arXiv Machine Learning By Xiangwei Wang, Peng Wang, Saman Halgamuge

CORDIAL: Calibrating Ordinal LLM Outputs from Few Labels

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CORDIAL is a calibration method for large language models that treats ordinal outputs as noisy measurements of true labels and corrects them using a small, interpretable channel of five parameters. The method can be calibrated from only a few labels and preserves first‑order stochastic order. Experiments on Amazon reviews and CMU‑MOSEI transcripts with four LLMs show that CORDIAL achieves the lowest log loss in most settings, outperforming other calibrators when the calibration set is small, and can also learn priors from other tasks or fuse multiple LLMs.

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