HC] |
| (or arXiv:2603.08856v1 [cs.HC] for this version) | |
| https://doi.org/10.48550/arXiv.2603.08856
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View a PDF of the paper titled Unpacking Interpretability: Human-Centered Criteria for Optimal Combinatorial Solutions, by Dominik Pegler and 4 other authors
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