PREVA INDEX

Our methodology

Understand how eligible reviews become project and developer scores.

TRANSPARENT BY DESIGN

Scores are evidence, not promises

PREVA displays a score only when the available review count and confidence meet the configured thresholds.

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How the score is built

The current ranking implementation uses the following safeguards.

01

Eligible reviews

Only approved reviews for eligible active project-scoped criteria enter the calculation.

02

Weighted criteria

Each review contributes through the weighted average of its eligible criteria.

03

Trust and recency

Verification and review age apply separate multipliers.

04

Bayesian confidence

The result is shrunk toward the configured global mean using a confidence constant.

05

Developer aggregation

Developer scores aggregate eligible project scores rather than treating all reviews as one pool.

06

Not enough data

Scores are withheld when the minimum review or confidence threshold is not met.