Peter F. Patel-Schneider

Welcome to Wikidata, Peter F. Patel-Schneider!

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Best regards! --Tobias1984 (talk) 15:54, 19 October 2015 (UTC)

Further reading

You might also be interested in some of the RfCs (both commenting on new ones and reading the old ones): Wikidata:Requests_for_comment. --Tobias1984 (talk) 15:51, 21 October 2015 (UTC)

@Tobias1984: Thanks. I have been reading them and have already made some comments.

I just noticed and was reading some of them. It seems you already have a lot of background knowledge and will transition quickly into this ecosystem. Did you also look at the Wikidata:Property proposal subpages? There are always some good discussions about modelling going on there. --Tobias1984 (talk) 18:50, 21 October 2015 (UTC)

Ships and boats

Hi Peter, last week you did several changes to ship-related items like inland waterway vessel (Q863970) and museum ship (Q575727). In the result, now the inland cargo vessels like c:File:Hannover binnenschiff leer 02.jpg now are derived from boat instead of ship (Q11446). In German, inland waterway vessel (Q863970) refers to "Binnenschiff" which means "inland vessel" so I think the former subclass of ship are better than from boat. Should we create a new class of "Invalnd vessel" or should we use inland waterway vessel (Q863970) with a broader english description of "inland vessel" (like the other languages) or ... ? -- Gerd Fahrenhorst (talk) 10:07, 13 August 2023 (UTC)

Hi Peter, you now created a new class inland waterway vessel (Q121365935) and modified Europaship (Q1375735). This is not good solution because now all the interwiki links to river ships (=inland vessels) remain on inland waterway vessel (Q863970) and it is uncertain what the difference to inland waterway vessel (Q121365935) is. Please let us discuss a proper solution before continuing! Gerd Fahrenhorst (talk) 12:37, 13 August 2023 (UTC)

The problem with inland waterway vessel (Q863970) (which used to be called riverboat) was that it was a subclass of ship (Q11446) but it appeared that most of its subclasses were actually classes of boat (Q35872). So, as part of improving the ship/boat situation in general, it was changed to be a subclass of boat (Q35872). See the discussion in https://www.wikidata.org/wiki/Wikidata_talk:WikiProject_Ships#problems_with_ship_types and subsequent topics. An alternative way to go would be to generalize the class to a watercraft type (inland waterway vessel) and create new subclasses for river boats and river ships. But creating a class that is a subclass of both boat and ship isn't a workable solution, as the two classes are mostly disjoint. @Vicarage Peter F. Patel-Schneider (talk) 16:42, 14 August 2023 (UTC)

Works for me Vicarage (talk) 17:06, 14 August 2023 (UTC)

metaclasses documentation

Hello, Peter. My English is not native so I have some difficulties in understanding. Can you please elaborate what do you mean by "These implicit instance of (P31) statements are not all observable in Wikidata."? Infovarius (talk) 19:10, 24 August 2023 (UTC)

@Infovarius It's similar to the implicit instance of (P31) relationships that come from subclass of (P279) links, e.g., Douglas Adams (Q42) is implicitly an instance of mammal (Q110551885) even though the relationship is not (directly) observable in Wikidata. The difference is that the instance of (P31) relationships between, for example, human (Q5) and class (Q16889133) can't even be found by following links that exist in Wikidata so they are in some sense less observable. Nonetheless the relationship follows from the meanings of human (Q5) and class (Q16889133). Peter F. Patel-Schneider (talk) 19:22, 24 August 2023 (UTC)

Sulfoxides

Could you elaborate this edit? You did not add any reason for deprecated rank (P2241) qualifier and AFAIK only compounds with sulfinyl group substituted with two organyl groups are considered sulfoxides, while compounds with other groups are classified in different classes. Wostr (talk) 23:58, 14 December 2023 (UTC)

@Wostr I was working from octasulfur monoxide (Q73246974) which, as far as I can see, is not organic. This causes a disjointness violation between organic compound and inorganic compound. See chemical compound for the disjointness.

As well, the English description of sulfinyl (Q1747806) is "chemical compound containing the sulfinyl group" and sufinyl is "functional group consisting of sulfur double-bonded to oxygen". So carbon is not mentioned at all.

So, two indications that the relationship is incorrect. I suppose I should have just deleted it, but I decided to only deprecate it.

If the description is incorrect then it needs to be changed and the incorrect subclasses need to be fixed up.

What reason for deprecated rank could be used for situations like this? Peter F. Patel-Schneider (talk) 00:12, 15 December 2023 (UTC)

Thanks for quick response and this explanation, I'll check it later with the sources, but right now: (1) I believe that octasulfur monoxide (Q73246974)subclass of (P279)sulfoxide (Q408395) is not correct; maybe there is some class that would better describe such an entity, but I can't come up with it quickly; (2) all sulfoxides have sulfinyl (Q1747806), but not all compounds with this group are sulfoxides; usually inorganic compounds with this group are called 'thionyl compounds', like thionyl chloride (Q409171); however, after this edit, we have 'thionyl compounds' as an alias of 'sulfoxides', while in the same time we have this separately (cf. Q8852386) in some Wikimedia projects; (3) I believe that sulfoxides are exclusively organosulfur compounds and that deprecated statement had a correct 'normal' rank, but I won't revert this now, I'll check if there are any other problems with subclasses of sulfoxide (Q408395) and try to fix this later; (4) I didn't know what was the reason for your edit and this deprecation, so I couldn't propose any reason for deprecated rank (P2241) value for this situation; given your explanation I'd say that possibly invalid entry requiring further references (Q35779580) or does not always apply (Q90177495) could be okay here (probably with an explanation on a discussion page) – but as I said, I will check this later and try to fix this issue as it can be a problem with many more items. Wostr (talk) 00:41, 15 December 2023 (UTC)

Invitation to participate in the WQT UI requirements elicitation online workshop

Dear Peter_F._Patel-Schneider,

I hope you are doing well,

We are a group of researchers from King’s College London working on developing WQT (Wikidata Quality Toolkit), which will support a diverse set of editors in curating and validating Wikidata content.

We are inviting you to participate in an online workshop aimed at understanding the requirements for designing effective and easy-to-use user interfaces (UI) for three tools within WQT that can support the daily activities of Wikidata editors: recommending items to edit based on their personal preferences, finding items that need better references, and generating entity schemas automatically for better item quality.

The main activity during this workshop will be UI mockup sketching. To facilitate this, we encourage you to attend the workshop using a tablet or laptop with PowerPoint installed or any other drawing tools you prefer. This will allow for a more interactive and productive session as we delve into the UI mockup sketching activities.

Participation is completely voluntary. You should only take part if you want to and choosing not to take part will not disadvantage you in any way. However, your cooperation will be valuable for the WQT design. Please note that all data and responses collected during the workshop will be used solely for the purpose of improving the WQT and understanding editor requirements. We will analyze the results in an anonymized form, ensuring your privacy is protected. Personal information will be kept confidential and will be deleted once it has served its purpose in this research.

The online workshop, which will be held on April 5th, should take no more than 3 hours.

If you agree to participate in this workshop, please either contact me at kholoud.alghamdi@kcl.ac.uk or use this form to register your interest https://forms.office.com/e/9mrE8rXZVg Then, I will contact you with all the instructions for the workshop.

For more information about my project, please read this page: https://king-s-knowledge-graph-lab.github.io/WikidataQualityToolkit/

If you have further questions or require more information, don't hesitate to contact me at the email address mentioned above.

Thank you for considering taking part in this project.

Regards Kholoudsaa (talk) 17:00, 19 March 2024 (UTC)