[KongchangAI]
Conceptchance-normalized accuracy

Chance-Normalized Accuracy

An evaluation calibration metric that maps model accuracy onto a unified scale reflecting the improvement relative to random guessing, making accuracy comparisons across benchmarks more meaningful.

Timeline (last 90 days)

Oct 28

In 34 of the 36 model-benchmark settings, high-TVS items outperformed low-TVS items at the end of pretraining, with an average advantage of 7.3 percentage points in opportunity-normalized accuracy.

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Oct 28

Opportunity-normalized accuracy is computed as (model accuracy − random-guess accuracy) / (1 − random-guess accuracy).

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