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Nathaniel Weir

9 accepted papers

2026

VeriCoT: Neuro-symbolic Chain-of-Thought Validation via Logical Consistency Checks

ICLR 2026poster

LLMs can perform multi-step reasoning through Chain-of-Thought (CoT), but they cannot reliably verify their own logic. Even when they reach correct answers, the underlying reasoning may be flawed, undermining trust in high-stakes scenarios. To mitigate this issue, we introduce VeriCoT, a neuro-symbo…

Cited by 0SourceScholar
2025

Core: Robust Factual Precision with Informative Sub-Claim Identification

ACL 2025finding

Hallucinations pose a challenge to the application of large language models (LLMs) thereby motivating the development of metrics to evaluate factual precision. We observe that popular metrics using the Decompose-Then-Verify framework, such as FActScore, can be manipulated by adding obvious or repeti…

2025

From Models to Microtheories: Distilling a Model's Topical Knowledge for Grounded Question-Answering

ICLR 2025poster

Recent reasoning methods (e.g., chain-of-thought) help users understand how language models (LMs) answer a single question, but they do little to reveal the LM’s overall understanding, or “theory,” about the question’s topic, making it still hard to trust the model. Our goal is to materialize such t…

2025

SELF-[IN]CORRECT: LLMs Struggle with Discriminating Self-Generated Responses

AAAI 2025technical

Can LLMs consistently improve their previous outputs for better results? For this to be true, LLMs would need to be better at discriminating among previously-generated alternatives, than generating initial responses. We explore the validity of this hypothesis in practice. We first formulate a unifie…

2024

Enhancing Systematic Decompositional Natural Language Inference Using Informal Logic

EMNLP 2024main

Recent language models enable new opportunities for structured reasoning with text, such as the construction of intuitive, proof-like textual entailment trees without relying on brittle formal logic. However, progress in this direction has been hampered by a long-standing lack of a clear protocol fo…

Cited by 9SourcePDFScholar
2024

Learning to Reason via Program Generation, Emulation, and Search

NeurIPS 2024poster

Program synthesis with language models (LMs) has unlocked a large set of reasoning abilities; code-tuned LMs have proven adept at generating programs that solve a wide variety of algorithmic symbolic manipulation tasks (e.g. word concatenation). However, not all reasoning tasks are easily expressibl…

2024

NELLIE: A Neuro-Symbolic Inference Engine for Grounded, Compositional, and Explainable Reasoning

IJCAI 2024poster

Our goal is to develop a modern approach to answering questions via systematic reasoning where answers are supported by human interpretable proof trees grounded in an NL corpus of facts. Such a system would help alleviate the challenges of interpretability and hallucination with modern LMs, and the…

2024

Ontologically Faithful Generation of Non-Player Character Dialogues

EMNLP 2024main

We introduce a language generation dataset grounded in a popular video game. KNUDGE (**KN**owledge Constrained **U**ser-NPC **D**ialogue **GE**neration) requires models to produce trees of dialogue between video game characters that accurately reflect quest and entity specifications stated in natura…

2024

TV-TREES: Multimodal Entailment Trees for Neuro-Symbolic Video Reasoning

EMNLP 2024main

It is challenging for models to understand complex, multimodal content such as television clips, and this is in part because video-language models often rely on single-modality reasoning and lack interpretability. To combat these issues we propose TV-TREES, the first multimodal entailment tree gener…

Cited by 10SourcePDFScholar