About

• Since 2018 Researcher at ScaDS
• Master of Science (Computer Science), University of Leipzig, October 2018
• 2015 - 2018 Student Researcher at AKSW

Contact

• E-Mail: obraczka at informatik.uni-leipzig.de
• Tel.: +49 341 97 39516

Research Interests

• Knowledge Graphs
• (Knowledge Graph) Embeddings
• Data Integration
• Machine Learning (especially for everything mentioned above)

PC Member

• DI2KG 2020

Selected Talks

• ScaDS.AI SummerSchool 2022: Connecting The Right Dots: Entity Resolution on Knowledge Graphs
• DBpedia-Day colocated with SEMANTICS 2022: Fast Hubness-Reduced Nearest Neighbor Search for Entity Alignment in Knowledge Graphs

Publications

Hofer, M.; Obraczka, D.; Saeedi, A.; Köpcke, H.; Rahm, E. Construction of Knowledge Graphs: State and Challenges 2023-02

Obraczka, D.; Rahm, E. Fast Hubness-Reduced Nearest Neighbor Search for Entity Alignment in Knowledge Graphs Springer Nature Computer Science Journal 2022-10-01

Obraczka, Daniel;Saeedi, Alieh;Christen, Victor;Rahm, Erhard Big Data Integration for Industry 4.0 Digital Transformation 2022

Obraczka, Daniel; Rahm, Erhard An Evaluation of Hubness Reduction Methods for Entity Alignment with Knowledge Graph Embeddings Proceedings of the 13th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management (Best Student Paper Candidate) 2021-10

Obraczka, Daniel; Schuchart, Jonathan; Rahm, Erhard Embedding-Assisted Entity Resolution for Knowledge Graphs Proc. ESWC workshop on Knowledge Graph Construction (KGCW), 2021 2021-06

Ngonga Ngomo, Axel-Cyrille;Sherif, Mohamed Ahmed; Georgala, Kleanthi; Hassan, Mofeed;Dreßler, Kevin;Lyko, Klaus;Obraczka, Daniel;Soru, Tommaso LIMES: A Framework for Link Discovery on the Semantic Web KI - Künstliche Intelligenz, German Journal of Artificial Intelligence - Organ des Fachbereichs “Künstliche Intelligenz” der Gesellschaft für Informatik e.V. 2021-04-17

Obraczka, Daniel; Schuchart, Jonathan; Rahm, Erhard EAGER: Embedding-Assisted Entity Resolution for Knowledge Graphs Arxiv 2021-01

Frey, J.; Hofer, M.; Obraczka, D.; Lehmann, J.; Hellmann, S. DBpedia FlexiFusion The Best of Wikipedia>Wikidata>Your Data ISWC 2019 2019-10

Obraczka, D.; Saeedi, A.; Rahm, E. Knowledge Graph Completion with FAMER Proc. KDD workshop on Data Integration to Knowledge Graphs (DI2KG) (DI2KG Challenge Winner) 2019-08

Obraczka, Daniel; Ngonga Ngomo, Axel-Cyrille Dragon: Decision Tree Learning for Link Discovery Web Engineering 2019

Georgala, K.; Obraczka, D.; Ngonga Ngomo, A. Dynamic Planning for Link Discovery The Semantic Web, ESWC 2018, Lecture Notes in Computer Science 2018

Supervised Theses