Observed Availability Measurement Standard
A reproducible definition for forward calendar pressure, including analytical unit, freshness, duplicate handling and language limits.
analytical unit
One listing or resolved home on one target night
standard forward windows
Calendar days from the observation date
maximum observation age
For recurring index inclusion
minimum nightly sample
Smaller nights are suppressed
Principal findings
What the evidence shows
The measure is an observed state.
A night shown as unavailable contributes to the unavailable share. The source does not reliably disclose whether it was reserved, blocked or otherwise withheld.
The horizon is part of the result.
A 30-day and a 90-day share answer different questions and must never be compared without carrying the window label.
Small nights are removed, not imputed.
If fewer than ten qualifying units remain on a target date, that night is excluded instead of filled with a modelled value.
Figure 1
From observed calendar to published index
The fixed transformation used for recurring forward-availability readings.
Reading note. The bars show sequence, not effect size.
Method
How this output was produced
- Define a fixed centre, radius or named collection footprint before observing the market.
- For each unit and target night, retain the latest observation no older than five days.
- Collapse confirmed duplicate representations before the market aggregate is calculated.
- For each night, divide unavailable qualifying units by all qualifying units and suppress n below ten.
- Average the published nightly shares across the declared 30-day or 90-day window.
Interpretation boundary
What this release cannot prove
- Unavailable is not a verified booking and should not be described as realised occupancy.
- Collection footprints are samples of a market and can omit supply.
- A source interface change can break comparability and requires a versioned method change.
Source register
Evidence and citation
Upgraded Intelligence (2026), Observed Availability Measurement Standard, version 1.0, UI-STD-AV-2026-01.
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