Publications
IngridKG: A FAIR Knowledge Graph of Graffiti
M.A. Sherif, A.A.M. da Silva, S. Pestryakova, A.F. Ahmed, S. Niemann, A.-C.N. Ngomo, Scientific Data 10 (2023).
Neural Class Expression Synthesis
N.J. KOUAGOU, S. Heindorf, C. Demir, A.-C. Ngonga Ngomo, in: C. Pesquita, E. Jimenez-Ruiz, J. McCusker, D. Faria, M. Dragoni, A. Dimou, R. Troncy, S. Hertling (Eds.), The Semantic Web - 20th Extended Semantic Web Conference (ESWC 2023), Springer International Publishing, 2023, pp. 209–226.
Counterfactual Explanations for Concepts in ELH
L.N. Sieger, S. Heindorf, L. Blübaum, A.-C. Ngonga Ngomo, ArXiv:2301.05109 (2023).
Neuro-Symbolic Class Expression Learning
C. Demir, A.-C. Ngonga Ngomo, International Joint Conference on Artificial Intelligence (2023).
IndQNER: Named Entity Recognition Benchmark Dataset from the Indonesian Translation of the Quran
R.H. Gusmita, A.F. Firmansyah, D. Moussallem, A.-C. Ngonga Ngomo, in: Natural Language Processing and Information Systems, Springer Nature Switzerland, Cham, 2023.
Mit dem Leben Schritt halten - Eine Analyse des Wearable-Dispositivs
F.M. Schloots, Mit dem Leben Schritt halten - Eine Analyse des Wearable-Dispositivs, Springer Fachmedien Wiesbaden, Wiesbaden, 2023.
Neural Class Expression Synthesis in ALCHIQ(D)
N.J. Kouagou, S. Heindorf, C. Demir, A.-C. Ngonga Ngomo, in: Machine Learning and Knowledge Discovery in Databases: Research Track, Springer Nature Switzerland, Cham, 2023.
Class Expression Learning with Multiple Representations
A.-C. Ngonga Ngomo, C. Demir, N.J. Kouagou, S. Heindorf, N. Karalis, A. Bigerl, in: Compendium of Neurosymbolic Artificial Intelligence, IOS Press, 2023, pp. 272–286.
LitCQD: Multi-Hop Reasoning in Incomplete Knowledge Graphs with Numeric Literals
C. Demir, M. Wiebesiek, R. Lu, A.-C. Ngonga Ngomo, S. Heindorf, ECML PKDD (2023).
EvoLearner: Learning Description Logics with Evolutionary Algorithms
S. Heindorf, L. Blübaum, N. Düsterhus, T. Werner, V.N. Golani, C. Demir, A.-C. Ngonga Ngomo, in: WWW, ACM, 2022, pp. 818–828.
MultPAX: Keyphrase Extraction Using Language Models and Knowledge Graphs
H.M. Zahera, D. Vollmers, M.A. Sherif, A.-C. Ngonga Ngomo, in: U. Sattler, A. Hogan, C.M. Keet, V. Presutti, J.P.A. Almeida, H. Takeda, P. Monnin, G. Pirrò, C. d’Amato (Eds.), The Semantic Web - ISWC 2022 - 21st International Semantic Web Conference, Virtual Event, October 23-27, 2022, Proceedings, Springer, 2022, pp. 303–318.
Can Machine Translation be a Reasonable Alternative for Multilingual Question Answering Systems over Knowledge Graphs?
A. Perevalov, A. Both, D. Diefenbach, A.-C. Ngonga Ngomo, in: F. Laforest, R. Troncy, E. Simperl, D. Agarwal, A. Gionis, I. Herman, L. Médini (Eds.), WWW ’22: The ACM Web Conference 2022, Virtual Event, Lyon, France, April 25 - 29, 2022, ACM, 2022, pp. 977–986.
Proceedings of the QuWeDa 2022: 6th Workshop on Storing, Querying and Benchmarking Knowledge Graphs co-located with 21st International Semantic Web Conference (ISWC 2022), Hangzhou, China, 23-27 October 2022
M. Saleem, A.-C. Ngonga Ngomo, DE, eds., Proceedings of the QuWeDa 2022: 6th Workshop on Storing, Querying and Benchmarking Knowledge Graphs Co-Located with 21st International Semantic Web Conference (ISWC 2022), Hangzhou, China, 23-27 October 2022, CEUR-WS.org, 2022.
Hashing the Hypertrie: Space- and Time-Efficient Indexing for SPARQL in Tensors
A. Bigerl, L. Conrads, C. Behning, M. Saleem, A.-C. Ngonga Ngomo, in: U. Sattler, A. Hogan, C.M. Keet, V. Presutti, J.P.A. Almeida, H. Takeda, P. Monnin, G. Pirrò, C. d’Amato (Eds.), The Semantic Web - ISWC 2022 - 21st International Semantic Web Conference, Virtual Event, October 23-27, 2022, Proceedings, Springer, 2022, pp. 57–73.
REBench: Microbenchmarking Framework for Relation Extraction Systems
M. Ali, M. Saleem, A.-C. Ngonga Ngomo, in: U. Sattler, A. Hogan, C.M. Keet, V. Presutti, J.P.A. Almeida, H. Takeda, P. Monnin, G. Pirrò, C. d’Amato (Eds.), The Semantic Web - ISWC 2022 - 21st International Semantic Web Conference, Virtual Event, October 23-27, 2022, Proceedings, Springer, 2022, pp. 643–659.
Rapid Explainability for Skill Description Learning
C. Demir, A. Himmelhuber, Y. Liu, A. Bigerl, D. Moussallem, A.-C. Ngonga Ngomo, in: A. Dimou, A. Haller, A.L. Gentile, P. Ristoski (Eds.), Proceedings of the ISWC 2022 Posters, Demos and Industry Tracks: From Novel Ideas to Industrial Practice Co-Located with 21st International Semantic Web Conference {(ISWC} 2022), Virtual Conference, Hangzhou, China, October 23-27, 2022, CEUR-WS.org, 2022.
LSQ Framework: The LSQ Framework for SPARQL Query Log Processing
C. Stadler, M. Saleem, A.-C. Ngonga Ngomo, in: M. Saleem, A.-C.N. Ngomo (Eds.), Proceedings of the QuWeDa 2022: 6th Workshop on Storing, Querying and Benchmarking Knowledge Graphs Co-Located with 21st International Semantic Web Conference {(ISWC} 2022), Hangzhou, China, 23-27 October 2022, CEUR-WS.org, 2022, pp. 49–64.
Kronecker Decomposition for Knowledge Graph Embeddings
C. Demir, J. Lienen, A.-C. Ngonga Ngomo, in: A. Bellogín, L. Boratto, F. Cena (Eds.), HT ’22: 33rd ACM Conference on Hypertext and Social Media, Barcelona, Spain, 28 June 2022- 1 July 2022, ACM, 2022, pp. 1–10.
Enhancing the Accessibility of Knowledge Graph Question Answering Systems through Multilingualization
A. Perevalov, A.-C. Ngonga Ngomo, A. Both, in: 16th IEEE International Conference on Semantic Computing, ICSC 2022, Laguna Hills, CA, USA, January 26-28, 2022, IEEE, 2022, pp. 251–256.
Tab2Onto: Unsupervised Semantification with Knowledge Graph Embeddings
H.M. Zahera, S. Heindorf, S. Balke, J. Haupt, M. Voigt, C. Walter, F. Witter, A.-C. Ngonga Ngomo, in: P. Groth, A. Rula, J. Schneider, I. Tiddi, E. Simperl, P. Alexopoulos, R. Hoekstra, M. Alam, A. Dimou, M. Tamper (Eds.), The Semantic Web: ESWC 2022 Satellite Events - Hersonissos, Crete, Greece, May 29 - June 2, 2022, Proceedings, Springer, 2022, pp. 47–51.
CausalQA: A Benchmark for Causal Question Answering
A. Bondarenko, M. Wolska, S. Heindorf, L. Blübaum, A.-C. Ngonga Ngomo, B. Stein, P. Braslavski, M. Hagen, M. Potthast, in: N. Calzolari, C.-R. Huang, H. Kim, J. Pustejovsky, L. Wanner, K.-S. Choi, P.-M. Ryu, H.-H. Chen, L. Donatelli, H. Ji, S. Kurohashi, P. Paggio, N. Xue, S. Kim, Y. Hahm, Z. He, T.K. Lee, E. Santus, F. Bond, S.-H. Na (Eds.), Proceedings of the 29th International Conference on Computational Linguistics, COLING 2022, Gyeongju, Republic of Korea, October 12-17, 2022, International Committee on Computational Linguistics, 2022, pp. 3296–3308.
Knowledge Graphs
A. Hogan, E. Blomqvist, M. Cochez, C. d’Amato, G. de Melo, C. Gutierrez, S. Kirrane, J.E.L. Gayo, R. Navigli, S. Neumaier, A.-C. Ngonga Ngomo, A. Polleres, S.M. Rashid, A. Rula, L. Schmelzeisen, J.F. Sequeda, S. Staab, A. Zimmermann, ACM Comput. Surv. 54 (2022) 71:1–71:37.
A survey of RDF stores & SPARQL engines for querying knowledge graphs
W. Ali, M. Saleem, B. Yao, A. Hogan, A.-C. Ngonga Ngomo, VLDB J. 31 (2022) 1–26.
Hardware-agnostic computation for large-scale knowledge graph embeddings
C. Demir, A.-C. Ngonga Ngomo, Softw. Impacts 13 (2022) 100377.
User Involvement in Training Smart Home Agents
L.N. Sieger, J. Hermann, A. Schomäcker, S. Heindorf, C. Meske, C.-C. Hey, A. Doğangün, in: International Conference on Human-Agent Interaction, ACM, 2022.
Tab2Onto: Unsupervised Semantification with Knowledge Graph Embeddings
H.M.A. Zahera, S. Heindorf, S. Balke, J. Haupt, M. Voigt, C. Walter, F. Witter, A.-C. Ngonga Ngomo, in: The Semantic Web: ESWC 2022 Satellite Events, Springer International Publishing, Cham, 2022.
CausalQA: A Benchmark for Causal Question Answering
A. Bondarenko, M. Wolska, S. Heindorf, L. Blübaum, A.-C. Ngonga Ngomo, B. Stein, P. Braslavski, M. Hagen, M. Potthast, in: Proceedings of the 29th International Conference on Computational Linguistics, International Committee on Computational Linguistics, Gyeongju, Republic of Korea, 2022, pp. 3296–3308.
CovidPubGraph: A FAIR Knowledge Graph of COVID-19 Publications
S. Pestryakova, D. Vollmers, M. Sherif, S. Heindorf, M. Saleem, D. Moussallem, A.-C. Ngonga Ngomo, Scientific Data (2022).
AI-Based Assistance System for Manufacturing
S. Deppe, L. Brandt, M. Brünninghaus, J. Papenkordt, S. Heindorf, G. Tschirner-Vinke, (2022).
Learning Concept Lengths Accelerates Concept Learning in ALC
N.J. KOUAGOU, S. Heindorf, C. Demir, A.-C. Ngonga Ngomo, in: The Semantic Web, Springer International Publishing, Cham, 2022.
Multilingual Verbalization and Summarization for Explainable Link Discovery
A. Fathi Ahmed, M. Ahmed Sherif, D. Moussallem, A.-C. Ngonga Ngomo, Data Knowl. Eng. 133 (2021) 101874.
Applying Grammar-Based Compression to RDF
M. Röder, P. Frerk, F. Conrads, A.-C. Ngonga Ngomo, in: R. Verborgh, K. Hose, H. Paulheim, P.-A. Champin, M. Maleshkova, O. Corcho, P. Ristoski, M. Alam (Eds.), The Semantic Web - 18th International Conference, {ESWC} 2021, Virtual Event, June 6-10, 2021, Proceedings, Springer, 2021, pp. 93–108.
Unsupervised Relation Extraction Using Sentence Encoding
M. Ali, M. Saleem, A.-C. Ngonga Ngomo, in: R. Verborgh, A. Dimou, A. Hogan, C. d’Amato, I. Tiddi, A. Br{\"{o}}ring, S. Maier, F. Ongenae, R. Tommasini, M. Alam (Eds.), The Semantic Web: {ESWC} 2021 Satellite Events - Virtual Event, June 6-10, 2021, Revised Selected Papers, Springer, 2021, pp. 136–140.
Unsupervised Relation Extraction Using Sentence Encoding
M. Ali, M. Saleem, A.-C. Ngonga Ngomo, in: R. Verborgh, A. Dimou, A. Hogan, C. d’Amato, I. Tiddi, A. Br{\"{o}}ring, S. Maier, F. Ongenae, R. Tommasini, M. Alam (Eds.), The Semantic Web: {ESWC} 2021 Satellite Events - Virtual Event, June 6-10, 2021, Revised Selected Papers, Springer, 2021, pp. 136–140.
InferNER: an attentive model leveraging the sentence-level information for Named Entity Recognition in Microblogs
M. Shahzad, A. Amin, D. Esteves, A.-C. Ngonga Ngomo, in: E. Bell, F. Keshtkar (Eds.), Proceedings of the Thirty-Fourth International Florida Artificial Intelligence Research Society Conference, North Miami Beach, Florida, USA, May 17-19, 2021, 2021.
Lemming - Example-based Mimicking of Knowledge Graphs
M. Röder, P. Thuy Sy Nguyen, F. Conrads, A. Alexandra Morim da Silva, A.-C. Ngonga Ngomo, in: 15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021, {IEEE}, 2021, pp. 62–69.
SYNTHG: Mimicking RDF Graphs Using Tensor Factorization
A. Amer Desouki, F. Conrads, M. Röder, A.-C. Ngonga Ngomo, in: 15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021, {IEEE}, 2021, pp. 76–79.
A shallow neural model for relation prediction
C. Demir, D. Moussallem, A.-C. Ngonga Ngomo, in: 15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021, {IEEE}, 2021, pp. 179–182.
Template-based Question Answering using Recursive Neural Networks
R. G. Athreya, S. Kona Bansal, A.-C. Ngonga Ngomo, R. Usbeck, in: 15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021, {IEEE}, 2021, pp. 195–198.
LAUREN - Knowledge Graph Summarization for Question Answering
R. Jalota, D. Vollmers, D. Moussallem, A.-C. Ngonga Ngomo, in: 15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021, {IEEE}, 2021, pp. 221–226.
Relicensing Combined Datasets
A. Wilke, A. Bannoura, A.-C. Ngonga Ngomo, in: 15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021, {IEEE}, 2021, pp. 241–247.
ORCA - a Benchmark for Data Web Crawlers
M. Röder, G. de Souza, D. Kuchelev, A. Amer Desouki, A.-C. Ngonga Ngomo, in: 15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021, {IEEE}, 2021, pp. 272–279.
Using Compositional Embeddings for Fact Checking
A. Alexandra Morim da Silva, M. Röder, A.-C. Ngonga Ngomo, in: A. Hotho, E. Blomqvist, S. Dietze, A. Fokoue, Y. Ding, P. M. Barnaghi, A. Haller, M. Dragoni, H. Alani (Eds.), The Semantic Web - {ISWC} 2021 - 20th International Semantic Web Conference, {ISWC} 2021, Virtual Event, October 24-28, 2021, Proceedings, Springer, 2021, pp. 270–286.
Convolutional Complex Knowledge Graph Embeddings
C. Demir, A.-C. Ngonga Ngomo, in: R. Verborgh, K. Hose, H. Paulheim, P.-}Antoine Champin, M. Maleshkova, O. Corcho, P. Ristoski, M. Alam (Eds.), The Semantic Web - 18th International Conference, {ESWC} 2021, Virtual Event, June 6-10, 2021, Proceedings, Springer, 2021, pp. 409–424.
Twitter Network Mimicking for Data Storage Benchmarking
R. Speck, D. Moussallem, A.-C. Ngonga Ngomo, in: 15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021, {IEEE}, 2021, pp. 298–305.
A shallow neural model for relation prediction
C. Demir, D. Moussallem, A.-C. Ngonga Ngomo, CoRR abs/2101.09090 (2021).
A Survey of RDF Stores \& SPARQL Engines for Querying Knowledge Graphs
W. Ali, M. Saleem, B. Yao, A. Hogan, A.-C. Ngonga Ngomo, CoRR abs/2102.13027 (2021).
Knowledge Graph Question Answering using Graph-Pattern Isomorphism
D. Vollmers, R. Jalota, D. Moussallem, H. Topiwala, A.-C. Ngonga Ngomo, R. Usbeck, CoRR abs/2103.06752 (2021).
MLCheck- Property-Driven Testing of Machine Learning Models
A. Sharma, C. Demir, A.-C. Ngonga Ngomo, H. Wehrheim, CoRR abs/2105.00741 (2021).
Open Data Portal Germany (OPAL) Projektergebnisse
A. Wilke, A.-C. Ngonga Ngomo, CoRR abs/2105.03161 (2021).
Out-of-Vocabulary Entities in Link Prediction
C. Demir, A.-C. Ngonga Ngomo, CoRR abs/2105.12524 (2021).
DRILL- Deep Reinforcement Learning for Refinement Operators in ALC
C. Demir, A.-C. Ngonga Ngomo, CoRR abs/2106.15373 (2021).
MLCHECK–Property-Driven Testing of Machine Learning Classifiers
A. Sharma, C. Demir, A.-C. Ngonga Ngomo, H. Wehrheim, in: Proceedings of the 20th IEEE International Conference on Machine Learning and Applications (ICMLA), IEEE, n.d.
I-AID: Identifying Actionable Information From Disaster-Related Tweets
H. M. Zahera, R. Jalota, M. Ahmed Sherif, A.-C. Ngonga Ngomo, {IEEE} Access 9 (2021) 118861–118870.
Knowledge Graphs
A. Hogan, E. Blomqvist, M. Cochez, C. d’Amato, G. de Melo, C. Guti{\’{e}}rrez, S. Kirrane, J. Emilio Labra Gayo, R. Navigli, S. Neumaier, A.-C. Ngonga Ngomo, A. Polleres, S. M. Rashid, A. Rula, L. Schmelzeisen, J. F. Sequeda, S. Staab, A. Zimmermann, {ACM} Comput. Surv. 54 (2021) 71:1-71:37.
Drift Detection in Text Data with Document Embeddings
R. Feldhans, A. Wilke, S. Heindorf, M.H. Shaker, B. Hammer, A.-C. Ngonga Ngomo, E. Hüllermeier, in: Intelligent Data Engineering and Automated Learning – IDEAL 2021, Cham, 2021.
Relicensing Combined Datasets
A. Wilke, A. Bannoura, A.-C.N. Ngonga Ngomo, in: 2021 IEEE 15th International Conference on Semantic Computing (ICSC), 2021, pp. 241–247.
GATES: Using Graph Attention Networks for Entity Summarization
A.F. Firmansyah, D. Moussallem, A.-C. Ngonga Ngomo, in: Proceedings of the 11th on Knowledge Capture Conference, ACM, Virtual Event, USA, 2021, pp. 73–80.
ASSET: A Semi-supervised Approach for Entity Typing in Knowledge Graphs
H.M.A. Zahera, S. Heindorf, A.-C. Ngonga Ngomo, in: Proceedings of the 11th on Knowledge Capture Conference, ACM, 2021.
Drift Detection in Text Data with Document Embeddings
R. Feldhans, A. Wilke, S. Heindorf, M.H. Shaker, B. Hammer, A.-C. Ngonga Ngomo, E. Hüllermeier, in: Intelligent Data Engineering and Automated Learning – IDEAL 2021, Springer International Publishing, Cham, 2021.
Convolutional Hypercomplex Embeddings for Link Prediction
C. Demir, D. Moussallem, S. Heindorf, A.-C. Ngonga Ngomo, in: The 13th Asian Conference on Machine Learning, ACML 2021, 2021.
Generating Physically Sound Training Data for Image Recognition of Additively Manufactured Parts
T. Nickchen, S. Heindorf, G. Engels, in: 2021 IEEE Winter Conference on Applications of Computer Vision (WACV), IEEE, 2021.
Explanation as a Social Practice: Toward a Conceptual Framework for the Social Design of AI Systems
K.J. Rohlfing, P. Cimiano, I. Scharlau, T. Matzner, H.M. Buhl, H. Buschmeier, E. Esposito, A. Grimminger, B. Hammer, R. Haeb-Umbach, I. Horwath, E. Hüllermeier, F. Kern, S. Kopp, K. Thommes, A.-C. Ngonga Ngomo, C. Schulte, H. Wachsmuth, P. Wagner, B. Wrede, IEEE Transactions on Cognitive and Developmental Systems 13 (2021) 717–728.
An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines
U. Qudus, M. Saleem, A.-C. Ngonga Ngomo, Y.-K. Lee, Semantic Web 12 (n.d.) 843–868.
Knowledge Graphs for Multilingual Language Translation and Generation
D.C. Moussalem, Knowledge Graphs for Multilingual Language Translation and Generation, 2020.
CauseNet: Towards a Causality Graph Extracted from the Web
S. Heindorf, Y. Scholten, H. Wachsmuth, A.-C. Ngonga Ngomo, M. Potthast, in: Proceedings of the 28th ACM International Conference on Information and Knowledge Management (CIKM 2020), 2020, pp. 3023–3030.
Benchmarking the Lifecycle of Knowledge Graphs
M. Röder, M. Sherif, M. Saleem, F. Conrads, A.-C. Ngonga Ngomo, in: I. Tiddi, F. Lécué, P. Hitzler (Eds.), Knowledge Graphs for EXplainable Artificial Intelligence: Foundations, Applications and Challenges, IOS Press, 2020, pp. 73–97.
Ranking on Very Large Knowledge Graphs
Show all publications
A.A. Desouki, M. Röder, A.-C. Ngonga Ngomo, in: Proceedings of the 30th ACM Conference on Hypertext and Social Media - HT ’19, ACM, 2019, pp. 163–171.