Annual Report Output Metrics Rollup Aggregator
Roll up periodic output metrics such as quarterly accessions or reference counts into a count, total, mean, minimum and maximum for annual reporting.
Description
Aggregate periodic archival-program metrics into count, total, arithmetic mean, minimum, and maximum for annual reporting.
Roll up periodic output metrics such as quarterly accessions or reference counts into a count, total, mean, minimum and maximum for annual reporting.
When to use Annual Report Output Metrics Rollup Aggregator
- Aggregate periodic archival-program metrics into count, total, arithmetic mean, minimum, and maximum for annual reporting.
- 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.
How the calculation works
The mean weights every supplied period equally; monthly and quarterly values must not be mixed without prior normalization.
mean = sum(period values) / period count Interpreting the result
The mean weights every supplied period equally; monthly and quarterly values must not be mixed without prior normalization.
Assumptions and limitations
- Totals are meaningful only for additive metrics measured in the same unit and covering non-overlapping periods.
- Preserve the original value and record the rule version when using this result in an archival workflow.