Head·word /ˈhedˌwɜː(ɹ)d/ n. @headword

3 posts3 participants0 posts today

**Daniel Dobriy (Q112275832)** @semantic@w3c.social · 2d

Daniel Dobriy (Q112275832) @semantic@w3c.social

Thrilled to announce Roberto Navigli as Keynote Speaker at #RAGEKG 2025! Full Professor at the Sapienza University of Rome, founder of Babelscape, and pioneer #GraphRAG research!

Nov 2-3 | Nara, Japan
Details and CfP (open): https://2025.rage-kg.org

@iswc_conf @ragekg #AI #KnowledgeGraphs #LLM

**Harald Sack** @lysander07@sigmoid.social · 4d

Harald Sack @lysander07@sigmoid.social

Tomorrow, we will dive deeper into ontologies with OWL, the Web Ontology Language. However, I'm doing OWL-lectures now for almost 20 years - and OWL as well as the lecture haven't changed much. So, I'm afraid I'm going to surprise/dissapoint the students tomorrow, when I will switch off the presentation and start improvising a random OWL ontology with them on the blackboard ;-)

#ise2025 #OWL #semanticweb #semweb #RDF #knowledgegraphs @fiz_karlsruhe @fizise @tabea @sourisnumerique @enorouzi

Slide from the OWL slide deck of Information Service ENgineering 2025. An example for a nominal in OWL is depicted, i.e. a class that is defined by enumerating its members. The example is "MaddAddamTrilogyBook", which refers to a trilogy of novels by Margaret Atwood, It is defined to consist out of "Oryx and Crate, The Year of the Flood, and Madd Addam. The book covers of the three books are shown for an illustration.

**Harald Klinke** @HxxxKxxx@det.social · 5d *

5d *

Harald Klinke @HxxxKxxx@det.social

New case study on how LLMs support knowledge graph creation for historical bookbinding:
“Stitching History into Semantics” presents BookBindKG, a Neo4j-based framework for documenting 19th-century Greek bookbinding with LLM-generated ontologies, Cypher queries, and semantic reasoning.
Open access: https://www.mdpi.com/2504-4990/7/3/59

A graph database visualization showing a comprehensive bookbinding knowledge graph model with various nodes and relationships related to book attributes. The central node labeled "Book" is connected to multiple nodes representing different attributes, such as "Author," "Subject," and "TitleLanguage

#KnowledgeGraphs #DigitalHumanities #CulturalHeritage

**Victoria Stuart** @persagen@mastodon.social · Jun 26 *

Jun 26 *

Victoria Stuart @persagen@mastodon.social

How Does Graph Theory Shape Our World?
https://www.quantamagazine.org/how-does-graph-theory-shape-our-world-20250626

https://en.wikipedia.org/wiki/Graph_theory
Comments
* relational data/basis of knowledge graphs
* philosophy: Leibniz, 1714, monads, linking fundamental objects
https://en.wikipedia.org/wiki/Monadology

Quanta Magazine · Jun 26How Does Graph Theory Shape Our World? | Quanta MagazineMaria Chudnovsky reflects on her journey in graph theory, her groundbreaking solution to the long-standing perfect graph problem, and the unexpected ways this abstract field intersects with everyday life.

#math #GraphTheory #Monadology

**Harald Sack** @lysander07@sigmoid.social · Jun 25 *

Jun 25 *

Harald Sack @lysander07@sigmoid.social

In today's ISE 2025 lecture,, we will introduce SPARQL as a query language for knowledge graphs. Again, I'm trying out 'Dystopian Novels' as example knowledge graph playground. Let's see, if the students might know any of them. Wtat do you think? ;-)

#dystopia #literature #ise2025 #semanticweb #semweb #knowledgegraphs #sparql #lecture @tabea @sourisnumerique @enorouzi

Example knowledge graph for the ISE 2025 lecture. The novels represented in this graph are:
- George Orwell: Nineteeneightyfour
- Harry Harrison: Make Room! Make Room!
- Octavia E. Butler: Parable of the Sower

**Harald Sack** @lysander07@sigmoid.social · Jun 18

Jun 18

Harald Sack @lysander07@sigmoid.social

Back in the lecture hall again after two exciting weeks of #ESWC2025 and #ISWS2025. This morning, we introduced our students to RDF, RDFS, RDF Inferencing, and RDF Reification.

#ise2025 #semanticweb #semweb #knowledgegraphs #rdf #reasoning #reification #lecture @fiz_karlsruhe @fizise @KIT_Karlsruhe @sourisnumerique @tabea @enorouzi

Slide from the ISE 2025 lecture on Resource Descriptiuon Framework (RDF) as simple data model. The slide is showing a small knowledge graph, indicating that Climate Change was explained by Eunice Newton Foot in 1856 as well as by John Tyndall in 1859. To represent this n-ary (multi-valued) relations, we are using so-called blank nodes, representing an "explanation" each, which bundles the discoverer and the discovery date. This is done via "dereferencable" blank nodes here.

**Harald Sack** @lysander07@sigmoid.social · Jun 17

Jun 17

Harald Sack @lysander07@sigmoid.social

NFDI4DS is hosting its second Summer School on Artificial Intelligence and Knowledge Graphs for Scholarly Data (AIKG-SD 2025)

This year's theme: “Research Towards Sustainable Societies”

Keynotes & Interactive Tutorials
Networking
Poster Session & Best Poster Award

September 23/24, 2025
Leuphana University Lüneburg
Application deadline: June 27, 2025!

https://sites.google.com/view/aikg-sd-2025/home?authuser=0

#AI #summerschool @NFDI4DS #nfdirocks @GenAsefa @fizise @tibhannover #knowledgegraphs

AIKG-SD Summer School webpage, Artificial Intelligence
and Knowledge Graphs
for Scholarly Data
Two-Day Summer School
September 23 and 24, 2025
at Leuphana University Lüneburg

**isws** @isws@sigmoid.social · Jun 17

Jun 17

isws @isws@sigmoid.social

Students discussing (and probably some random tutors further back) during lunch break on the terrace of Bertinoro castle, last week.

The terrace at BErtinoro castle. There is a buffet which had already started previously. We can see some cookies, fruits (probably apricots) and a huge bowl of salad besides lots of plates and water bottles. Three students are discussing in the foreground while having lunch. In the background we can see more students (already seated) together with some assistant tutors and tutors, all in conversation while having lunch.

#isws2025 #summerschool #semanticweb

**isws** @isws@sigmoid.social · Jun 16

Jun 16

isws @isws@sigmoid.social

It's a wrap! ISWS 2025 was a huge success! 60 wonderful students, 5 brilliant assistant tutors, 11 extraordinary tutors, 3 magnificent keynoters, and 2 visionary & unassuming directors. We've had a great time together with all of you and hope, you've had a safe trip home!

#isws2025 #summerschool #semanticweb #semweb #knowledgegraphs AI #academiclife #bertinoro #PhD @fiz_karlsruhe @NFDI4DS

group picture: 60 students, 5 assistant tutors, 11 tutors, 2 keynoters and 2 directors, lined up and cheering to the camera!

**isws** @isws@sigmoid.social · Jun 15

Jun 15

isws @isws@sigmoid.social

Memories from the last night gala dinner, selfie with some of the ISWS 2025 tutors. It was such a great time! We are missing you all already!

#isws2025 #summerschool #semanticweb

**isws** @isws@sigmoid.social · Jun 15

Jun 15

isws @isws@sigmoid.social

Kudos to our assistant tutors!
Without you this summerschool would never have been possible! You've did a marvellous job! Thank you so much!!!

from left to right: Arianna Graciotti, Beatrice Fiumanò, Ebrahim Norouzi, Anna Sophia Lipolis, Harald Sack, Valentina Presutti, and Nicolas Lazarri

#isws2025 #summerschool #academiclife

**isws** @isws@sigmoid.social · Jun 15

Jun 15

isws @isws@sigmoid.social

Meet the ISWS 2025 tutors (left to right): Stefano di Grigoris, Sebastian Rudolf, Heiko Paulheim Aidan Hogan, Irene Celino, John Domingue, Claudia d'Amato, Valentina Presutti, Ian Christoph Kalo, Harald Sack, and Lise Stork

(left to right): Stefano di Grigoris, Sebastian Rudolf, Heiko Paulheim Aidan Hogan, Irene Celino, John Domingue, Claudia d'Amato, Valentina Presutti, Ian Christoph Kalo, Harald Sack, and Lise Stork at the end of ISWS 2025, standing lined up in the Fresco Room of Bertinoro Castle

#isws2025 #semanticweb #knowledgegraphs

**Daniel Mietchen** @EvoMRI@mastodon.social · Jun 12

Jun 12

Daniel Mietchen @EvoMRI@mastodon.social

The slides for my #lswt2025 talk "Knowledge graphs in the context of the National Research Data Initiative (NFDI)"
are up at
https://doi.org/10.5281/zenodo.15644994 .

Screenshot of the slides (in grid view), which are available in several formats via the indicated URL.

#knowledgegraphs #kgi4nfdi #openscience

**isws** @isws@sigmoid.social · Jun 12

Jun 12

isws @isws@sigmoid.social

Good morning ISWS 2025! It's day 04 of the summer school. Today, we are working on our research tasks and will have a relaxing afternoon at the swimming pool before we will be chasing deadlines tomorrow :)

Scenic view of beautiful Emilia Romagna in the morning, taken from the way uphill to to BErtinoro Castle.

#isws2025 #summerschool #semanticweb

**isws** @isws@sigmoid.social · Jun 11

Jun 11

isws @isws@sigmoid.social

Hororing the godfather of the international semantic web summer schools, Enrico Motta, with a "very special" prize...

On stage: Valentina Presutti, Enrico Motta, and Harald Sack, in front of Enrico Motta's honorary certificate for being the ISWS Godfather.

#isws2025 #godfather #semanticweb

**isws** @isws@sigmoid.social · Jun 11

Jun 11

isws @isws@sigmoid.social

Selfie time at ISWS, 2nd day minute madness. What else should you do, if you have 45 seconds time to introduce your poster and have some spare time left ;-)

selfie with all of the isws2025 participants taken during the minute madness session on stage in the theater of BErtinoro castle.

#isws2025 #semanticweb #summerschool

**isws** @isws@sigmoid.social · Jun 11

Jun 11

isws @isws@sigmoid.social

Next to the running group, there is also the morning yoga class with our yoga teacher Alice. Good thing for stress relief and getting new focus for a hard day of research.