Author

Sungeun An

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#artificial intelligence Jan 2026

NC-Bench: An LLM Benchmark for Evaluating Conversational Competence

The Natural Conversation Benchmark (NC-Bench) fills the gap by evaluating conversational competence: the ability to perform structurally appropriate actions such as repairing, closing, or refusing, as defined by conversation science.

Robert J. Moore, Sungeun An, Farhan Ahmed et al. · arXiv.org · 1 citation

Preprint Aug 2026

The Wording Effect: Quantifying Two-Way Drift in LLM Benchmark Performance

It is shown that rephrasing a problem while keeping its meaning and answer fixed routinely flips a model's answer in both directions, so some failures become successes and some successes become failures, and BenchDrift generates meaning-preserving variations of benchmark problems along four axes, namely linguistic, ref...

Shailja Thakur, Sungeun An, Chad DeLuca et al. · 1 citation