Mike_Peel added a comment.
In https://phabricator.wikimedia.org/T105623#1660386, @daniel wrote:
> It seems like are are approaching an agreement on a few points:
>
> - it's nearly always wrong to assume absolute precision (+/-0) per default
> (notable exceptions are definitions and exact counts).
I don't think anyone was suggesting that. Using a default of 0 in the database
would be one way of recording that the uncertainty is unknown, not assuming
absolute precision.
> - it's important to apply rounding based on uncertainty (resp significant
> digits) when //converting//, to avoid the introduction of false precision
> ("spurious" digits). This applies to conversion for display and also to
> normalization for indexing/querying.
Agree
> - the //magnitude// of the uncertainty interval should be order of magnitude
> of the least significant digit (not twice that -- so +/-0.5, not +/-1).
Agree
> These are the most crucial points to me. Points that are still open are:
>
> - if no uncertainty is given in the input, should we derive and store it
> immediately? Or should we then store "unknown" uncertainty, and calculate the
> uncertainty interval when needed?
The latter, please.
> - should we should the uncertainty interval per default if it was not
> explicitly entered?
> - should we should the uncertainty interval per default if it is different
> from the one we would have guessed?
I think these got mangled?
> I think we should reach an agreement about these as soon as possible, to
> avoid more "bad" data in the database.
Agree
TASK DETAIL
https://phabricator.wikimedia.org/T105623
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To: Mike_Peel
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Liuxinyu970226, Snipre, Event, Ash_Crow, mgrabovsky, Micru, Denny, He7d3r,
Bene, Wikidata-bugs, Ricordisamoa, Kelson, MSGJ, Klortho, Wolfvoll, Aklapper,
aude
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