KGTK is a Python library for easy manipulation with #KnowledgeGraphs. It provides a flexible framework that allows chaining of common graph operations, such as: extraction of subgraphs, filtering, computation of graph metrics, validation, cleaning, generating embeddings, and more. https://kgtk.readthedocs.io/en/latest/

We are happy to welcome our new colleague Rafael Petronilo in our FIZ KDAI research team! Rafael originally comes from Portugal and is an expert in deep learning and knowledge graphs and we are very much looking forward to collaborate with him. He will be supporting our BMF project "Themenportal Wiedergutmachung nationalsozialistischen Unrechts"

@fiz_karlsruhe @lysander07 @MahsaVafaie @GenAsefa #AI #deeplearning #knowledgegraphs #semanticweb @bmf @LandesarchivBW

Makes my day🙂 Graph ML identifies promising additional drug indications for diseases such as acute lymphoblastic leukemia and Alzheimer’s disease.
https://www.nature.com/articles/s41551-025-01598-z
#KnowledgeGraphs #GraphML #DrugRepurposing

Reconciliation of triple stores and property graphs is an old topic and many have tried to tackle it (from every angle and tech). It's polarizing and the latest RDF-* and SPARQL-* announcements turn an already complex field into more syntax and complexity. When flexibility equals complexity it seldom leads to more adoption.
#GraphDatabases #RDF #KnowledgeGraphs
https://olafhartig.blog.liu.se/
https://www.ontotext.com/knowledgehub/fundamentals/what-is-rdf-star/

i wrote about some of the challenges with semantic mappings 🗺️

https://cthoyt.com/2026/01/20/semantic-mapping-challenges.html

#ontology #owl #rdf #sssom #semanticweb #knowledgegraphs #skos

NFDIxCS Soirée #10: LLMs for Scientific Clarity 🤖📚
How AI makes scientific literature more accessible (information extraction, FAIR publishing) + Q&A.
🗓 26 Jan 2026 · 17:30–18:00 CET
👉 https://nfdixcs.org/event/nfdixcs-soiree-10llms-for-clarity-how-ai-makes-scientific-literature-more-accessible
#NFDIxCS #LLM #FAIR #KnowledgeGraphs #NFDI

📣 ISWC 2026 Call for Papers, Submissions Open!

ISWC 2026 welcomes contributions on knowledge graphs, ontologies, RDF & SPARQL, reasoning & rules, SHACL/validation, semantic data integration, interoperability, entity linking, KG construction, provenance & trust, and more.

⏰ Abstract deadline: 2 May 2026 (AoE)
⏰ Paper deadline: 7 May 2026 (AoE)

https://iswc2026.semanticweb.org/#/

📍 Bari, Italy 🇮🇹, please repost to help reach potential authors!

#ISWC2026 #SemanticWeb #KnowledgeGraphs #SPARQL #LinkedData

The CfP for the 3rd International Workshop of Semantic Digital Humanities is out!
submission deadline for papers & panels: March 3, 2026
webpage: https://semdh.github.io/
Please spread the word! :)

#semanticweb #knowledgegraphs #AI #dh #digitalhumanities @nfdi4culture @NFDI4Memory @Textplus @nfdi4objects @tabea @sashabruns @epoz @jonatan @fiz_karlsruhe @fizise @sourisnumerique @eswc_conf #eswc2026 #semdh2026

We are happy to announce the release of the 1.2 version of OntoWeaver, the tool that sits on top of BioCypher and allows to easily make independent adapters parsing structure data, from just a simple declaration of a mapping: https://github.com/oncodash/ontoweaver/releases/tag/v1.2.0

The main new feature is adapters for structured documents: OWL (ontology files' populated graph), XML and JSON documents, and some new high-level information fusion functions.

The package is available on PyPI, now in the BioCypher community: https://pypi.org/project/ontoweaver/1.2.0/

#ontoweaver #biocypher #knowledgeGraphs #ontologies #semantic #biomedicine #science #freesoftware #python

Brad Bolliger came to knowledge graphs via enterprise system design and data analytics. That background informs their pragmatic approach to the use of semantic technology in systems that facilitate information exchange across government agencies.

I really appreciate Brad's thoughtfulness and ability to connect systems architectures to #knowledgeGraphs and #controlledVocabulary management. Hope you enjoy the conversation, too.

https://knowledgegraphinsights.com/brad-bolliger/

Our colleague @epoz has given a presentation at the KnowledgeCamp 2025 barcamp of the Gesellschaft für Wissensmanagement in Berlin with the title "From Data to Information and Knowledge", in which he tried to extoll the virtues of RDF and Linked Open Data, and our work in @nfdi4culture

https://www.youtube.com/watch?v=II7e27PyqbM&list=PLkqyX57M03TP7kfBpps9dCGAOrNT03vwK&index=9

#nfdi #rdm #ontologies #knowledgegraphs #semanticweb @NFDI4Memory @NFDI4DS #NFDIMatWerk @tabea @sourisnumerique @jonatan #GfWM @knowledgecamp

SSH researchers, there’s still time to take part in the #GRAPHIA survey on how you use #KnowledgeGraphs in your research.
Your insights will help shape GRAPHIA’s future features.
🕑It takes about 15 minutes, so don’t wait: the deadline is 16 January!
👉 https://docs.google.com/forms/d/e/1FAIpQLSf5BDE0Okrbz-9IWQWOR-AZD28sjB750rx8v_Bo9lTxPDaaOQ/viewform

There’s a tension between being semantically rich (using your own terms and definitions), and being semantically aligned, in which you try to reuse terms from other vocabularies.

I think we need a new concept: eventual #interoperability. I propose to start rich with your own vocabularies, and only make alignments when there’s a concrete reason for building those.

https://pietercolpaert.be/interoperability/2026/01/08/eventual-interoperability

#knowledgegraphs #apis #linkeddata #semantics

Yesterday, I had the honor to deliver an invited talk with the title "Convenience vs Competence: the Evolving Role of Foundational Knowledge in AI-Driven Research" at the new year's receiption of the computer science faculty at Friedrich-Schiller-Universität Jena. Very happy to be at the place again, where I did my first PostDoc more than 20 years ago and meeting many old friends. :)

@fiz_karlsruhe @fizise @jkbeetle #AI #NeurosymbolicAI #knowledgegraphs #ontologies @nfdi4culture @NFDI4DS

New research shows unified ontologies let agentic AI reason seamlessly across suppliers and regulators, boosting continuous learning and nested insights. Discover how LLMs, Google’s approaches, and Karp’s models converge in open‑source knowledge graphs. Dive into the details! #AgenticAI #Ontologies #KnowledgeGraphs #ContinuousLearning

🔗 https://aidailypost.com/news/unified-ontologies-enable-agentic-ai-reason-across-suppliers

Semantica is a semantic layer for knowledge engineering which promises to transform chaotic data into intelligent knowledge. A comprehensive OSS framework powering Knowledge Graph-Powered RAG (GraphRAG), AI Agents, Multi-Agent Systems, and AI applications with structured semantic knowledge.

100% Open Source • MIT Licensed • Production Ready • Community Driven https://github.com/Hawksight-AI/semantica
#GraphRAG #KnowledgeGraphs

🎬 DMKI Lab Highlights 2025

A snapshot of a year of research, collaborations, and community at the DMKI Lab (Data Management & Knowledge-Driven AI) at TU Wien.

Thanks to the team, collaborators, and partners — more to come in 2026!

#DMKILab #TUWien #KnowledgeGraphs #AI

We are happy to welcome our new colleague Dilek Yargan in the @fizise division. Dilek is a top expert for ontologies with a background in mathematics and philosophy. With her expertise, she will support the ontologies & knowledge graph team in the context of the Wiedergutmachung project.

https://www.fiz-karlsruhe.de/en/bereiche/lebenslauf-und-publikationen-dr-dilek-yargan

@fiz_karlsruhe @lysander07 @joerg @GenAsefa @MahsaVafaie #ontologies #knowledgegraphs #philosophy #semanticweb @bmf

@dccuchile ¡Muchas felicitaciones a Aidan! Él es un gran aporte al DCC y a la universidad. Él también ha hecho grandes aportes en la #SemanticWeb y los #KnowledgeGraphs.

Love when I accidentally discover my own TED Talk from 2021, casually titled 'The Future of Everything, Featuring Me'—just vibing in the algorithm. Anyway here’s 12 hashtags and a link no one will click. #knowledgegraphs #humblebrag #AI 📼✨