Tobi_WMDE_SW added a subscriber: Lydia_Pintscher.
Tobi_WMDE_SW added a comment.

Outcomes of the discussion with @daniel @janzerebecki @lydia_pintscher 
@adrianheine and @thiemowmde

First use case: Units are Wikidata Items
AGREEMENT: use URIs, no free-text units for now (Units are represented as URIs 
internally (usually URIs of Wikidata items))
AGREEMENT: no new entity-type for units
Example:
item for “meter” (Q11573) with labels (“metre”), etc.. and it has a statement 
with a special property “unit symbol” (P558, currently string, should later be 
multilingual)
AGREEMENT: put value of “unit symbol” into terms table (handling for special 
property should not be tangled to Wikibase too much)
NO AGREEMENT: have separate module for dealing with units VS. have it in 
Wikibase -> further discussion needed

Question: link unit-symbol to unit-item?
Via terms table? Via PropertySuggester?

comment by @aude: neither seems very nice, but don’t have another suggestion 
right now and perhaps the question isn’t very clear to me.

Question: where to put formatting rules?
first version: one rule per language (format string in message file, e.g. “$1 
$2”)

comment by @aude: the messages (i18n) system is well-suited for this (and think 
also performance-wise).

Question: How to render units?
e.g. m/s vs. <math>\frac{m}{s}</math>: have a simple version (= Unicode string) 
first

AGREEMENT: PropertySuggester needs to be adjusted/extended.

comment by @aude: details please...

Question: Requirements for a new derivation of the entity selector:
should return URIs
selector should be able to deal with non-local sources


TASK DETAIL
  https://phabricator.wikimedia.org/T86528

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To: Tobi_WMDE_SW
Cc: Lydia_Pintscher, thiemowmde, Tobi_WMDE_SW, JeroenDeDauw, JanZerebecki, 
adrianheine, aude, Snaterlicious, Aklapper, Stryn, daniel, Smalyshev, 
Wikidata-bugs



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