Data Science Research Group with a focus on #knowledgegraphs @unipb. #linkeddata #machinelearning #webscience #openscience #NLG
Paderborn, Germany
Joined June 2017
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“When Confidence Turns Against You: Exploiting Link Prediction Scores for Data Poisoning” by Adel Memariani, Arnab Sharma, Michael Röder & @NgongaAxel was presented by Adel at #EKAW2026.
📖 bibsonomy.org/bibtex/0940ba8…
#DICEontour #EKAW2026 #KnowledgeGraphs #DataPoisoning #AI
🏅 Best Paper nomination at #EKAW2026!
“MARS: Multi-hop Adaptive Retrieval and SPARQL Generation for KGQA” by N. Srivastava, D. Vollmers, R. Speck, N. Karalis, @hamadazahera & @NgongaAxel.
📖bibsonomy.org/bibtex/878ad53…
#DICEontour #KnowledgeGraphs #QuestionAnswering
Two more papers presented by Arnab Sharma at SEMANTiCS 2026 in Ghent!
👉 "Parameterized Fuzzy Negation for Complex Query Answering over Knowledge Graphs" by Sourabh Kapoor, Arnab Sharma, Stefan Heindorf, @_CaglarDemir & @NgongaAxel 📖 bibsonomy.org/bibtex/2a12cb0…
(1/2)
👉 "Tokenizing the Graph: Attentive Byte-Pair Encoding for Knowledge Graph Embeddings" by N'Dah Jean Kouagou, Arnab Sharma, Harshit Purohit, Caglar Demir & Axel Ngonga.
📖 bibsonomy.org/bibtex/236d839…
Great Work!🥳
(2/2)
#DICEontour #SEMANTiCS2026
"Ontology-Aware Prompting for Knowledge Graph Construction from Text" by Balram Tiwari, Italo Lopes Oliveira, @affia007, @hamadazahera, Frank Hopfgartner & @NgongaAxel, presented by Italo @SemanticsConf 2026 in Ghent!
Full paper: bibsonomy.org/bibtex/b14e3e9…
#DICEontour #SEMANTiCS2026
🤩 Our colleague Duygu Ekinci Birol presented "ASTRA: Adaptive Structure-Aware Post-Hoc Alignment of Knowledge Graph Embeddings" (co-authored by @MAhmedSherif, @kouagou_dah & @NgongaAxel at #ECMLPKDD2026 in Naples!
👉 Link to paper: bibsonomy.org/bibtex/7b7ac8c…
#DICEontour
🙌 "ATLAS: Adaptive Attribute-Aware Post-Hoc Alignment of Knowledge Graph Embeddings" by Duygu Ekinci, @kouagou_dah, @MAhmedSherif and @NgongaAxel has been accepted at IEEE ICDM 2026 (Nov 12–15, Shenyang, China)! 👏 Congratulations to all authors!
#DICE #ICDM2026
🤩Papers from our group have been accepted at international conferences.
👉"Neural Regression with Embeddings for Numerical Attribute Prediction in Knowledge Graphs" by Rupesh Sapkota, @louismozart2, Moshood Yekini, @_CaglarDemir & @NgongaAxel at #WISE2026, Venice (Nov 1–5)
(1/3)
👉 "Mind the Margins: Probing Link Prediction via Perturbations" by Adel Memariani, Arnab Sharma, Michael Röder, and @NgongaAxel was accepted at #CIKM2026, Rome (Nov 7–11)
(2/3)
👉 "PT2PR: A Benchmark for Multimodal Patent-to-Product Retrieval" by Lia Shahnazaryan and @StefanHeindorf also at #CIKM2026
👏 Congratulations to all authors — in bocca al lupo! 🐺🇮🇹 (that's how Italians wish good luck!)
(3/3)
#DICE #WISE2026 #CIKM2026 #KnowledgeGraphs #AI
📖 Our work on the NEBULA project is now published as a book chapter with Springer Nature! 🥳
"Automatic Detection of Dis- and Misinformation using Shallow Knowledge Graphs" by @UQudus, @MichaDerStudent and @NgongaAxel is part of (1/2)
"Cybersicherheit und Desinformation", exploring how knowledge graphs and RAG can support scalable, explainable fact-checking to protect vulnerable groups from misinformation.
➡️Read the chapter here: doi.org/10.1007/978-3-658-52…
#DICE #KnowledgeGraphs #FactChecking
(2/2)
🌊 We're on a roll! Three papers from our group have been accepted @iswc_conf!
Congratulations to all authors - ci vediamo a Bari! 🇮🇹
👉 "SECEA: Self Configuring Matcher Framework For Entity And Knowledge Graph Alignment" by Alexander Becker, @MAhmedSherif & @NgongaAxel
(1/2)
👉 "LYRA: Belief-Driven Scalable Class Expression Learning in Description Logics" by @Amgad Abdulmaqsod, @MAhmedSherif, Arnab Sharma, @Yaa_Siir & @NgongaAxel
👉 "RangeFC: Interval-Aware Temporal Fact Checking for Knowledge Graph" by @UQudus, @MichaDerStudent & @NgongaAxel
(2/2)
🌍 Our colleague @Yaa_Siir presented "Rethinking Explanations: Formalizing Contrast in Description Logics" by Yasir Mahmood, Arnab Sharma, @NgongaAxel and Balram Tiwari at #XAI2026 in Fortaleza, Brazil!
🔎Read the preprint here: arxiv.org/abs/2605.01442
#DICEontour
🌏 @NgongaAxel and Arnab Sharma travelled to India to build bridges for German-Indian research collaboration, visiting ISI Kolkata and IIT Kharagpur with talks, meetings, and promising ideas for future joint projects!🤝
#DICEontour #Research #ISIKolkata #IITKharagpur
🎉 Our paper "Ontology-Aware Prompting for Knowledge Graph Construction from Text" by B. Tiwari, I. Lopes Oliveira, @affia007, @hamadazahera, F. Hopfgartner & @NgongaAxel has been accepted at #SEMANTiCS2026 in Ghent/Belgium (September 15–17)! 👏Congratulations to all authors!
Our colleague Daniel Vollmers presented "Evaluating Noisy Optimization in Finetuning LMs for Neural Ranking" by Daniel Vollmers, Arnab Sharma & @NgongaAxel at #NLDB2026 in Trondheim/Norway.🤩
Read the full paper: bibsonomy.org/bibtex/cac89db…
#DICEontour #NLP #InformationRetrieval
🌐 DICE was represented with 5 papers at the 23rd European Semantic Web Conference (ESWC 2026) in Dubrovnik, Croatia (May 10–14)!
Congratulations to all authors and thank you to the organizers for a wonderful conference! 🙌
#ESWC2026 #SemanticWeb #KnowledgeGraphs #DICEontour
📢 Two paper acceptances at international conferences!
👉 "Diversity of Extensions in Abstract Argumentation" by Johannes Fichte, Markus Hecher, Yasir Mahmood, and Zhengjun Wang has been accepted at IJCAI-ECAI 2026 (Bremen, August 15–21, 2026). (1/2)