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MS MARCO: search-query reading-comprehension data

Contribution grade

Search and question answering · Evaluation resource design

Reference score145,000Provisional editorial estimate of this exact contribution; its grade is assessed separately.

What changed

Released real anonymized Bing queries, retrieved web passages and human-written answers, including some questions with multiple answers or no answer, for reading-comprehension research.

Scientific scope

Released real anonymized Bing queries, retrieved web passages and human-written answers, including some questions with multiple answers or no answer, for reading-comprehension research. Original v1 releases 100,000 queries; one million was a future collection target. This is not the later enlarged passage-ranking or document-ranking release. Human-generated answers and search sampling do not guarantee factual completeness or contamination-free future evaluation.

Evidence

The linked original sources describe the stated contribution and its evidence limits. WRS has not independently rerun the experiments or certified a proof. Original v1 releases 100,000 queries; one million was a future collection target. This is not the later enlarged passage-ranking or document-ranking release. Human-generated answers and search sampling do not guarantee factual completeness or contamination-free future evaluation.

Contributors

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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