Katja Hose
@katjahose.bsky.social
420 followers 170 following 24 posts
Professor at TU Wien (Austria); research on #dataManagement and #queryOptimization with a focus on #graphs and #knowledgeGraphs https://www.dbai.tuwien.ac.at/staff/khose
Posts Media Videos Starter Packs
Reposted by Katja Hose
semantics-conf.bsky.social
🕵️‍♂️ RDF detectives on the case! Maxime Jakubowski, Dominik Tomaszuk & Katja Hose are bridging the gaps in RDF validation at #SEMANTiCS2025. Don’t let data inconsistencies slip through!

#SemanticWeb #RDF #DataQuality #KnowledgeGraphs
Reposted by Katja Hose
dmki.bsky.social
Maxime Jakubowski presented the paper "Bridging Gaps in RDF Validation – Insights and Innovation Opportunities in RDF Validation Practices" at SEMANTiCS 2025 (@semantics-conf.bsky.social) in Vienna, Austria.

Authors: M. Jakubowski, D. Tomaszuk, K. Hose

Paper: ebooks.iospress.nl/doi/10.3233/...
Reposted by Katja Hose
pvldb.bsky.social
Vol:18 No:12 → Smart SPARQL Advisor: Guiding Users in Query Formulation with Performance Prediction
👥 Authors: Abiram Mohanaraj, Matteo Lissandrini, Katja Hose
📄 PDF: https://www.vldb.org/pvldb/vol18/p5295-mohanaraj.pdf
Thumbnail: Smart SPARQL Advisor: Guiding Users in Query Formulation with Performance Prediction
katjahose.bsky.social
Honored to have received a Distinguished Associate Editor Award at @vldb.bsky.social 2025!

It was a pleasure to contribute to the review process, and I'm truly grateful for the recognition.

Congratulations to all awardees!

#VLDB2025
katjahose.bsky.social
🎓 Congrats to Tobias Zeimetz on a successful PhD defense and his work on "Hybrid and Quality Aware Federations of Linked Data Fragment Interfaces and Traditional RESTful Web APIs".

It was a pleasure serving on the committee with his supervisor Ralf Schenkel. We even made it onto the Doktorhut!
Reposted by Katja Hose
pvldb.bsky.social
Vol:18 No:8 → The Limits of Graph Samplers for Training Inductive Recommender Systems
👥 Authors: Theis Jendal, Matteo Lissandrini, Peter Dolog, Katja Hose
📄 PDF: https://www.vldb.org/pvldb/vol18/p2496-jendal.pdf
Thumbnail: The Limits of Graph Samplers for Training Inductive Recommender Systems
katjahose.bsky.social
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...
Reposted by Katja Hose
pvldb.bsky.social
Vol:18 No:6 → PlanRGCN: Predicting SPARQL Query Performance
👥 Authors: Abiram Mohanaraj, Matteo Lissandrini, Katja Hose
📄 PDF: https://www.vldb.org/pvldb/vol18/p1621-mohanaraj.pdf
Thumbnail: PlanRGCN: Predicting SPARQL Query Performance
katjahose.bsky.social
Looking forward to discussing our work on graph transformation at #SIGMOD2025

📍 Poster Session 2
🗓️ Wednesday, June 25 | 16:00–17:30

Lossless Transformation of Knowledge Graphs to Property Graphs using Standardized Schemas
Kashif Rabbani, @kuzeko.bsky.social, Angela Bonifati, @katjahose.bsky.social
katjahose.bsky.social
Is there a best poster award that this one could win?
Engage!
katjahose.bsky.social
📢 We're hiring a #PhD student at @tuwien.at for a project on Knowledge-Graph driven Factuality and Explainability in LLMs for conversational data analytics.
🌍 Funded by #MSCA #ARMADA_DN
📅 Apply by June 30, 2025
🔗 lnkd.in/dX2ZWtj8
#LLM #KnowledgeGraphs #Factuality #DataAnalytics
katjahose.bsky.social
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/...
Reposted by Katja Hose
matrig.net
📣 Join us at IBM Research for a PhD position on Reliable Multimodal LLMs, combining language, vision & advanced reasoning!

Located in Zurich🇨🇭 & co-supervised by @katjahose.bsky.social at TU Vienna🇦🇹 as part of the cool new MSCA ARMADA Doctoral Network

Apply at www.zurich.ibm.com/careers/2025...
🧪
Banner of the ARMADA website:
"ARMADA
Reliable Conversational Domain-specific
Data Exploration and Analysis"
katjahose.bsky.social
Sure, I'm happy to prepare a submission for the journal "Orthopedics and Tissue Engineering".

???

Sometimes I really wonder how my contact details could possibly have ended up in such mailing lists...
Reposted by Katja Hose
sigmod2025.bsky.social
⚠️ ⚠️ ⚠️ ⚠️ ⚠️ Dear SIGMOD community and attendees please be aware that there are an increasing number of scam and phishing emails that pretend to contact you on behalf of the SIGMOD organization. Companies, such as Global Travel Experts or Travel Housing are not affiliated with SIGMOD.
Reposted by Katja Hose
mjovanovik.com
Status update on the TARGET Data Platform, developed by our team at TU Wien (@tuwien.at).

Prof. Katja Hose (@katjahose.bsky.social) presenting the details and numbers we have so far, as part of the TARGET project (@target-horizoneu.bsky.social).

#TARGETProject #HealthTech #DigitalHealth
katjahose.bsky.social
Feeling honored to have received an #EDBT2025 distinguished meta-reviewer award.
katjahose.bsky.social
Happy to share that my colleague Camillo Merkel, together with Kyle Deeds, has just received the #ICDT25 Best Paper Award as well as the #ICDT25 Best Student Paper Award, for their paper "Worst-Case Optimal Joins Meet Partition Constraints". Congratulations!
katjahose.bsky.social
D. Mottin & M. Lissandrini presenting "Towards Reliable Conversational Data Analytics"at #EDBT2025
Authors: S. Amer-Yahia, J. Bogojeska, R. Facchinetti, V. Franceschi, A. Gionis, K. Hose, G. Koutrika, R. Kouyos, M.Lissandrini, S. Maniu, K. Mirylenka, D. Mottin, T. Palpanas, M. Rigotti, Y. Velegrakis
katjahose.bsky.social
Proudly watching Martin Pekar presenting "Fantastic Tables and Where to Find Them: Table Search in Semantic Data Lakes" at #EDBT2025,
authors: Martin Pekar Christensen, Aristotelis Leventidis, @kuzeko.bsky.social, Laura Di Rocco, Renée J. Miller, Katja Hose

openproceedings.org/2025/conf/ed...
katjahose.bsky.social
#EDBT2025 has just officially started with the opening ceremony and a warm welcome by the general chairs, Oscar Romero and Anna Queralt, and the program chairs, Bettina Kemme and Alkis Simitsis.

Looking forward to enjoying the program during the next couple of days.

@edbticdt.bsky.social
katjahose.bsky.social
I am looking for a PhD student in graph data management and analysis.

Application deadline:
April 3, 2025

More details:
jobs.tuwien.ac.at/Job/244015

#hiring #PhDposition #knowledgegraphs #graphData
University Assistant (Prae-Doc)
jobs.tuwien.ac.at
Reposted by Katja Hose
olafhartig.bsky.social
In a recent #Dagstuhl seminar we developed a research roadmap towards Computer-Using Personal Agents (CUPAs), automating complex tasks like today's Computer-Using Agents, but including context via controlled access to personal knowledge graphs. Our vision paper: openaccess.city.ac.uk/id/eprint/34...
City Research Online - Towards Computer-Using Personal Agents
openaccess.city.ac.uk
Reposted by Katja Hose
arxiv-cs-cl.bsky.social
Ernests Lavrinovics, Russa Biswas, Johannes Bjerva, Katja Hose
Knowledge Graphs, Large Language Models, and Hallucinations: An NLP Perspective
https://arxiv.org/abs/2411.14258
Reposted by Katja Hose
jasonkoebler.bsky.social
Scoop: The databases powering DOGE.gov are insecure, and people outside the government have already pushed their own updates to the site to prove it:

www.404media.co/anyone-can-p...
Anyone Can Push Updates to the DOGE.gov Website
"THESE 'EXPERTS' LEFT THEIR DATABASE OPEN."
www.404media.co