| matej_suchanek renamed this task from "e5baaaaaaa" to "Export original TeX string of math values in RDF". matej_suchanek raised the priority of this task from "High" to "Needs Triage". matej_suchanek removed projects: TCB-Team, Mail, New-Editor-Experiences, Language-2018-Apr-June, KartoEditor, JADE, Hashtags, Gamepress, Tamil-Sites, Connected-Open-Heritage-Batch-uploads (RAÄ-KMB_1_2017-02), CheckUser, Discovery. matej_suchanek updated the task description. (Show Details) |
CHANGES TO TASK DESCRIPTION
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, we only export the MathML representation of a formula to RDF/Wikidata Query Service, not the original TeX string (T126349). This makes it impossible to efficiently query for statements with a certain math value – you have to use `REGEX` (`CONTAINS` is not enough, because the TeX annotation embedded in the MathML is not identical to the original TeX string). It also means that any external application that wants to use the TeX string based on the RDF export must use an XML parser to analyze the MathML and extract the TeX annotation.
See T126349#2014848 for more information.
----
I think we should add full value nodes for math values, with a structure a bit like this:
```lang=sparql
wd:Q4115189 a wikibase:Item;
# ...
wdt:P2534 "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"block\" alttext=\"{\\displaystyle a}\">\n <semantics>\n <mrow class=\"MJX-TeXAtom-ORD\">\n <mstyle displaystyle=\"true\" scriptlevel=\"0\">\n <mi>a</mi>\n </mstyle>\n </mrow>\n <annotation encoding=\"application/x-tex\">{\\displaystyle a}</annotation>\n </semantics>\n</math>"^^<http://www.w3.org/1998/Math/MathML>.
wd:Q4115189 p:P2534 wds:Q4115189-af122b69-484b-2edd-1af8-f0a691b05039.
wds:Q4115189-af122b69-484b-2edd-1af8-f0a691b05039 a wikibase:Statement;
ps:P2534 "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"block\" alttext=\"{\\displaystyle a}\">\n <semantics>\n <mrow class=\"MJX-TeXAtom-ORD\">\n <mstyle displaystyle=\"true\" scriptlevel=\"0\">\n <mi>a</mi>\n </mstyle>\n </mrow>\n <annotation encoding=\"application/x-tex\">{\\displaystyle a}</annotation>\n </semantics>\n</math>"^^<http://www.w3.org/1998/Math/MathML>;
psv:P2534 wdv:d961720c22709f7991be5be0ddf51c88.
wdv:d961720c22709f7991be5be0ddf51c88 a wikibase:MathValue;
wikibase:mathML "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"block\" alttext=\"{\\displaystyle a}\">\n <semantics>\n <mrow class=\"MJX-TeXAtom-ORD\">\n <mstyle displaystyle=\"true\" scriptlevel=\"0\">\n <mi>a</mi>\n </mstyle>\n </mrow>\n <annotation encoding=\"application/x-tex\">{\\displaystyle a}</annotation>\n </semantics>\n</math>"^^<http://www.w3.org/1998/Math/MathML>;
wikibase:mathTeX "a"^^<http://latex.example/TODO>.
```
Side note: the “math” datatype currently seems to be missing completely from the [RDF Dump Format](https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format) page – once we’ve implemented this, we should rectify that.
---
See also the discussion on the [request a query](https://www.wikidata.org/wiki/Wikidata:Request_a_query#Defining_formula_(P2534%29) page.
See T126349#2014848 for more information.
----
I think we should add full value nodes for math values, with a structure a bit like this:
```lang=sparql
wd:Q4115189 a wikibase:Item;
# ...
wdt:P2534 "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"block\" alttext=\"{\\displaystyle a}\">\n <semantics>\n <mrow class=\"MJX-TeXAtom-ORD\">\n <mstyle displaystyle=\"true\" scriptlevel=\"0\">\n <mi>a</mi>\n </mstyle>\n </mrow>\n <annotation encoding=\"application/x-tex\">{\\displaystyle a}</annotation>\n </semantics>\n</math>"^^<http://www.w3.org/1998/Math/MathML>.
wd:Q4115189 p:P2534 wds:Q4115189-af122b69-484b-2edd-1af8-f0a691b05039.
wds:Q4115189-af122b69-484b-2edd-1af8-f0a691b05039 a wikibase:Statement;
ps:P2534 "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"block\" alttext=\"{\\displaystyle a}\">\n <semantics>\n <mrow class=\"MJX-TeXAtom-ORD\">\n <mstyle displaystyle=\"true\" scriptlevel=\"0\">\n <mi>a</mi>\n </mstyle>\n </mrow>\n <annotation encoding=\"application/x-tex\">{\\displaystyle a}</annotation>\n </semantics>\n</math>"^^<http://www.w3.org/1998/Math/MathML>;
psv:P2534 wdv:d961720c22709f7991be5be0ddf51c88.
wdv:d961720c22709f7991be5be0ddf51c88 a wikibase:MathValue;
wikibase:mathML "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"block\" alttext=\"{\\displaystyle a}\">\n <semantics>\n <mrow class=\"MJX-TeXAtom-ORD\">\n <mstyle displaystyle=\"true\" scriptlevel=\"0\">\n <mi>a</mi>\n </mstyle>\n </mrow>\n <annotation encoding=\"application/x-tex\">{\\displaystyle a}</annotation>\n </semantics>\n</math>"^^<http://www.w3.org/1998/Math/MathML>;
wikibase:mathTeX "a"^^<http://latex.example/TODO>.
```
Side note: the “math” datatype currently seems to be missing completely from the [RDF Dump Format](https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format) page – once we’ve implemented this, we should rectify that.
---
See also the discussion on the [request a query](https://www.wikidata.org/wiki/Wikidata:Request_a_query#Defining_formula_(P2534%29) page.
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To: matej_suchanek
Cc: Esc3300, mkroetzsch, Tagishsimon, Debenben, Smalyshev, Physikerwelt, Lucas_Werkmeister_WMDE, Lahi, Gq86, GoranSMilovanovic, Maosef, QZanden, EBjune, merbst, LawExplorer, Jonas, Xmlizer, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, fredw, Pkra, Manybubbles, scfc, Mbch331, AndyTan, Zylc, 1978Gage2001, Darkminds3113, herron, Chicocvenancio, alanajjar, Tbscho, Lea_WMDE, Mattias_Ostmar-WMSE, Avner, JJMC89, Gehel, Jseddon, Ryuch, Mkdw, RuyP, JEumerus, FloNight, Trizek-WMF, KasiaWMDE, 0x010C, srodlund, Luke081515, grin, Bsadowski1, mys_721tx, Snowolf, Huji, Gryllida, jayvdb, Tobi_WMDE_SW, revi, He7d3r, Romaine, Jay8g, Glaisher, Krenair, chasemp
Cc: Esc3300, mkroetzsch, Tagishsimon, Debenben, Smalyshev, Physikerwelt, Lucas_Werkmeister_WMDE, Lahi, Gq86, GoranSMilovanovic, Maosef, QZanden, EBjune, merbst, LawExplorer, Jonas, Xmlizer, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, fredw, Pkra, Manybubbles, scfc, Mbch331, AndyTan, Zylc, 1978Gage2001, Darkminds3113, herron, Chicocvenancio, alanajjar, Tbscho, Lea_WMDE, Mattias_Ostmar-WMSE, Avner, JJMC89, Gehel, Jseddon, Ryuch, Mkdw, RuyP, JEumerus, FloNight, Trizek-WMF, KasiaWMDE, 0x010C, srodlund, Luke081515, grin, Bsadowski1, mys_721tx, Snowolf, Huji, Gryllida, jayvdb, Tobi_WMDE_SW, revi, He7d3r, Romaine, Jay8g, Glaisher, Krenair, chasemp
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