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Kairos: temporal data ordering and factual-freshness evaluation

Contribution grade

Language-model data and evaluation · Human-designed research method or resource

Reference score45,000Provisional editorial estimate of this exact contribution; its grade is assessed separately.

What changed

Built a temporally grounded question benchmark and compared6B models pretrained on chronological versus shuffled versions of CommonCrawl data at a fixed token budget.

Scientific scope

Built a temporally grounded question benchmark and compared6B models pretrained on chronological versus shuffled versions of CommonCrawl data at a fixed token budget. Chronological pretraining improved temporal freshness in the studied setting, not guaranteed continual learning, arbitrary knowledge updating or universal superiority. Released versus planned checkpoints must be checked separately at adoption.

Evidence

The linked original sources describe the stated contribution and its evidence limits. WRS has not independently rerun the experiments or certified a proof. Chronological pretraining improved temporal freshness in the studied setting, not guaranteed continual learning, arbitrary knowledge updating or universal superiority. Released versus planned checkpoints must be checked separately at adoption.

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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