daniel added a comment.
It seems like are are approaching an agreement on a few points:
- it's wrong to assume absolute precision (+/-0) per default
- 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.
- the //magnitude// of the uncertainty interval should be order of magnitude of
the least significant digit (not twice that -- so +/-0.5, not +/-1).
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?
- 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?
TASK DETAIL
https://phabricator.wikimedia.org/T105623
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To: daniel
Cc: Mike_Peel, Jc3s5h, thiemowmde, kaldari, daniel, Stryn, Lydia_Pintscher,
Liuxinyu970226, Snipre, Event, Ash_Crow, mgrabovsky, Micru, Denny, He7d3r,
Bene, Wikidata-bugs, Ricordisamoa, Kelson, MSGJ, Klortho, Wolfvoll, Aklapper,
aude
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