dorsal/arxiv
View SchemaEvasionBench: Detecting Evasive Answers in Financial Q&A via Multi-Model Consensus and LLM-as-Judge
| Authors | Shijian Ma, Yan Lin, Yi Yang |
|---|---|
| Categories | |
| ArXiv ID | 2601.09142vv1 |
| URL | https://arxiv.org/abs/2601.09142 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
Detecting evasive answers in earnings calls is critical for financial transparency, yet progress is hindered by the lack of large-scale benchmarks. We introduce EvasionBench, comprising 30,000 training samples and 1,000 human-annotated test samples (Cohen's Kappa 0.835) across three evasion levels. Our key contribution is a multi-model annotation framework leveraging a core insight: disagreement between frontier LLMs signals hard examples most valuable for training. We mine boundary cases where two strong annotators conflict, using a judge to resolve labels. This approach outperforms single-model distillation by 2.4 percent, with judge-resolved samples improving generalization despite higher training loss (0.421 vs 0.393) - evidence that disagreement mining acts as implicit regularization. Our trained model Eva-4B (4B parameters) achieves 81.3 percent accuracy, outperforming its base by 25 percentage points and approaching frontier LLM performance at a fraction of inference cost.
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"abstract": "Detecting evasive answers in earnings calls is critical for financial transparency, yet progress is hindered by the lack of large-scale benchmarks. We introduce EvasionBench, comprising 30,000 training samples and 1,000 human-annotated test samples (Cohen\u0027s Kappa 0.835) across three evasion levels. Our key contribution is a multi-model annotation framework leveraging a core insight: disagreement between frontier LLMs signals hard examples most valuable for training. We mine boundary cases where two strong annotators conflict, using a judge to resolve labels. This approach outperforms single-model distillation by 2.4 percent, with judge-resolved samples improving generalization despite higher training loss (0.421 vs 0.393) - evidence that disagreement mining acts as implicit regularization. Our trained model Eva-4B (4B parameters) achieves 81.3 percent accuracy, outperforming its base by 25 percentage points and approaching frontier LLM performance at a fraction of inference cost.",
"arxiv_id": "2601.09142",
"authors": [
"Shijian Ma",
"Yan Lin",
"Yi Yang"
],
"categories": [
"cs.LG",
"cs.CL"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "EvasionBench: Detecting Evasive Answers in Financial Q\u0026A via Multi-Model Consensus and LLM-as-Judge",
"url": "https://arxiv.org/abs/2601.09142",
"version": "v1"
},
"schema_id": "dorsal/arxiv",
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"type": "Model",
"variant": "snapshot-2026-01-17",
"version": "0.1.0"
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