AWhat changed
Created crowdsourced questions over Wikipedia paragraphs with text-span answers, then added deliberately plausible unanswerable questions to require systems to abstain when the passage lacks an answer.
Scientific scope
Created crowdsourced questions over Wikipedia paragraphs with text-span answers, then added deliberately plausible unanswerable questions to require systems to abstain when the passage lacks an answer. SQuAD 2.0 combines filtered SQuAD 1.1 examples with new negative questions; it is not an independently authored replacement corpus. Answerability is defined relative to the supplied passage. Span overlap or abstention performance is not universal truthfulness or calibrated uncertainty.
Evidence
The linked original sources describe the stated contribution and its evidence limits. WRS has not independently rerun the experiments or certified a proof. SQuAD 2.0 combines filtered SQuAD 1.1 examples with new negative questions; it is not an independently authored replacement corpus. Answerability is defined relative to the supplied passage. Span overlap or abstention performance is not universal truthfulness or calibrated uncertainty.
Contributors
- Source-listed authors and technical contributors · SCIENCE: Source-listed authors or explicitly credited technical contributors for the cited versions. Family entries retain source-specific attribution; a combined list is not one original-paper byline or equal individual work. Names alone do not establish resolved identities.
- SQuAD: 100,000+ Questions for Machine Comprehension of Text
- Know What You Don't Know: Unanswerable Questions for SQuAD
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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