Skip to content
ML Academy

Introduced on day 6

Coverage check

A data-quality test that compares the rows present per entity and period with the rows that should exist, so missing records are not mistaken for zero activity.

In detail

Build the expected calendar (for example every flight x every operating day), count present rows per route and month, and flag shortfalls. A missing row and a zero look identical in a SUM, so a gap in a feed reads as a demand drop. Coverage checks need a reliable definition of what should exist (schedules, cancellations).