• Calculate a normalized 0–100 digitization priority score from significance, condition risk, demand, and nonnegative relative weights.
• Apply the same explicit rule consistently during ingest, quality control, reporting, or preservation planning.
• Expose records that need human review without silently rewriting the source data.

Only relative weights matter; multiplying every weight by the same factor leaves the score unchanged, and a zero weight excludes that component.

• The three criteria and default weights express a local decision policy, not a universal preservation standard; document governance and review scores for bias.
• Preserve the original value and record the rule version when using this result in an archival workflow.

• Format Obsolescence Watchlist Risk Score Rater

  Use Format Obsolescence Watchlist Risk Score Rater to apply a transparent local watchlist heuristic to format age, proprietary status, emulation dependence, and validation-tool availability. Choose this tool when you need to calculate a normalized 0–100 digitization priority score from significance, condition risk, demand, and nonnegative relative weights.

• Weighted Mean

  Use Weighted Mean to calculate an arithmetic mean using nonnegative observation weights. Choose this tool when you need to calculate a normalized 0–100 digitization priority score from significance, condition risk, demand, and nonnegative relative weights.