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September 17, 2026ETRI JournalOpen Access

Explainable AI for clove quality grading: Benchmarking post hoc XAI and compositional interpretability under domain shift

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Authors

INInnocent NyalalaPNPatrick Vincent Ndowo

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Overview

Benchmarking study reveals superior auditing fidelity in a compositional pipeline over post hoc XAI for clove grading, highlighting its potential for regulatory compliance.

Key Points

  • To benchmark post hoc explainable artificial intelligence methods against an intrinsically interpretable compositional pipeline for regulatory clove quality grading under domain shift.
  • Evaluated 4,603 expert-graded clove images across four Zanzibar State Trading Corporation quality grades using eight convolutional neural network and vision transformer architectures.
  • Benchmarked seven post hoc explainers (Grad-CAM, Grad-CAM++, ScoreCAM, LIME, GradientSHAP, CLS-Attention, and Chefer LRP) against a compositional segmentation–classification pipeline using a novel Explanation Energy Ratio metric and synthetic background-replacement domain shifts.
  • Post hoc explanation quality varied substantially across model architectures, with LIME showing high visual alignment on transformers despite high computational latency, while GradientSHAP proved too computationally intensive for edge deployment.
  • The compositional pipeline achieved an F1 score of 99.45% alongside a 100% Explanation Energy Ratio by design, making it the preferred approach for regulatory grading audits.

Cite This Study

Nyalala et al. (2026) studied this question.

synapsesocial.com/papers/6aabb7155f706d05830e5f42https://doi.org/10.4218/etrij.2026-0225
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