An Introduction to RDF and SPARQL 1.2

https://www.w3.org/Talks/2025/iswc-tutorial-rdfsparql-12/

The order of presentations for the "S15: KGs and LLMs" session has been changed. The first presentation was changed to a video presentation and then moved to the last.
#iswc2025

In her keynote at #ISWC2025, Yuko Harayama, Secretary General of Global Partnership on AI Tokyo Expert Support Center, is discussing the challenges of #AI on Human Society, suggesting a shift from originally tech-driven to human-centered paradigm, addressing key questions related to #ethics, #law, #economy, #society, #education, and R&D

#semanticweb #generativeAI #AIethics #AIpolicy #knowledgegraphs #llms #reliableAI

I am one of the local organizing committee members of #ISWC2025 and today's Karaoke Party!
We have received many more requests to participate in the karaoke party than we expected, so we may need to split into multiple venues if one location cannot accommodate everyone.
Additionally, at the karaoke venue, we will need to divide everyone into groups of approximately 8 people and split them across multiple rooms.
Thank you in advance for your understanding.

Day 2 at #ISWC2025 in #Nara is buzzing!

Workshops, tutorials & the #DoctoralConsortium in full swing — packed with learning, mentoring & collaboration.

Amazing energy from our #SemanticWeb community! 🙌

#KnowledgeGraphs #AI #SemanticWeb #LLM #RAG #Ontology

@anligentile @maribelacosta @K_e_n_F @GenAsefa

The coffee served changes every day. Enjoy!
#ISWC2025

The WiFi SSID and password are written on the paper in the conference bag.
#ISWC2025

It seems there's no coffee at the coffee break area in the morning.
There is a Family Mart (convenience store) near the venue. You can buy coffee there in the morning.
#ISWC2025

1-2 Days: Workshops, Tutorials, Semantic Web Challenges, and Dagstuhl Sessions
3-5 Days: Main Conference
#ISWC2025

ISWC 2025 proceedings are now available with free online access.

https://iswc2025.semanticweb.org/#/program/acceptedpapers

The long version is available on arXiv.
https://arxiv.org/abs/2503.21804

Our paper has been accepted to the 7th International Knowledge Graph and Semantic Web Conference (KGSWC-2025).

Title: Comparison of Metadata Representation Models for Knowledge Graph Embeddings

https://kgsw.org/accepted_papers.php

https://iswc2025.semanticweb.org/#/sponsorship/sponsorshippackages
#ISWC2025 #KnowledgeGraphs #AI #generativeAI

Heijō-kyō Palace Tempyo Procession will be held during the #iswc2025
https://tenpyosai.jp/

Heijō-kyō was the capital of Japan 1,300 years ago.
This event starts at Nara Station and ends at Tōdai-ji temple.

Tōdai-ji is one of the world's largest wooden structures, and one of the places you should definitely visit when you come to Nara.

I'm currently on paternity leave.

How will the Model Context Protocol (MCP) change the Semantic Web and Linked Data? Is this being discussed anywhere?
I think that application developers who have accessed SPARQL endpoints using REST will start using MCP.
I think triplestores will continue to be used inside MCP servers, and more developers can access triplestores easily.
#mcp #sparql #rdf

Comparison of Metadata Representation Models for Knowledge Graph Embeddings

Shusaku Egami, Kyoumoto Matsushita, Takanori Ugai, Ken Fukuda
https://arxiv.org/abs/2503.21804 https://arxiv.org/pdf/2503.21804 https://arxiv.org/html/2503.21804

arXiv:2503.21804v1 Announce Type: new
Abstract: Hyper-relational Knowledge Graphs (HRKGs) extend traditional KGs beyond binary relations, enabling the representation of contextual, provenance, and temporal information in domains, such as historical events, sensor data, video content, and narratives. HRKGs can be structured using several Metadata Representation Models (MRMs), including Reification (REF), Singleton Property (SGP), and RDF-star (RDR). However, the effects of different MRMs on KG Embedding (KGE) and Link Prediction (LP) models remain unclear. This study evaluates MRMs in the context of LP tasks, identifies the limitations of existing evaluation frameworks, and introduces a new task that ensures fair comparisons across MRMs. Furthermore, we propose a framework that effectively reflects the knowledge representations of the three MRMs in latent space. Experiments on two types of datasets reveal that REF performs well in simple HRKGs, whereas SGP is less effective. However, in complex HRKGs, the differences among MRMs in the LP tasks are minimal. Our findings contribute to an optimal knowledge representation strategy for HRKGs in LP tasks.

🌟 Call for Research Track Papers for ISWC 2025!! 🌟
ISWC 2025 is now accepting submissions for the research track! Get all the details here 👉 https://iswc2025.semanticweb.org/
Don’t miss this opportunity! We would like to see you in Japan!
Any questions? Feel free to reach out to -> Daniel Garijo and Sabrina Kirrane
#ISWC2025 #Semantics #AI #SemanticWeb #LLM #Japan

🌟 Call for Resource Track Papers for ISWC 2025!! 🌟
ISWC 2025 is now accepting submissions for the resource track! Get all the details here 👉 https://iswc2025.semanticweb.org/
Don’t miss this opportunity! We would like to see you in Japan!
Any questions? Feel free to reach out to -> Cogan Shimizu and Angelo Salatino

#ISWC2025 #Semantics #AI #SemanticWeb #LLM #Japan

🌟 Call for In Use Track Papers for ISWC 2025!! 🌟
ISWC 2025 is now accepting submissions for the in use track! Get all the details here 👉 https://iswc2025.semanticweb.org/
Don’t miss this opportunity! We would like to see you in Japan!
Any questions? Feel free to reach out to -> Maribel Acosta and Andrea Giovanni Nuzzolese
#ISWC2025 #Semantics #AI #SemanticWeb #LLM #Japan