User talk ArchivesEdit

Share your experience and feedback as a Wikimedian in this global surveyEdit

WMF Surveys, 18:57, 29 March 2018 (UTC)

Reminder: Share your feedback in this Wikimedia surveyEdit

WMF Surveys, 01:40, 13 April 2018 (UTC)



I was about to revert your diff Special:Diff/683808736 on Lexeme:L2 but LydiaPintscher did it before me. A lexeme is a word inside "one and only one" language. If you add several languages, it's not an lexeme any more but an item, and we already have the Q item for that ;) (first (Q28469711) in this case).

Cdlt, VIGNERON (talk) 12:31, 23 May 2018 (UTC)

@VIGNERON:, ah, thanks. Sorry for adding noise; I was learning, and actually followed another item which had a translation, which someone asked about... thanks for fixing it. --Egon Willighagen (talk) 17:16, 23 May 2018 (UTC)
No problem. I just act quickly so nobody else would see the same mistake ;)
And if you have any question, feel free to ask on Wikidata talk:Lexicographical data or elsewhere.
Cdlt, VIGNERON (talk) 17:19, 23 May 2018 (UTC)


Beste Egon Willighagen,

Dank voor het terugdraaien van mijn onbeholpen bewerking op Mark van Loosdrecht. Oorzaak drank vermoedelijk ;-D
Iets anders: 'k Dacht een samenvoegverzoek te doen voor Tsingtao, maar kwam er net achter dat het onzin is. Kun je dat ook terugdraaien?
Zo kom je elkaar nooit tegen, dan weer een paar dagen achter elkaar meermaals.
Terzijde: is Egonw een sokpop van je? Zõ ja: is het niet lastig om onder twee bijna dezelfde namen te bewerken; zo nee: worden jullie twee weleens verward met elkaar?  Klaas `Z4␟` V:  10:13, 23 September 2018 (UTC)
Terugdraaien, dat is het mooie van een wiki, toch? Wat is er precies mis met Tsingtao? Als je hem wil deleten, kan je dat More -> "Request deletion" aanvragen. Ik heb die powers niet. Het probleem van meer dan 1 account is meer de werkdruk en daardoor gebrek aan tijd hoe ik dat fatsoenlijk kan oplossen... Mijn eerste Wikipedia accounts stammen uit de tijd voor de gezamelijke onderliggende account, en had een voor NL en de ander voor EN, en dat proberen te herstellen heeft er juist voor gezorgd dat ik er toen ook twee op NL had (of zo, het is lang geleden). Is het belangrijk dat ik dit oplos? --Egon Willighagen (talk) 10:49, 23 September 2018 (UTC)


Hallo Egon Willighagen, diese Änderung ist nicht hilfreich: d:Q415571 = CAS 11056-06-7 = Mischung aus 55 – 70 % Bleomycin A2 und 25 – 32 % Bleomycin B2 (siehe auch die Tabelle auf de:Bleomycine). Für Mischungen ist es letztlich überhaupt nicht sinnvoll, eine PubChem-CID anzugeben, auch ein einzelner InChIKey kann nur falsch (oder zumindest unvollständig) sein.

CID 456190 ist immerhin verknüpft mit CAS 11056-06-7, im Gegensatz zu CID 73355844. Sinnvoller wäre also gewesen, den InChIKey anzupassen und nicht die CID zu ändern.--Mabschaaf (talk) 20:00, 8 December 2018 (UTC)

  • Hi Mabschaaf, das versteh ich und Sie haben recht. Ich hab aber nicht den PubChem-CID ändert, aber nur zurückgesetzt. Sorry, my German is not good enough to reply completely in German. CAS numbers are not linked with PubChem numbers as strongly as they are with InChIKeys. PubChem has one identifier for on InChIKey: they must match. Clearly this needs to be cleaned up. But changing the PubChem CID without correcting the InChIKey too, is not the right way to do it. If you believe the InChIKey is wrong, please change that one too. I can check SciFinder tomorrow what the proper structure linked to the CAS number is. --Egon Willighagen (talk) 21:59, 8 December 2018 (UTC)
  • Oh, I also note Bleomycin (de:Bleomycin) and Bleomycine (de:Bleomycine) in the German Wikipedia... --Egon Willighagen (talk) 22:16, 8 December 2018 (UTC)
  • OK, it's a total mess. There is the compound class (bleomycines), the drug (bleomycin) which is a mixture (see Mabschaaf's comment), and the specific A1, A2, etc compounds. I will clean it up. --Egon Willighagen (talk) 22:24, 8 December 2018 (UTC)

choline alfoscerate (Q28529699)Edit

Hi Egon. Could you please check whether or not choline alfoscerate (Q28529699) (created by you) is a duplicate of Alpha-GPC (Q2706622)? --Leyo 01:05, 2 January 2019 (UTC)

@Leyo: OK, it's on my radar. The have different InChIKey's and it's the stereochemistry in which they differ. I'll try to clean it up later (checking all linked identifiers. --Egon Willighagen (talk) 08:04, 2 January 2019 (UTC)
Thank you. I am trying to resolve the issues listed there. --Leyo 12:59, 3 January 2019 (UTC)
@Leyo:, solved. See also --Egon Willighagen (talk) 11:32, 7 January 2019 (UTC)
Thank you. --Leyo 13:39, 7 January 2019 (UTC)

Please support the Sustainability Initiative!Edit

Please support the Sustainability Initiative!

Hello Egon Willighagen, I saw that you are one of the authors of the Greta Thunberg (Q56434717) item. Because I am looking for ways to reduce the environmental impact of Wikipedia itself, I wanted to ask you to check out the Sustainability Initiative and to add your name to the list of supporters so that I can show that many community members are behind this effort. Thanks! --Gnom (talk)

@Gnom:, thanks, done! I didn't know about this. Umm, can I also point you in return to then? This Feedback to Plan S is about to future of scholarly communication. Please have a look. It is my strong belief that we can do a lot by making our scholarly journals better, to better support open science, which at least would reduce the amount of (energy consuming) redundant research. We have two days left to get this Feedback co-signed by as many people as possible, before I need to submit it to cOAlition S. --Egon Willighagen (talk) 11:42, 4 February 2019 (UTC)

Your modification:Edit

Hello Egon Willighagen,

Why did you delete single value constraint (Q19474404) from MassBank accession ID (P6689) ? --Eihel (talk) 15:08, 24 April 2019 (UTC)

@Eihel:Because each compound can have one or more Massbank entries. Did I remove the wrong one?? --Egon Willighagen (talk) 15:23, 24 April 2019 (UTC)
Do you have an example? A component has a spectrometry with a single graph. In the caffeine example, it is only caffeine (no milk has been added Smile eye.png). If you think of ions, another Item must be in WD (or create one). If you think of different acetate, you can only add the strict compound with a single WD Item. etc. Attention, it is only the entries Massbank, not entries MONA or other: access from the URL and the RegEx given in the Property. Do not confuse with distinct values constraint (Q21502410)? Has anyone in Norman made several specetrometrics on a single substance? Several labs, yes, but only one Massbank ID must be available having the form of the RegEx given in MassBank accession ID (P6689). If multiple MassBank IDs exist for a single substance, one of the two must be out of date. --Eihel (talk) 16:04, 24 April 2019 (UTC)
The Massbank Access ID is not an identifier for the chemical, but for the record in the database. There can be multiple spectra in Massbank for caffeine, and there are. See for example I read the definitions of the two contraints again, and I think I got them right. So, each Massbank Accession ID can have only one compound, but each compound can have more than one accession ID. --Egon Willighagen (talk) 16:10, 24 April 2019 (UTC)
You are right, sorry for the inconvenience Face-blush.svg --Eihel (talk) 16:16, 24 April 2019 (UTC)
No problem at all! Peer review in action :) --Egon Willighagen (talk) 16:21, 24 April 2019 (UTC)

Community Insights SurveyEdit

RMaung (WMF) 17:38, 10 September 2019 (UTC)

Reminder: Community Insights SurveyEdit

RMaung (WMF) 19:54, 20 September 2019 (UTC)

Duplicate PubChem IDsEdit

I noticed that you created many chemical compound items on Sept 18 that have the PubChem ID listed twice ( Is there an easy way of removing the duplicates in an automated way, or do they need to be fixed manually? Regards, Edgar181 (talk) 15:35, 3 October 2019 (UTC)

Oh, carp. Sorry! I am not aware of an easy way. But I'll fix it. Thanks for the notice! --Egon Willighagen (talk) 15:46, 3 October 2019 (UTC)
@Edgar181: okay I think I got them all fixed now. Thanks again for point out the issue. --Egon Willighagen (talk) 09:46, 4 October 2019 (UTC)
That was quick. Thanks. Edgar181 (talk) 11:20, 4 October 2019 (UTC)


Item 70 million is yours! Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 12:00, 8 October 2019 (UTC)

Yeah, I know ;) --Egon Willighagen (talk) 12:02, 8 October 2019 (UTC)

your found in taxon statements from ReconEdit

Hi Egon, Found in taxon should have as value the set of all taxa where this is true, not one unimportant example. Otherwise I go through all substances in Mycobacterium tuberculosis and create statements too, see? I think the stmts are really bad, and you should remove them. --SCIdude (talk) 06:55, 20 October 2019 (UTC)

Hi @SCIdude:, I understand your point very well, and generally don't disagree, but I tend to disagree on the specific example: We want statements backed by literature and/or databases. It is not the task of Wikidata to infer knowledge and the resource I used did not make any claim beyond that specific species. Of course, if we find resources that some metabolite (water, phosphate, ions) are found in whole taxa, and that statement can be added at a higher level, and only then can statements for lower taxa be remove, IMHO. At this moment there are very few scholarly resources with machine-readable data that link metabolites with taxa. I love to continue talking. --Egon Willighagen (talk) 08:05, 20 October 2019 (UTC)
"not the task of Wikidata to infer knowledge" I disagree because WD allows such inference as long as it's documented and reproducible. That's why WD has based on heuristic (P887), and you can infer e.g. the gender of Peter Ustinov from the given name if you give based on heuristic (P887)-->deduced from given name (Q69652498) as reference. Maybe I should not have said "remove the statements" but better replace by improved statements, and you can do it. You can infer metabolites if you have enzymes that take them as substrate, and get the taxonomic range of the ortholog group of that enzyme. This method in general should get an item, and then you can use it with P887. I know you don't have the time, so I won't waste it further. --SCIdude (talk) 09:47, 20 October 2019 (UTC)
Okay, I think I missed what you want to infer it from. Even for enzymes this is tricky, let alone reactions. Can you give me more detail of the heuristic you have in mind? What would be the (referenced) input data? --Egon Willighagen (talk) 10:26, 26 October 2019 (UTC)

Asking for a letter of support to create a research unit in TunisiaEdit

Dear Sir,

I thank you for your efforts. We are managing to create a research unit called "Data Engineering and Semantics" in the University of Sfax, Tunisia. The purpose of this research unit is to gather Wikiresearchers from University of Sfax into a recognized research structure and have funding from Tunisian Ministry of Higher Education. In order to do that, we need to have a letter of support from institutions all over the world. I ask if you or the director of your research department can write a letter of support for us so that we can have our application approved. This will be acknowledged. --Csisc (talk) 14:27, 23 October 2019 (UTC)

I have never done a LoS for setting up a research group. The information I have so far about the plans are very minimal, and I have zero insight in the community and academic norms the group will uphold. At this moment I will refrain from writing a LoS. Even information about the staff I found hard to find (please provide QIDs and ORCIDs of all staff members). --Egon Willighagen (talk) 10:28, 26 October 2019 (UTC)

opinion neededEdit

Hi Egon, usually I can judge what's right and what's wrong but for this I need confirmation by an expert. This ChEBI entry has a structure of a Vitamin D derivate where the skeleton is different from all related structures I checked---the cyclohexylidene-ethylidene sits on a different position of the 6/5-ring than Vitamin D and derivates. It seems an error, yet they have this structure with name at PubChem and it's our 25,26-dihydroxyvitamin D (Q27161257), that's why I found it. Can you confirm it's wrong (instead of some tautomerism), or do you know someone who can confirm? --SCIdude (talk) 06:57, 1 November 2019 (UTC)

Interesting question, and I do not have a good answer for this at this moment. It's complex. Check this pathway to see some of the chemistry behind Vitamin D. Some of the complexity further originates that, like often in biology, terms are not used consistently. For the particular compound you mention, the name may simply include "vitamin d" in there because it is a breakdown compound of "vitamin D" (many vitamins have a weird compound name history anyway). ChEBI lists an article (PubMed:6286629) that may shed more light and likely will confirm the structure. --Egon Willighagen (talk) 08:29, 1 November 2019 (UTC)
I quickly checked SciFinder and that confirms the structure. --Egon Willighagen (talk) 08:33, 1 November 2019 (UTC)

Open access journalsEdit

Thanks for your work on and so many other things! In case you didn't see it, the Wikidata import referenced there is Wikidata_talk:WikiProject_Open_Access#Other_sources_to_import.

I'm currently editing many of the items you created years ago for DOAJ entries. Nemo 09:30, 6 November 2019 (UTC)

Re: Plz check for duplicatesEdit

Thank you Egon for the information. While revewing my last entries, I'm trying to merge two items (8-Chloro-1-octene and 8-Chlorooct-1-ene) but when attempting it I receive the following message: Currently only Qid/Lid is a valid input and I can't continue. Do you know how to solve it?--Fran Ara (talk) 09:25, 30 January 2020 (UTC)

Just solved it, using the Q-number instead of the item name. Thank you anyway.--Fran Ara (talk) 09:34, 30 January 2020 (UTC)

DSSTOX compound identifierEdit

I found that we do not have a property for this.--GZWDer (talk) 15:27, 30 January 2020 (UTC)

WikiCite Satellite Cologne 2020Edit

Hi Egon - you have added yourself to the list of people who are interested in the WikiCite Satellite Cologne 2020 meeting. The call for submissions is still open and we would love to see your contribution! Let me know if you have any questions. Best wishes!

Konrad Foerstner (talk) 18:18, 12 February 2020 (UTC)

WikiProject COVID-19 meetingEdit

Hello Egon,

How are you doing? Tomorrow (on Monday 20th ) we will have an open group in Google Meet to discuss the directions of the WikiProject COVID-19, decide priorities better to organize the next steps.

You are more than invited to join us if you would like (and have the time) !

The talk is scheduled for tomorrow 15 UTC, in this link:

You can find more about it, and perhaps add your name to the list, here: Wikidata:WikiProject_COVID-19/Project_meeting

Thank you very much!

All the best,

TiagoLubiana (talk) 23:50, 19 April 2020 (UTC)

Call Wikiproject COVID-19 tomorrow (Monday, May 4th)Edit

Hello Egon,

How are you doing?

I am here to invite you for the Wikiproject COVID-19 call tomorrow (Monday, May 4th). If you are able to meet, the call (in this link: will happen tomorrow at 15:00 UT.

As a note, 15:00 UTC is:

  • 11:00 AM in New York, USA
  • 12:00 AM in São Paulo, Brazil
  • 4:00 PM in Tunisia
  • 6:00 PM Eastern European Summer Time (EEST)

If you want, also feel free to add topics at the meeting page!

Cheers, TiagoLubiana (talk) 22:29, 3 May 2020 (UTC)

Call Wikiproject COVID-19 tomorrow (Monday, May 18th) =Edit

Hello Egon,

How are you doing?

I am here (once again)to invite you for the Wikiproject COVID-19 call tomorrow (Monday, May 18th).

Have you been working on COVID-19 related things in the past few weeks?

If you are able to meet, the call (in this link: will happen tomorrow at 15:00 UT.

As a note, 15:00 UTC is:

  • 11:00 AM in New York, USA
  • 12:00 AM in São Paulo, Brazil
  • 4:00 PM in Tunisia
  • 6:00 PM Eastern European Summer Time (EEST)

If you want, also feel free to add topics at the meeting page!

Cheers, TiagoLubiana (talk) 23:50, 17 May 2020 (UTC)

Wikiproject COVID-19 call tomorrow (1st of June)Edit

Hello, Egon,

How are you doing?

This is a friendly reminder of (and an invitation for) tomorrow's (Monday, 01 of June) Wikiproject meeting, at 15:00 UTC as usual, and at the usual link: .

I was wondering from the biological perspective, which are the gaps that you see on Wikidata (related to COVID-19, more specifically). I am thinking of ways how the project can be of greater help to the bio community.

If you want to add something to the agenda in advance, feel free to just edit Wikidata:WikiProject_COVID-19/Project_meeting.

I hope you can make it! :)


TiagoLubiana (talk) 20:39, 31 May 2020 (UTC)