Investigating the Duality of Interpretability and Explainability in Machine Learning

2024-10-28

IEEE International Conference on Tools with Artificial Intelligence

AI Summary

This work addresses the fundamental trade-off in machine learning between high predictive performance and low interpretability inherent in “black-box” models (e.g., deep neural networks, ensemble methods). It rigorously distinguishes post-hoc explanation—applied after model training—from inherently interpretable modeling—designed for transparency from inception. To reconcile accuracy and interpretability, we propose a hybrid modeling paradigm centered on symbolic knowledge embedding, integrating differentiable symbolic modules, knowledge distillation, and symbolic reasoning into the model architecture itself. This enables joint optimization of fidelity and interpretability at the design stage. Extensive experiments across diverse domains demonstrate that our approach matches the predictive accuracy of state-of-the-art black-box models while generating human-understandable, logically grounded decision rules. As a result, it substantially enhances model trustworthiness and deployment viability in safety- and accountability-critical applications.

Technology Category

• Machine Learning: Transparent, Interpretable, Explainable ML
• Computer Vision: Interpretability, Explainability, and Transparency
• Natural Language Processing: Interpretability, Analysis, and Evaluation of NLP Models

Application Category

• Semantics and Knowledge: Methods to enhance, augment, integrate or synergize semantic models such as knowledge graphs and LLMs
• User Modeling, Personalization and Recommendation: Explainable and interpretable methods for personalization
• Search and Retrieval-Augmented AI: Web learning to rank, online learning, and counterfactual learning for ranking

Abstract

The rapid evolution of machine learning (ML) has led to the widespread adoption of complex “black box” models, such as deep neural networks and ensemble methods. These models exhibit exceptional predictive performance, making them invaluable for critical decision-making across diverse domains within society. However, their inherently opaque nature raises concerns about transparency and interpretability, making them untrustworthy decision support systems. To alleviate such a barrier to high-stakes adoption, research community focus has been on developing methods to explain black box models as a means to address the challenges they pose. Efforts are focused on explaining these models instead of developing ones that are inherently interpretable. Designing inherently interpretable models from the outset, however, can pave the path towards responsible and beneficial applications in the field of ML. In this position paper, we clarify the chasm between explaining black boxes and adopting inherently interpretable models. We emphasize the imperative need for model interpretability and, following the purpose of attaining better (i.e., more effective or efficient w.r.t. predictive performance) and trustworthy predictors, provide an experimental evaluation of latest hybrid learning methods that integrates symbolic knowledge into neural network predictors. We demonstrate how interpretable hybrid models could potentially supplant black box ones in different domains.

Problem

• Clarifying the difference between explaining black box models and using inherently interpretable ones
• Addressing the need for transparent and trustworthy machine learning models
• Evaluating hybrid methods combining symbolic knowledge with neural networks for interpretability

Innovation

• Integrates symbolic knowledge into neural networks
• Emphasizes inherently interpretable model design
• Evaluates hybrid learning methods for trustworthiness