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        <title>When FEVER Meets Finance: A Controlled Benchmark Reveals Overlap-Driven Financial Claim Verification</title>
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            <namePart type="given">Jimin</namePart>
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            <namePart type="given">Hsin-Hsi</namePart>
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    <abstract>Realistic financial misinformation is typically a single-token edit of a true statement, yet no public financial dataset supports per-edit statements about which factual changes a verification system can detect. We introduce a controlled benchmark of 1,489 claim-evidence pairs derived from SEC 10-K filings via documented FactCC-style perturbations (number changes, negation flips, entity swaps, evidence mismatches), each pair tagged with its generation rule, and use it to evaluate eleven models spanning three technological generations - TF-IDF linear classifiers, tree ensembles, and neural models including a fine-tuned transformer - all trained on FEVER under one protocol. Per-edit attribution is our central result: the strongest model verifies verbatim financial claims at 98.8% accuracy but detects single-token falsifications at 33% accuracy or below, with number changes and negation flips detected at similar rates and entity swaps far the hardest (2.6%, on 38 pairs). Two diagnoses follow. A hypothesis-only probe shows the classical tier’s in-domain competence is claim-surface artifact - a claim-only classifier reaches macro-F1 0.556 against 0.549 for full claim+evidence models - while our benchmark shows no such artifact under the same probe (0.358). And transfer to real financial claims collapses: on Fin-Fact, no learned model beats a tuned lexical-overlap heuristic (macro-F1 0.368), despite in-domain scores up to 0.841. We release the benchmark, generation code, and evaluation harness.</abstract>
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%0 Conference Proceedings
%T When FEVER Meets Finance: A Controlled Benchmark Reveals Overlap-Driven Financial Claim Verification
%A Rapolu, Suprabhat
%Y Huang, Jimin
%Y Lee, Yongjae
%Y Ananiadou, Sophia
%Y Chen, Hsin-Hsi
%Y Takamura, Hiroya
%Y Chen, Chung-Chi
%S Proceedings of the 11th Workshop on Financial Technology and Natural Language Processing
%D 2026
%8 October
%I Association for Computational Linguistics
%C Budapest, Hungary
%@ 979-8-89176-466-8
%F rapolu-2026-fever
%X Realistic financial misinformation is typically a single-token edit of a true statement, yet no public financial dataset supports per-edit statements about which factual changes a verification system can detect. We introduce a controlled benchmark of 1,489 claim-evidence pairs derived from SEC 10-K filings via documented FactCC-style perturbations (number changes, negation flips, entity swaps, evidence mismatches), each pair tagged with its generation rule, and use it to evaluate eleven models spanning three technological generations - TF-IDF linear classifiers, tree ensembles, and neural models including a fine-tuned transformer - all trained on FEVER under one protocol. Per-edit attribution is our central result: the strongest model verifies verbatim financial claims at 98.8% accuracy but detects single-token falsifications at 33% accuracy or below, with number changes and negation flips detected at similar rates and entity swaps far the hardest (2.6%, on 38 pairs). Two diagnoses follow. A hypothesis-only probe shows the classical tier’s in-domain competence is claim-surface artifact - a claim-only classifier reaches macro-F1 0.556 against 0.549 for full claim+evidence models - while our benchmark shows no such artifact under the same probe (0.358). And transfer to real financial claims collapses: on Fin-Fact, no learned model beats a tuned lexical-overlap heuristic (macro-F1 0.368), despite in-domain scores up to 0.841. We release the benchmark, generation code, and evaluation harness.
%U https://aclanthology.org/2026.finnlp-1.42/
%P 518-523

Markdown (Informal)

[When FEVER Meets Finance: A Controlled Benchmark Reveals Overlap-Driven Financial Claim Verification](https://aclanthology.org/2026.finnlp-1.42/) (Rapolu, FinNLP 2026)

• When FEVER Meets Finance: A Controlled Benchmark Reveals Overlap-Driven Financial Claim Verification (Rapolu, FinNLP 2026)

ACL

• Suprabhat Rapolu. 2026. When FEVER Meets Finance: A Controlled Benchmark Reveals Overlap-Driven Financial Claim Verification. In Proceedings of the 11th Workshop on Financial Technology and Natural Language Processing, pages 518–523, Budapest, Hungary. Association for Computational Linguistics.