Interpretability is not Explainability: New Quantitative XAI Approach with a focus on Recommender Systems in Education. (arXiv:2311.02078v1 [cs.IR])

The field of eXplainable Artificial Intelligence faces challenges due to the
absence of a widely accepted taxonomy that facilitates the quantitative
evaluation of explainability in Machine Learning algorithms. In this paper, we
propose a novel taxonomy that addresses the current gap in the literature by
providing a clear and unambiguous understanding of the key concepts and
relationships in XAI. Our approach is rooted in a systematic analysis of
existing definitions and frameworks, with a focus on transparency,
interpretability, completeness, complexity and understandability as essential
dimensions of explainability. This comprehensive taxonomy aims to establish a
shared vocabulary for future research. To demonstrate the utility of our
proposed taxonomy, we examine a case study of a Recommender System designed to
curate and recommend the most suitable online resources from MERLOT. By
employing the SHAP package, we quantify and enhance the explainability of the
RS within the context of our newly developed taxonomy.



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