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Dr. rer. nat. Arnab Sharma

Senior Researchers

Office
F1.301

Research Interest

My research interests include but are not limited to,

  • Robustness in graph machine learning
  • Explainable machine learning
  • Inductive knowledge graph embedding
  • Security in graph machine learning

Projects

Publications

When Confidence Turns Against You: Exploiting Link Prediction Scores for Data Poisoning

By Adel Memariani, Arnab Sharma, Michael Röder, Axel-Cyrille Ngonga Ngomo

The 25th International Conference on Knowledge Engineering and Knowledge Management, 2026, #inproceedings

Rethinking Explanations: Formalizing Contrast in Description Logics

By Yasir Mahmood, Arnab Sharma, Axel-Cyrille Ngonga Ngomo, Balram Tiwari

Explainable Artificial Intelligence - Fourth World Conference, xAI 2026, Proceedings, 2026, #inproceedings

Evaluating Noisy Optimization in Finetuning LMs for Neural Ranking

By Daniel Vollmers, Arnab Sharma, Axel-Cyrille Ngonga Ngomo

NLDB 2026, 2026, #inproceedings

Mind The Margins: Probing Link Prediction via Perturbations

By Adel Memariani, Arnab Sharma, Michael Röder, Axel-Cyrille Ngonga Ngomo

35th ACM International Conference on Information and Knowledge Management (CIKM 2026), 2026, #inproceedings

Link Prediction Under Non-targeted Attacks: Do Soft Labels Always Help?

By Adel Memariani, Michael Röder, Arnab Sharma, Caglar Demir, Axel-Cyrille Ngonga Ngomo

The Semantic Web - ISWC 2025 - 24th International Semantic Web Conference, Nara, Japan, November 2-6, 2025, Proceedings, Part I, 2025, #inproceedings

Parameter Averaging in Link Prediction

By Rupesh Sapkota, Caglar Demir, Arnab Sharma, Axel-Cyrille Ngonga Ngomo

Proceedings of the Knowledge Capture Conference 2025 (K-CAP '25), 2025, #inproceedings

Inference over Unseen Entities, Relations and Literals on Knowledge Graphs

By Caglar Demir, N'Dah Jean Kouagou, Arnab Sharma, Axel-Cyrille Ngonga Ngomo

ECAI Workshops, 2024, #inproceedings

When Confidence Turns Against You: Exploiting Link Prediction Scores for Data Poisoning

By Adel Memariani, Arnab Sharma, Michael Röder, Axel-Cyrille Ngonga Ngomo

The 25th International Conference on Knowledge Engineering and Knowledge Management, 2026, #inproceedings

Rethinking Explanations: Formalizing Contrast in Description Logics

By Yasir Mahmood, Arnab Sharma, Axel-Cyrille Ngonga Ngomo, Balram Tiwari

Explainable Artificial Intelligence - Fourth World Conference, xAI 2026, Proceedings, 2026, #inproceedings

Evaluating Noisy Optimization in Finetuning LMs for Neural Ranking

By Daniel Vollmers, Arnab Sharma, Axel-Cyrille Ngonga Ngomo

NLDB 2026, 2026, #inproceedings

Mind The Margins: Probing Link Prediction via Perturbations

By Adel Memariani, Arnab Sharma, Michael Röder, Axel-Cyrille Ngonga Ngomo

35th ACM International Conference on Information and Knowledge Management (CIKM 2026), 2026, #inproceedings

Link Prediction Under Non-targeted Attacks: Do Soft Labels Always Help?

By Adel Memariani, Michael Röder, Arnab Sharma, Caglar Demir, Axel-Cyrille Ngonga Ngomo

The Semantic Web - ISWC 2025 - 24th International Semantic Web Conference, Nara, Japan, November 2-6, 2025, Proceedings, Part I, 2025, #inproceedings