View of the train station. It is mostly empty and the sky is blue with some clouds.

This is Koblenz Hbf, the main train station in #Koblenz, #Germany. I am waiting for the train to Stuttgart. This is the third time @Ayenkantun and I visited Koblenz. This time we traveled to attend Philipp Seifer's PhD defense. I co-author several papers with […]

[Original post on mstdn.degu.cl]

ETSI clause 7 offers three schema options incl. ShaclSchemaCredential — formal RDF graph validation beyond JSON Schema.
Without Commission adaptations, two issuers can produce incompatible W3C-VC QEAA, both ETSI-compliant.
#SHACL #LinkedData #W3C

There are many benefits when the inference rules are included in the knowledge graph. One benefit is the decoupling of data and application. It lowers the cost of integration and the cost of change. Another is the improved data governance.

A third one is the gain in flexibility 👇📜

#RDF #SHACL

There are many benefits when the inference rules are included in the knowledge graph. One benefit is the decoupling of data and application. It lowers the cost of integration and the cost of change. Another is the improved data governance.

A third one is the gain in flexibility. 👇📜

#RDF #SHACL

Rules on Graphs in Graphs of Rules, Part 1 Inference rules are useful. They bring declarative expressivity — stating what follows from facts rather than how to compute it. But for users, their most salient feature is that they make queries…

📜 New essay on Link&Think

Rules are usually in the application layer.
With #SHACL rules, they can be part of the graph, and then, apart from simplicity and speed, they can bring other benefits coming from data-application decoupling.

Part 1 is now available.

www.linkandth.ink/p/rules-on-g...

It's SHACL, and not RVL · Issue #706 · w3c/data-shapes The abstract says "SHACL is a language for validating RDF graphs against a set of conditions" This is indeed an important use case and one that boosted this standard. But it is called SHACL and not...

#SHACL is SHACL, not RVL

github.com/w3c/data-sha...

Connected Data London 2025 A Talk by Ivo Velitchkov

Tired of the LLM noise? Let’s shift attention to something fully deterministic – rules running over a knowledge graph.

(now on the plane to London)

#SHACL #SPARQL
2025.connected-data.london/talks/rules-...

I have reviewed many #SHACL shape graphs over the last few years. There are some error patterns as well as exotic errors. And recently, I've noticed some very different patterns of LLM-generated errors. 🧵

Original post on fediscience.org

"Translating and Formalizing the MIRAGE Guidelines to a Prototype MIRAGE Ontology and DCAT3 Extension Vocabulary for Glycomics Data Management" https://doi.org/10.37044/osf.io/wj8bz_v1

"We present the first comprehensive semantic formalization of MIRAGE guidelines through an integrated RDF […]

The latest iteration of RDFGraphGen being presented to the world!

Check out the GitHub link for further info.

#RDF #SHACL #SyntheticData #KnowledgeGraphs

Maxime Jakubowski presenting our work on "RDFGraphGen: An #RDF Graph Generator based on #SHACL Shapes" at #IJCKG25.

Authors: Milos Jovanovik, Marija Vecovska, Maxime Jakubowski, Katja Hose

github: github.com/etnc/RDFGrap...

@mjovanovik.com
@maximejakubowski.bsky.social
@katjahose.bsky.social

SemWeb.Pro 2025 semwebpro, une journée de présentations et de rencontres dédiées au web sémantique dans le monde professionnel

📢 Demandez le programme !

Les inscriptions sont ouvertes pour #SemWebPro 2025 le 27 novembre à Paris, profitez du tarif réduit jusqu'à début octobre !

#semweb #websem #linkeddata #linkedopendata #knowledgegraph #thesaurus #ontology #RDF #SPARQL #SHACL #OWL #JSONLD
semweb.pro/conference/2...

📂 #RDF #Graph Gen: synthetic generator from #SHACL shapes. Fills dataset gaps & enables structured benchmarks ⚡
🔗 Link in first 💬⤵️

Repost 🔁 #AI #LLM #KnowledgeGraphs

#IEEE 2874-2025 - a #standard emerges for #AI #agents acting in real world based on #RDF like ever updating graphs, Hyperspace Modelling Language (#HSML) and #SHACL.

Links if first comment ⤵️

SHACL for the Practitioner This is the title of my upcoming book. And it’s all about the Shapes Constraint Language (SHACL). Expected release before November 1st 2025. The book is written and illustrated by Veronika He…

It's getting real! My book, SHACL for the Practitioner, is almost here. 😱 Secure your copy at veronahe.wordpress.com/shacl-for-th... 🌟

#shacl #rdf #owl #cwa #knowledgegraph

Today, I had the great pleasure of giving an introductory lecture on knowledge graphs at the #BILAI Summer School 2025 in Klagenfurt. Great energy and engagement!
#knowledgeGraphs #RDF #SHACL #SPARQL #LLM

www.bilateral-ai.net/doctoral-sch...

Honored to receive the IFIP TC2 Manfred Paul Award (2024) with Kashif Rabbani and @kuzeko.bsky.social for our VLDB 2022 paper on generating #SHACL shapes from large knowledge graphs. Scales to billions of triples, mining meaningful patterns using support and confidence.
www.vldb.org/pvldb/vol16/...

It's happening again.

👉 semweb.pro/conference/2...

Nb : vous avez jusqu'au 30 juin pour envoyer vos propositions de présentations !

#semwebpro #semweb #websem #opendata #linkeddata #linkedopendata #knowledgegraph #thesaurus #ontology #RDF #SPARQL #SHACL #OWL #JSONLD

European Parliament Open Data Portal : a SHACL-powered knowledge graph - Sparna Blog A second usecase Thomas wrote for Veronika Heimsbakk’s SHACL for the Practitioner upcoming book is about Sparna’s work for the European Parliament. From validation of the data in the knowledge graph t...

"From validation of the data in the #knowledgeGraph to further projects of data integration and dissemination, many different usages of #SHACL specifications were explored for @europarl.europa.eu 's #OpenData Portal"

Soon in @veronahe.bsky.social 's book ! 📖

blog.sparna.fr/2025/04/09/e...

Distinguish between UI and and non-UI property shapes · Issue #332 · w3c/data-shapes When a SHACL shapes graph is used to control the UI, there is a need to distinguish between property shapes created for form control and those created for validation only or meant to appear as fiel...

[proposal] How to distinguish between UI and non-UI property shapes in #SHACL · Issue #332 · w3c/data-shapes](github.com/w3c/data-sha...)

shacl-engine: Experimental SHACL 1.2 Features The experimental branch of shacl-engine is now introducing features related to the upcoming SHACL 1.2 specifications, along with some proposals still under discussion. These additions are in an early

I added support for some experimental SHACL 1.2. features in shacl-engine. See my blog post www.bergnet.org/2025/03/shac... for more details, and try it out on the SHACL Playground playground.rdf-ext.org/shacl-experi... #shacl

🔗 SHACL-SKOS Based Knowledge Representation of Material Safety Data Sheet (SDS) for the Pharmaceutical Industry

#rdf #shacl #skos #triples #semanticweb #cs #msds #safety #pharmaceuticals

Screenshot of `git diff --stat` in GitHub UI showing +166 -12,192

Finally removing v1 of our Upper ontology. Upper v2 has been live for quite some time now. #rdf #shacl #domain-model

Nakala : from an RDF dataset to a query UI in minutes - SHACL automated generation and Sparnatural - Sparna Blog Here is a usecase of an automated version of Sparnatural submitted as an example for Veronika Heimsbakk’s SHACL for the Practitioner upcoming book about the Shapes Constraint Language (SHACL). “ The S...

What is the best way to make a #Sparnatural #SHACL specification ? can we use an existing one directly ? does it require customization ? what if no SHACL spec exists at all ?

An example based on #HumaNum 's #Nakala graph.
Soon in @veronahe.bsky.social's book ! 📖

blog.sparna.fr/2025/02/06/n...

Ingénieur développeur Java – Bibliothèque Corese Offre d'emploi Inria

📢 Le Programme IA chez Inria recrute dans le Projet P16 un Ingénieur développeur Senior Java pour la bibliothèque Corese (linked data, knowledge graphs)

👥 Candidatez ici : jobs.inria.fr/public/class...

🔑 #RDF #RDFS #OWL #SHACL #SPARQL #LinkedData #KnowledgeGraphs

#Jobs.inria.fr #Emploi #Job

Sparnatural SHACL configuration : manual, automated, off-the-shelf - Sparna Blog Sparnatural is a knowledge graph visual browser made for end-users. The user is guided in the creation of her graph traversal query by selecting the kind of entities she is searching, how these entiti...

New article on Sparna's blog !
How to produce a #SHACL fully written configuration for #Sparnatural ? Let's discover three different ways : manual, automated, off-the-shelf to encode both the structure of the #knowledgegraph ➕ some additional UI-oriented information.
blog.sparna.fr/2025/01/21/s...

Another #SHACL course in #Brussels with participants from all over Europe.

It's nice to see that the interest is growing.
And now the work on the new version of SHACL has started: lists.w3.org/Archives/Public/public-s...

Which #SHACL Tools are still missing on this page? https://kvistgaard.github.io/shacl/#/page/shacl%20tools

#RDF

We are still interested in your thoughts on #RDF validation technologies! Please share your experiences in our survey: forms.gle/LdXsG644obcg...

If you are working with shape languages like #SHACL or #ShEx, your insights will help us advance the future of validation technologies.

RDF Shape Languages Survey How long does this survey take to fill in? Approximately 8 minutes. Please note that half of the questions are skippable. What is the purpose of the study? The purpose of the study is to gather empiri...

We are conducting a #survey to better understand the challenges, experiences, and practical applications of validating #RDF data using #SHACL and #ShEx.

Please help us get a better overview by sharing your insights:
forms.gle/LdXsG644obcg...

It only takes around 8 minutes.