Rule-Based Moral Principles for Explaining Uncertainty in Natural Language Generation
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866915485622206464 |
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| author | Atf, Zahra Lewis, Peter R |
| author_facet | Atf, Zahra Lewis, Peter R |
| contents | Large language models (LLMs) are increasingly used in high-stakes settings, where explaining uncertainty is both technical and ethical. Probabilistic methods are often opaque and misaligned with expectations of transparency. We propose a framework based on rule-based moral principles for handling uncertainty in LLM-generated text. Using insights from moral psychology and virtue ethics, we define rules such as precaution, deference, and responsibility to guide responses under epistemic or aleatoric uncertainty. These rules are encoded in a lightweight Prolog engine, where uncertainty levels (low, medium, high) trigger aligned system actions with plain-language rationales. Scenario-based simulations benchmark rule coverage, fairness, and trust calibration. Use cases in clinical and legal domains illustrate how moral reasoning can improve trust and interpretability. Our approach offers a transparent, lightweight alternative to probabilistic models for socially responsible natural language generation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_07190 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rule-Based Moral Principles for Explaining Uncertainty in Natural Language Generation Atf, Zahra Lewis, Peter R Computation and Language Human-Computer Interaction Large language models (LLMs) are increasingly used in high-stakes settings, where explaining uncertainty is both technical and ethical. Probabilistic methods are often opaque and misaligned with expectations of transparency. We propose a framework based on rule-based moral principles for handling uncertainty in LLM-generated text. Using insights from moral psychology and virtue ethics, we define rules such as precaution, deference, and responsibility to guide responses under epistemic or aleatoric uncertainty. These rules are encoded in a lightweight Prolog engine, where uncertainty levels (low, medium, high) trigger aligned system actions with plain-language rationales. Scenario-based simulations benchmark rule coverage, fairness, and trust calibration. Use cases in clinical and legal domains illustrate how moral reasoning can improve trust and interpretability. Our approach offers a transparent, lightweight alternative to probabilistic models for socially responsible natural language generation. |
| title | Rule-Based Moral Principles for Explaining Uncertainty in Natural Language Generation |
| topic | Computation and Language Human-Computer Interaction |
| url | https://arxiv.org/abs/2509.07190 |