Re: The OWL file

We were just discussing about the effort needed to encode in OWL the 
semantics described in natural language of ActivityStreams2, in 
particular those in https://www.w3.org/TR/activitystreams-vocabulary/

On 20/03/25 22:38, Aaron Gray wrote:
> What are you actually trying to describe ? Sorry I have lost the 
> thread as everyone is top posting.
>
> On Thu, 20 Mar 2025 at 19:06, Cristiano Longo 
> <cristianolongo@opendatahacklab.org> wrote:
>
>     It depends on how much one intend to go in deep. For example, I
>     already produced some constraints that describe membership and
>     paging of collection, but I have been unable to envisage a model
>     theoretic semantics for the activity ADD and REMOVE as it would
>     require to represent the time ordering of activity of this type.
>
>     On 20/03/25 19:51, Melvin Carvalho wrote:
>>
>>
>>     čt 20. 3. 2025 v 19:39 odesílatel Cristiano Longo
>>     <cristianolongo@opendatahacklab.org> napsal:
>>
>>         Thank you very much, I fond this that is really specific
>>
>>         https://nlnet.nl/opensocial/
>>
>>         However just 50K euro will be funded, so that just one or two
>>         person would be involved.
>>
>>         Now I have to understand if, in the case I got this grant,
>>         how I should interact with the official Activity Pub charter.
>>
>>         However, on monday I'll have a meeting at my university to
>>         discuss about this grant and other opportunities.
>>
>>
>>     Unsure making an OWL file would be alot of effort.  I would
>>     imagine a perfect professional document costing in the range of
>>     5k, and could be done in a few weeks.
>>
>>         CL
>>
>>         On 18/03/25 09:53, Melvin Carvalho wrote:
>>>
>>>
>>>         út 18. 3. 2025 v 9:27 odesílatel Cristiano Longo
>>>         <cristianolongo@opendatahacklab.org> napsal:
>>>
>>>             I'm going to look for any funding for this. Any
>>>             suggestion about an appropriate funding source and
>>>             scheme will be appreciated. Also, proposals for
>>>             collaborations with other institutions are welcome.
>>>
>>>
>>>         I would recommend NLNet, they are very generous with funding:
>>>
>>>         https://nlnet.nl/propose/
>>>
>>>             CL
>>>
>>>             On 04/10/24 10:11, Melvin Carvalho wrote:
>>>>
>>>>
>>>>             pá 4. 10. 2024 v 10:03 odesílatel Cristiano Longo
>>>>             <cristianolongo@opendatahacklab.org> napsal:
>>>>
>>>>                 The OWL file have to be mantained and enriched, as
>>>>                 reported in
>>>>                 https://lists.w3.org/Archives/Public/public-swicg/2023Dec/0014.html
>>>>
>>>>                 I don't know if it is appropriate that the
>>>>                 community group work on this.
>>>>                 And, if so, I'm not sure if this should be
>>>>                 mentioned in the document
>>>>                 under discussion or it could emerge later as a work
>>>>                 item.
>>>>
>>>>                 I'm sorry but I cannot attend the today meeting.
>>>>
>>>>             It’s the machine-readable vocabulary for ActivityPub.
>>>>             Could we perhaps just call it the *Schema*, *Vocab*, or
>>>>             *Ontology* for ActivityPub, instead of "OWL"? OWL
>>>>             stands for Ontology Web Language, and that’s a bit less
>>>>             intuitive for most folks.
>>>>
>>>>             In the linked data world, a schema is essential, and it
>>>>             should be referenced in the context. The context itself
>>>>             isn’t meant for definitions—it’s more of an
>>>>             intermediary between the specific JSON format (or
>>>>             "profile") and the schema.
>>>>
>>>>             There was quite a bit of work done on the schema during
>>>>             the Working Group, but at some point, the link to it
>>>>             seems to have been broken—intentionally or not. I think
>>>>             it would be a valuable task to restore that connection
>>>>             and make the ActivityPub schema fully compliant with
>>>>             W3C standards again.
>>>>
>>>>
>>>>                 CL
>>>>
>>>>                 On 08/12/23 17:38, Evan Prodromou wrote:
>>>>                 > The original development file for AS2 was an OWL
>>>>                 file.
>>>>                 >
>>>>                 > I don't think it was ever edited after James
>>>>                 Snell created the first
>>>>                 > JSON-LD context file.
>>>>                 >
>>>>                 > But it's been in the Activity Streams 2.0
>>>>                 repository on GitHub since
>>>>                 > it was created.
>>>>                 >
>>>>                 > We get occasional requests to make changes to it
>>>>                 to bring it into line
>>>>                 > with the JSON-LD context doc. Some LinkedData
>>>>                 developers seem to
>>>>                 > prefer using it.
>>>>                 >
>>>>                 > We had a new issue filed this week about it, and
>>>>                 on the issue triage
>>>>                 > call we came up with a novel solution: move the
>>>>                 file to its own
>>>>                 > repository in the SWICG namespace, and let people
>>>>                 who are interested
>>>>                 > in using and maintaining it work on the project.
>>>>                 >
>>>>                 > The new repository is here:
>>>>                 >
>>>>                 > https://github.com/swicg/activitystreams2-owl
>>>>                 >
>>>>                 > Big appreciation to Emelia Smith for getting the
>>>>                 process rolling.
>>>>                 > We've already had one PR applied.
>>>>                 >
>>>>                 > I had removed the file from the
>>>>                 w3c/activitystreams repo, but Ben
>>>>                 > Goering pointed out that it probably needed more
>>>>                 consensus and a
>>>>                 > discussion here.
>>>>                 >
>>>>                 > So, let's discuss!
>>>>                 >
>>>>                 > I'd love to see this unofficial file maintained
>>>>                 and updated. I think
>>>>                 > moving it to a repo where people in the LD
>>>>                 community can maintain it
>>>>                 > is a great solution.
>>>>                 >
>>>>                 > Evan
>>>>                 >
>>>>                 >
>>>>
>
>
> -- 
> Aaron Gray - @AaronNGray@fosstodon.org | @aaronngray@threads.net | 
> @AaronNGray@Twitter.com
>
> Independent Open Source Software Engineer, Computer Language 
> Researcher and Designer, Amateur Type Theorist, Amateur Computer 
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>

Received on Friday, 21 March 2025 10:39:47 UTC