- From: Pieter Colpaert <pieter.colpaert@ugent.be>
- Date: Thu, 18 Dec 2025 10:53:20 +0100
- To: "public-treecg@w3.org" <public-treecg@w3.org>
Hi all, We’ve had an end of the year meeting: Attendees: Xueying Deng, Thomas Bergwinkl, Ranko Orlic, Julián Rojas and myself Minutes: ## Discovery Julián is working on a query shape subsumption algorithm to do discovery based on SHACL shapes. https://dishacled.github.io/discovery-specification/#algorithm ==> an implementation is on-going and this can then be used as input for a client algorithm for the TREE CG. ## Test framework https://github.com/TREEcg/specification/pull/154 Julián is slowly going to test this by implementing it in a TREE client for geospatial querying ## SHACL based relations SHACL profiles are coming, so that we can constrain SHACL constraints and can decide what we put into a SHACL based relation and what we don’t (e.g., conditionals can make it very complex). Current proposal lives in this comment: https://github.com/TREEcg/specification/issues/115#issuecomment-3652159450 Very positive reactions to this proposal... but this means we will have 2 ways of doing the same thing. We propose working on versioning the spec (next point) We will also need to discuss what to do with geospatial and substring relations: can they be taken over by a node shape relation? It’s unsure (Christophe Debruyne did some work though: https://www.smalsresearch.be/download/presentations/2021-06-07-geoshacl.pdf) ## Versioning and ambitions Let’s try to finish: 1. the MEA algorithm in a light version in line with the LDES spec 2. the 1.0 test cases and throw out the discovery note at this moment. Then we can publish a 1.0 TREE CG final report early in 2026. Afterwards we can then start a 2026-2027 trajectory in which we try to publish a 2.0 final report in which we: 1. Try to solve discovery 2. Introduce SHACL-based relations and deprecate existing TREE relations 3. Integrate with the RDF Messages proposal of the RSP CG: https://w3c-cg.github.io/rsp/spec/messages ## AoB * https://github.com/TREEcg/specification/issues/155 → we replied here * We booked new meetings, now always at 10 am on a Thursday. Check the calendar! Kind regards, Pieter -- https://pietercolpaert.be +32486747122
Received on Thursday, 18 December 2025 09:53:28 UTC