Dr. Hamada Zahera

Senior Researchers

hamada.zahera@uni-paderborn.de

Matrix (Chat)

@zahera:chat.dice-research.org

Phone

+49 5251 605194

Fax

+49 5251 603436

Office

TP6.3.101

Projects

DAIKIRI – Diagnostische KI für industrielle Daten embeddings.cc – Universal Knowledge Graph Embeddings ENEXA – Efficient Explainable Learning on Knowledge Graphs LOLA – An Open-Source Massively Multilingual Large Language Model PORQUE – Polylingual Hybrid Question Answering

Publications

ELEVATE-ID: Extending Large Language Models for End-to-End Entity Linking Evaluation in Indonesian

By Ria Hari Gusmita, Asep Fajar Firmansyah, Hamada M. Zahera, Axel-Cyrille Ngonga Ngomo

Data & Knowledge Engineering, 2026, #article

Contextual Augmentation for Entity Linking using Large Language Models

By Daniel Vollmers, Hamada M. Zahera, Diego Moussallem, Axel-Cyrille Ngonga Ngomo

COLING 2025, 2025, #article

ANTS: Abstractive Entity Summarization in Knowledge Graphs

By Asep Fajar Firmansyah, Hamada M. Zahera, Mohamed Ahmed Sherif, Diego and Moussallem, Axel-Cyrille Ngonga Ngomo

Semantic Web – 22nd International Conference, ESWC 2025, Portoroz, Slovenia, June 1-5, 2025, Proceedings, 2025, #inproceedings

Multilingual Relation Extraction: A Survey

By Manzoor Ali, René Speck, Hamada M. Zahera, Muhammad Saleem, Diego Moussallem, Axel-Cyrille Ngonga Ngomo

IEEE Access, 2025, #article

Benchmarking Knowledge Editing using Logical Rules

By Tatiana Moteu Ngoli, N'Dah Jean Kouagou, Hamada M. Zahera, Axel-Cyrille Ngonga Ngomo

The Semantic Web -- ISWC 2025, 2025, #inproceedings

LOLA - An Open-Source Massively Multilingual Large Language Model

By Nikit Srivastava, Denis Kuchelev, Tatiana Moteu Ngoli, Kshitij Shetty, Michael Röder, Hamada M. Zahera, Diego Moussallem, Axel-Cyrille Ngonga Ngomo

Proceedings of the 31st International Conference on Computational Linguistics, COLING 2025, Abu Dhabi, UAE, January 19-24, 2025, 2025, #inproceedings

Error Analysis of Multilingual Language Models in Machine Translation: A Case Study of English-Amharic Translation

By Hizkiel Mitiku Alemayehu, Hamada M. Zahera, Axel-Cyrille Ngonga Ngomo

Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing, 2024, #inproceedings

Universal Knowledge Graph Embeddings

By N'Dah Jean Kouagou, Caglar Demir, Hamada M. Zahera, Adrian Wilke, Stefan Heindorf, Jiayi Li, Axel-Cyrille Ngonga Ngomo

Companion Proceedings of the ACM on Web Conference 2024, 2024, #inproceedings

MST5 -- Multilingual Question Answering over Knowledge Graphs

By Nikit Srivastava, Mengshi Ma, Daniel Vollmers, Hamada Zahera, Diego Moussallem, Axel-Cyrille Ngonga Ngomo

To appear, 2024, #article

Enhancing Answers Verbalization using Large Language Models

By Daniel Vollmers, Parth Sharma, Hamada M. Zahera, Axel-Cyrille Ngonga Ngomo

SEMANTiCS2024, 2024, #inproceedings

UniQ-Gen: Unified Query Generation across Multiple Knowledge Graphs

By Daniel Vollmers, Nikit Srivastava, Hamada M. Zahera, Diego Moussallem, Axel-Cyrille Ngonga Ngomo

EKAW 2024, 2024, #inproceedings

Generating SPARQL from Natural Language Using Chain-of-Thoughts Prompting

By Hamada M. Zahera, Manzoor Ali, Mohamed Ahmed Sherif, Diego Moussallem, Axel-Cyrille Ngonga Ngomo

Knowledge Graphs in the Age of Language Models and Neuro-Symbolic AI - Proceedings of the 20th International Conference on Semantic Systems (SEMANTiCS), 17-19 September 2024, Amsterdam, The Netherlands, 2024, #inproceedings

Document reRanking using GAT-Cross Encoder

By Daniel Vollmers, Manzoor Ali, Hamada M. Zahera, Axel-Cyrille Ngonga Ngomo

To appear, 2024, #article

Using Pre-trained Language Models for Abstractive DBPEDIA Summarization: A Comparative Study

By Hamada M. Zahera, Fedor Vitiugin, Mohamed Ahmed Sherif, Carlos Castillo, Axel-Cyrille Ngonga Ngomo

SEMANTiCS, 2023, #inproceedings

Tab2Onto: Unsupervised Semantification with Knowledge Graph Embeddings

By Hamada M. Zahera, Stefan Heindorf, Stefan Balke, Jonas Haupt, Martin Voigt, Carolin Walter, Fabian Witter, Axel-Cyrille Ngonga Ngomo

ESWC, 2022, #inproceedings

MultPAX: Keyphrase Extraction using Language Models and Knowledge Graphs

By Hamada M. Zahera, Daniel Vollmers, Mohamed Ahmed Sherif, Axel-Cyrille Ngonga Ngomo

ISWC, 2022, #inproceedings

OntoConnect: Domain-Agnostic Ontology Alignment using Graph Embedding with Negative Sampling

By Jaydeep Chakraborty, Mohamed Ahmed Sherif, Hamada M. Zahera, Srividya Bansal

Proceedings of the IEEE International Conference on Machine Learning and Applications, 2021, #inproceedings

I-AID: Identifying Actionable Information from Disaster-related Tweets

By Hamada M. Zahera, Rricha Jalota, Mohamed Ahmed Sherif, Axel-Cyrille Ngonga Ngomo

IEEE Open Access, 2021, #inproceedings

ASSET: A Semi-supervised Approach for Entity Typing in Knowledge Graphs

By Hamada M. Zahera, Stefan Heindorf, Axel-Cyrille Ngonga Ngomo

K-CAP 2021: Knowledge Capture Conference, 2021, #inproceedings

ProBERT: Product Data Classification with Fine-tuning BERT Model

By Hamada M. Zahera, Mohamed Ahmed Sherif

Proceedings of Mining the Web of HTML-embedded Product Data Workshop (MWPD2020), 2020, #inproceedings

Fine-tuned BERT Model for Multi-Label Tweets Classification

By Hamada M. Zahera, Ibrahim A. Elgendy, Rricha Jalota, Mohamed Ahmed Sherif

Proceedings of the Twenty-Eighth Text REtrieval Conference, TREC 2019, Gaithersburg, Maryland, USA, November 13-15, 2019, 2019, #inproceedings

Jointly Learning from Social Media and Environmental Data for Typhoon Intensity Prediction

By Hamada M. Zahera, Mohamed Ahmed Sherif, Axel-Cyrille Ngonga Ngomo

K-CAP 2019: Knowledge Capture Conference, 2019, #inproceedings

DICE @ TREC-IS 2018: Combining Knowledge Graphs and Deep Learning to Identify Crisis-Relevant Tweets

By Hamada M. Zahera, Rricha Jalota, Ricardo Usbeck

Proceedings of the Twenty-Seventh Text REtrieval Conference, TREC 2018, Gaithersburg, Maryland, USA, November 14-16, 2018, 2018, #inproceedings