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Narayanan Sadagopan

4 accepted papers

2026

Semantic Volume: Quantifying and Detecting Both External and Internal Uncertainty in LLMs

AAAI 2026technical

Large language models (LLMs) have demonstrated remarkable performance across diverse tasks by encoding vast amounts of factual knowledge. However, they are still prone to hallucinations, generating incorrect or misleading information, often accompanied by high uncertainty. Existing methods for hallu

Cited by 0SourcePDFScholar
2025

Incorporating Diverse Perspectives in Cultural Alignment: Survey of Evaluation Benchmarks Through A Three-Dimensional Framework

EMNLP 2025

Large Language Models (LLMs) increasingly serve diverse global audiences, making it critical for responsible AI deployment across cultures. While recent works have proposed various approaches to enhance cultural alignment in LLMs, a systematic analysis of their evaluation benchmarks remains needed.

Cited by 0SourcePDFScholar
2025

When Thinking Fails: The Pitfalls of Reasoning for Instruction-Following in LLMs

NeurIPS 2025spotlight

Reasoning-enhanced large language models (RLLMs), whether explicitly trained for reasoning or prompted via chain-of-thought (CoT), have achieved state-of-the-art performance on many complex reasoning tasks. However, we uncover a surprising and previously overlooked phenomenon: explicit CoT reasoning…

Cited by 0SourceScholar
2024

AXCEL: Automated eXplainable Consistency Evaluation using LLMs

EMNLP 2024finding

Large Language Models (LLMs) are widely used in both industry and academia for various tasks, yet evaluating the consistency of generated text responses continues to be a challenge. Traditional metrics like ROUGE and BLEU show a weak correlation with human judgment. More sophisticated metrics using…