For a measure in a digest, the size of week-to-week change that counts as a movement: a stated multiple of the measure's own trailing variability, with a floor on the denominator and a cap on items per digest. Reviewed quarterly from the share of alerts acted on.
Five points is a large move in coverage and noise in pipeline coverage. Each measure gets its own.
Alerts rarely acted on loosen the threshold; movements missed tighten it.
For each measure, the size of period-to-period change that counts as a movement, set as a stated multiple of that measure's own normal variation.
Coverage normally moves by about one point a week, so its threshold is three points. Dormant value moves more and has a threshold of 10 percent.
One threshold for every measure. The noisy ones flag every week and the steady ones never do.