Vollmers, Daniel, Rricha Jalota, Diego Moussallem, Hardik Topiwala, Axel-Cyrille Ngonga Ngomo, and Ricardo Usbeck. “Knowledge Graph Question Answering Using Graph-Pattern Isomorphism.” CoRR abs/2103.06752 (2021).

Sharma, Arnab, Caglar Demir, Axel-Cyrille Ngonga Ngomo, and Heike Wehrheim. “MLCheck- Property-Driven Testing of Machine Learning Models.” CoRR abs/2105.00741 (2021).

Wilke, Adrian, and Axel-Cyrille Ngonga Ngomo. “Open Data Portal Germany (OPAL) Projektergebnisse.” CoRR abs/2105.03161 (2021).

Demir, Caglar, and Axel-Cyrille Ngonga Ngomo. “Out-of-Vocabulary Entities in Link Prediction.” CoRR abs/2105.12524 (2021).

Demir, Caglar, and Axel-Cyrille Ngonga Ngomo. “DRILL- Deep Reinforcement Learning for Refinement Operators in ALC.” CoRR abs/2106.15373 (2021).

Sharma, Arnab, Caglar Demir, Axel-Cyrille Ngonga Ngomo, and Heike Wehrheim. “MLCHECK–Property-Driven Testing of Machine Learning Classifiers.” In Proceedings of the 20th IEEE International Conference on Machine Learning and Applications (ICMLA). IEEE, n.d.

M. Zahera, Hamada, Rricha Jalota, Mohamed Ahmed Sherif, and Axel-Cyrille Ngonga Ngomo. “I-AID: Identifying Actionable Information From Disaster-Related Tweets.”https://doi.org/10.1109/ACCESS.2021.3107812__IEEE Access 9 (2021): 118861–70.https://doi.org/10.1109/ACCESS.2021.3107812 .

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Feldhans, Robert, Adrian Wilke, Stefan Heindorf, Mohammad Hossein Shaker, Barbara Hammer, Axel-Cyrille Ngonga Ngomo, and Eyke Hüllermeier. “Drift Detection in Text Data with Document Embeddings.”https://doi.org/10.1007/978-3-030-91608-4_11__In Intelligent Data Engineering and Automated Learning – IDEAL 2021. Cham, 2021.https://doi.org/10.1007/978-3-030-91608-4_11 .

Wilke, Adrian, Arwa Bannoura, and Axel-Cyrille Ngonga Ngonga Ngomo. “Relicensing Combined Datasets.”https://doi.org/10.1109/ICSC50631.2021.00050__In 2021 IEEE 15th International Conference on Semantic Computing (ICSC), 241–47, 2021.https://doi.org/10.1109/ICSC50631.2021.00050 .

Firmansyah, Asep Fajar, Diego Moussallem, and Axel-Cyrille Ngonga Ngomo. “GATES: Using Graph Attention Networks for Entity Summarization.”https://doi.org/10.1145/3460210.3493574__In Proceedings of the 11th on Knowledge Capture Conference, 73–80. Virtual Event, USA: ACM, 2021.https://doi.org/10.1145/3460210.3493574 .

Feldhans, Robert, Adrian Wilke, Stefan Heindorf, Mohammad Hossein Shaker, Barbara Hammer, Axel-Cyrille Ngonga Ngomo, and Eyke Hüllermeier. “Drift Detection in Text Data with Document Embeddings.”https://doi.org/10.1007/978-3-030-91608-4_11__In Intelligent Data Engineering and Automated Learning – IDEAL 2021. Cham: Springer International Publishing, 2021.https://doi.org/10.1007/978-3-030-91608-4_11 .

Demir, Caglar, Diego Moussallem, Stefan Heindorf, and Axel-Cyrille Ngonga Ngomo. “Convolutional Hypercomplex Embeddings for Link Prediction.” In The 13th Asian Conference on Machine Learning, ACML 2021, 2021.

Nickchen, Tobias, Stefan Heindorf, and Gregor Engels. “Generating Physically Sound Training Data for Image Recognition of Additively Manufactured Parts.”https://doi.org/10.1109/wacv48630.2021.00204__In 2021 IEEE Winter Conference on Applications of Computer Vision (WACV). IEEE, 2021.https://doi.org/10.1109/wacv48630.2021.00204 .

Rohlfing, Katharina J., Philipp Cimiano, Ingrid Scharlau, Tobias Matzner, Heike M. Buhl, Hendrik Buschmeier, Elena Esposito, et al. “Explanation as a Social Practice: Toward a Conceptual Framework for the Social Design of AI Systems.”https://doi.org/10.1109/tcds.2020.3044366__IEEE Transactions on Cognitive and Developmental Systems 13, no. 3 (2021): 717–28.https://doi.org/10.1109/tcds.2020.3044366 .

Qudus, Umair, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo, and Young-Koo Lee. “An Empirical Evaluation of Cost-Based Federated SPARQL Query Processing Engines.”https://doi.org/10.3233/SW-200420__Semantic Web 12, no. 6 (n.d.): 843–68.https://doi.org/10.3233/SW-200420 .

Zahera, Hamada Mohamed Abdelsamee, Stefan Heindorf, and Axel-Cyrille Ngonga Ngomo. “ASSET: A Semi-Supervised Approach for Entity Typing in Knowledge Graphs.”https://doi.org/10.1145/3460210.3493563__In Proceedings of the 11th on Knowledge Capture Conference. ACM, 2021.https://doi.org/10.1145/3460210.3493563 .

Moussalem, Diego Campos. Knowledge Graphs for Multilingual Language Translation and Generation, 2020.https://doi.org/10.17619/UNIPB/1-980 .

Heindorf, Stefan, Yan Scholten, Henning Wachsmuth, Axel-Cyrille Ngonga Ngomo, and Martin Potthast. “CauseNet: Towards a Causality Graph Extracted from the Web.”https://doi.org/10.1145/3340531.3412763__In Proceedings of the 28th ACM International Conference on Information and Knowledge Management (CIKM 2020), 3023–30, 2020.https://doi.org/10.1145/3340531.3412763 .

Röder, Michael, Mohamed Sherif, Muhammad Saleem, Felix Conrads, and Axel-Cyrille Ngonga Ngomo. “Benchmarking the Lifecycle of Knowledge Graphs.”https://doi.org/10.3233/SSW200012__In Knowledge Graphs for EXplainable Artificial Intelligence: Foundations, Applications and Challenges, edited by Ilaria Tiddi, Freddy Lécué, and Pascal Hitzler, 73–97. IOS Press, 2020.https://doi.org/10.3233/SSW200012 .