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Calibrating LLM Judges Against Humans
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LLM-as-a-judge uses a language model to evaluate generated outputs against a task or rubric.
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Research tests how well such judges agree with people and how presentation, length or model identity can affect their scores.
Research uses LLMs as evaluators for open-ended model outputs. G-Eval presents task criteria and uses a chain-of-thought plus form-filling procedure for text summarization and dialogue evaluation; in one reported setup, GPT-4’s scores reached a Spearman correlation of 0.514 with human judgments on summarization. MT-Bench and Chatbot Arena study agreement with human preferences and report over 80% agreement for GPT-4 in their evaluated settings. These are benchmark-specific results, not a universal guarantee of judge reliability. Other work identifies position, verbosity and self-enhancement biases.
A pointwise judge scores one answer against criteria; a pairwise judge compares two candidate responses.
A benchmark can swap answer order to measure position sensitivity.
An evaluation can compare judge scores with human judgments on a labeled sample.
A team can test for self-preference when the judge evaluates outputs from its own model.
Use LLM judges as one evaluation instrument alongside task-specific tests and human review. Report the judge model, rubric, sampling setup and benchmark; check agreement and bias on representative examples before relying on aggregate scores.
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LLM-as-a-judge uses a language model to evaluate generated outputs against a task or rubric. Research tests how well such judges agree with people and how presentation, length or model identity can affect their scores.
LLM-sebagai-hakim menggunakan model berkebolehan sebagai penilai automatik bagi respons model lain.
Pemarkahan mengikut mata menilai satu jawapan pada rubrik, manakala perbandingan berpasangan memilih yang lebih baik daripada dua calon.
Hakim cenderung untuk mengutamakan respons yang lebih panjang dan yang sepadan dengan gaya mereka sendiri, walaupun mereka sebenarnya tidak lebih baik.
Menukar perintah dan mengira hanya keputusan yang konsisten membatalkan kecenderungan hakim untuk memihak kepada kedudukan.
G-Eval presents an LLM evaluator with chain-of-thought prompting and a form-filling paradigm for tasks such as summarization and dialogue evaluation.
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Calibrating LLM Judges Against Humans
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