Prof. Dr. Jens Lehmann

Offices

Room 1.022
Endenicher Allee 19a, 53115 Bonn, Germany
University of Bonn, Computer Science
Tel:+49 228 73-4315

Room C1-227
Schloss Birlinghoven, 53757 Sankt Augustin, Germany
Fraunhofer IAIS

Room P631
Augustusplatz 10, 04109 Leipzig, Germany
Institute for Applied Informatics (InfAI) at the University of Leipzig

Short CV


Prof. Dr. Jens Lehmann (http://www.jens-lehmann.org) is a Full Professor at the University of Bonn and a researcher at the University of Leipzig where he is co-leading the AKSW group with 40 researchers. He obtained a PhD with grade summa cum laude at the University of Leipzig in 2010 and a master degree in Computer Science from Technical University of Dresden in 2006. His research interests involve Semantic Web, machine learning and knowledge representation. He is founder, leader or contributor of several open source projects, including DL-Learner, DBpedia, LinkedGeoData and ORE. He works/worked in several funded projects, e.g. GeoKnow (EU STREP, coordinator), LOD2 (EU IP, work package lead), LATC (EU STREP, lead for University of Leipzig) and SoftWiki (BmBF). Prof. Dr. Jens Lehmann authored more than 70 articles in international journals and conferences cited more than 9000 times according to Google Scholar.

Research Interests


  • Machine Learning
  • Semantic Web
  • Big Data
  • Logics

Publications

260 entries « 1 of 6 »

2021

Oliveira, Italo Lopes; Fileto, Renato; Speck, René; 'i, Lu; Moussallem, Diego; Lehmann, Jens

Towards holistic Entity Linking: Survey and directions Journal Article

Inf. Syst., 95 , pp. 101624, 2021.

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2020

Jabeen, Hajira; Haziiev, Eskender; Sejdiu, Gezim; Lehmann, Jens

DISE: A Distributed in-Memory SPARQL Processing Engine over Tensor Data Inproceedings

IEEE 14th International Conference on Semantic Computing, ICSC 2020, San Diego, CA, USA, February 3-5, 2020, pp. 400–407, IEEE, 2020.

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Thakkar, Harsh; Angles, Renzo; Rodriguez, Marko; Mallette, Stephen; Lehmann, Jens

Let's build Bridges, not Walls: SPARQL Querying of TinkerPop Graph Databases with Sparql-Gremlin Inproceedings

IEEE 14th International Conference on Semantic Computing, ICSC 2020, San Diego, CA, USA, February 3-5, 2020, pp. 408–415, IEEE, 2020.

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Musyaffa, Fathoni A; Vidal, Maria-Esther; Orlandi, Fabrizio; Lehmann, Jens; Jabeen, Hajira

IOTA: Interlinking of heterogeneous multilingual open fiscal DaTA Journal Article

Expert Syst. Appl., 147 , pp. 113135, 2020.

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Kacupaj, Endri; Zafar, Hamid; Lehmann, Jens; Maleshkova, Maria

VQuAnDa: Verbalization QUestion ANswering DAtaset Inproceedings

The Semantic Web - 17th International Conference, ESWC 2020, Heraklion, Crete, Greece, May 31-June 4, 2020, Proceedings, pp. 531–547, Springer, 2020.

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Nayyeri, Mojtaba; Vahdati, Sahar; Zhou, Xiaotian; Yazdi, Hamed Shariat; Lehmann, Jens

Embedding-Based Recommendations on Scholarly Knowledge Graphs Inproceedings

The Semantic Web - 17th International Conference, ESWC 2020, Heraklion, Crete, Greece, May 31-June 4, 2020, Proceedings, pp. 255–270, Springer, 2020.

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Nedelchev, Rostislav; Usbeck, Ricardo; Lehmann, Jens

Treating Dialogue Quality Evaluation as an Anomaly Detection Problem Inproceedings

Proceedings of The 12th Language Resources and Evaluation Conference, LREC 2020, Marseille, France, May 11-16, 2020, pp. 508–512, European Language Resources Association, 2020.

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Ali, Mehdi; Berrendorf, Max; Hoyt, Charles Tapley; Vermue, Laurent; Galkin, Mikhail; Sharifzadeh, Sahand; Fischer, Asja; Tresp, Volker; Lehmann, Jens

Bringing Light Into the Dark: A Large-scale Evaluation of Knowledge Graph Embedding Models Under a Unified Framework Miscellaneous

2020.

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Jabeen, Hajira; Weinz, Jonas; Lehmann, Jens

AutoChef: Automated Generation of Cooking Recipes Inproceedings

IEEE Congress on Evolutionary Computation, CEC 2020, Glasgow, United Kingdom, July 19-24, 2020, pp. 1–7, IEEE, 2020.

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Say, Zeynep; Fathalla, Said; Vahdati, Sahar; Lehmann, Jens; Auer, Sören

Ontology Design for Pharmaceutical Research Outcomes Inproceedings

Digital Libraries for Open Knowledge - 24th International Conference on Theory and Practice of Digital Libraries, TPDL 2020, Lyon, France, August 25-27, 2020, Proceedings, pp. 119–132, Springer, 2020.

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Sadeghi, Afshin; Graux, Damien; Yazdi, Hamed Shariat; Lehmann, Jens

MDE: Multiple Distance Embeddings for Link Prediction in Knowledge Graphs Inproceedings

ECAI 2020 - 24th European Conference on Artificial Intelligence, 29 August-8 September 2020, Santiago de Compostela, Spain, August 29 - September 8, 2020 - Including 10th Conference on Prestigious Applications of Artificial Intelligence (PAIS 2020), pp. 1427–1434, IOS Press, 2020.

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Zafar, Hamid; Tavakol, Maryam; Lehmann, Jens

Distantly Supervised Question Parsing Inproceedings

ECAI 2020 - 24th European Conference on Artificial Intelligence, 29 August-8 September 2020, Santiago de Compostela, Spain, August 29 - September 8, 2020 - Including 10th Conference on Prestigious Applications of Artificial Intelligence (PAIS 2020), pp. 2290–2297, IOS Press, 2020.

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Chau, Minh Triet; Esteves, Diego; Lehmann, Jens

A Neural-based model to Predict the Future Natural Gas Market Price through Open-domain Event Extraction Inproceedings

Proceedings of the 1st International Workshop on Cross-lingual Event-centric Open Analytics co-located with the 17th Extended Semantic Web Conference (ESWC 2020), Heraklion, Crete, Greece, June 3, 2020 (online event due to COVID-19 outbreak), pp. 17–31, CEUR-WS.org, 2020.

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Graux, Damien; Sejdiu, Gezim; Stadler, Claus; Napolitano, Giulio; Lehmann, Jens

MINDS: A Translator to Embed Mathematical Expressions Inside SPARQL Queries Inproceedings

Semantic Systems. In the Era of Knowledge Graphs - 16th International Conference on Semantic Systems, SEMANTiCS 2020, Amsterdam, The Netherlands, September 7-10, 2020, Proceedings, pp. 104–117, Springer, 2020.

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Musyaffa, Fathoni A; Lehmann, Jens; Jabeen, Hajira

Cross-administration comparative analysis of open fiscal data Inproceedings

ICEGOV 2020: 13th International Conference on Theory and Practice of Electronic Governance, Athens, Greece, 23-25 September, 2020, pp. 459–468, ACM, 2020.

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Payrosangari, Samin; Sadeghi, Afshin; Graux, Damien; Lehmann, Jens

Meta-hyperband: Hyperparameter Optimization with Meta-learning and Coarse-to-Fine Inproceedings

Intelligent Data Engineering and Automated Learning - IDEAL 2020 - 21st International Conference, Guimaraes, Portugal, November 4-6, 2020, Proceedings, Part II, pp. 335–347, Springer, 2020.

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Nayyeri, Mojtaba; Zhou, Xiaotian; Vahdati, Sahar; Izanloo, Reza; Yazdi, Hamed Shariat; Lehmann, Jens

Let the Margin SlidE for Knowledge Graph Embeddings via a Correntropy Objective Function Inproceedings

2020 International Joint Conference on Neural Networks, IJCNN 2020, Glasgow, United Kingdom, July 19-24, 2020, pp. 1–9, IEEE, 2020.

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Nayyeri, Mojtaba; Xu, Chengjin; Vahdati, Sahar; Vassilyeva, Nadezhda; Sallinger, Emanuel; Yazdi, Hamed Shariat; Lehmann, Jens

Fantastic Knowledge Graph Embeddings and How to Find the Right Space for Them Inproceedings

The Semantic Web - ISWC 2020 - 19th International Semantic Web Conference, Athens, Greece, November 2-6, 2020, Proceedings, Part I, pp. 438–455, Springer, 2020.

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Rose, Jewgeni; Lehmann, Jens

CASQAD - A New Dataset for Context-Aware Spatial Question Answering Inproceedings

The Semantic Web - ISWC 2020 - 19th International Semantic Web Conference, Athens, Greece, November 2-6, 2020, Proceedings, Part II, pp. 3–17, Springer, 2020.

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Xu, Chenjin; Nayyeri, Mojtaba; Alkhoury, Fouad; Yazdi, Hamed Shariat; Lehmann, Jens

Temporal Knowledge Graph Completion Based on Time Series Gaussian Embedding Inproceedings

The Semantic Web - ISWC 2020 - 19th International Semantic Web Conference, Athens, Greece, November 2-6, 2020, Proceedings, Part I, pp. 654–671, Springer, 2020.

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Mohamed, Heba; Fathalla, Said; Lehmann, Jens; Jabeen, Hajira

A Distributed Approach for Parsing Large-scale OWL Datasets Inproceedings

Proceedings of the 12th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management, IC3K 2020, Volume 2: KEOD, Budapest, Hungary, November 2-4, 2020, pp. 227–234, SCITEPRESS, 2020.

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Say, Aysegul; Fathalla, Said; Vahdati, Sahar; Lehmann, Jens; Auer, Sören

Semantic Representation of Physics Research Data Inproceedings

Proceedings of the 12th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management, IC3K 2020, Volume 2: KEOD, Budapest, Hungary, November 2-4, 2020, pp. 64–75, SCITEPRESS, 2020.

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Nayyeri, Mojtaba; Alam, Mirza Mohtashim; Lehmann, Jens; Vahdati, Sahar

3D Learning and Reasoning in Link Prediction Over Knowledge Graphs Journal Article

IEEE Access, 8 , pp. 196459–196471, 2020.

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Nedelchev, Rostislav; Lehmann, Jens; Usbeck, Ricardo

Language Model Transformers as Evaluators for Open-domain Dialogues Inproceedings

Proceedings of the 28th International Conference on Computational Linguistics, COLING 2020, Barcelona, Spain (Online), December 8-13, 2020, pp. 6797–6808, International Committee on Computational Linguistics, 2020.

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Galkin, Mikhail; Trivedi, Priyansh; Maheshwari, Gaurav; Usbeck, Ricardo; Lehmann, Jens

Message Passing for Hyper-Relational Knowledge Graphs Inproceedings

Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing, EMNLP 2020, Online, November 16-20, 2020, pp. 7346–7359, Association for Computational Linguistics, 2020.

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2019

Kassawat, Firas; Chaudhuri, Debanjan; Lehmann, Jens

Incorporating Joint Embeddings into Goal-Oriented Dialogues with Multi-task Learning Inproceedings

The Semantic Web, pp. 225–239, Springer International Publishing, Cham, 2019, ISBN: 978-3-030-21348-0.

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Dadwal, Rajjat; Graux, Damien; Sejdiu, Gezim; Jabeen, Hajira; Lehmann, Jens

Clustering Pipelines of large RDF POI Data Inproceedings

Proceedings of 16th Extended Semantic Web Conference (ESWC 2019), Poster & Demos, 2019.

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Sejdiu, Gezim; Rula, Anisa; Lehmann, Jens; Jabeen, Hajira

A Scalable Framework for Quality Assessment of RDF Datasets Inproceedings

Proceedings of 18th International Semantic Web Conference, 2019.

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Sejdiu, Gezim; Graux, Damien; Khan, Imran; Lytra, Ioanna; Jabeen, Hajira; Lehmann, Jens

Towards a Scalable Semantic-Based Distributed Approach for SPARQL Query Evaluation Inproceedings

Semantic Systems. The Power of AI and Knowledge Graphs - 15th International Conference, SEMANTiCS 2019, Karlsruhe, Germany, September 9-12, 2019, Proceedings, pp. 295–309, Springer, 2019.

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Abdelkawi, Abdelrahman; Zafar, Hamid; Maleshkova, Maria; Lehmann, Jens

Complex Query Augmentation for Question Answering over Knowledge Graphs Inproceedings

On the Move to Meaningful Internet Systems: OTM 2019 Conferences - Confederated International Conferences: CoopIS, ODBASE, C&TC 2019, Rhodes, Greece, October 21-25, 2019, Proceedings, pp. 571–587, Springer, 2019.

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Stadler, Claus; Sejdiu, Gezim; Graux, Damien; Lehmann, Jens

Querying Large-scale RDF Datasets Using the SANSA Framework Inproceedings

Proceedings of the ISWC 2019 Satellite Tracks (Posters & Demonstrations, Industry, and Outrageous Ideas) co-located with 18th International Semantic Web Conference (ISWC 2019), Auckland, New Zealand, October 26-30, 2019, pp. 285–288, CEUR-WS.org, 2019.

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Stadler, Claus; Sejdiu, Gezim; Graux, Damien; Lehmann, Jens

Sparklify: A Scalable Software Component for Efficient Evaluation of SPARQL Queries over Distributed RDF Datasets Inproceedings

The Semantic Web - ISWC 2019 - 18th International Semantic Web Conference, Auckland, New Zealand, October 26-30, 2019, Proceedings, Part II, pp. 293–308, Springer, 2019.

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'i, Lu; Lehmann, Jens; de Carvalho, André C P L F; Lorena, Ana Carolina

New label noise injection methods for the evaluation of noise filters Journal Article

Knowl. Based Syst., 163 , pp. 693–704, 2019.

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Athanasiou, Spiros; Giannopoulos, Giorgos; Graux, Damien; Karagiannakis, Nikos; Lehmann, Jens; Ngomo, Axel-Cyrille Ngonga; Patroumpas, Kostas; Sherif, Mohamed Ahmed; Skoutas, Dimitrios

Big POI data integration with Linked Data technologies Inproceedings

Advances in Database Technology - 22nd International Conference on Extending Database Technology, EDBT 2019, Lisbon, Portugal, March 26-29, 2019, pp. 477–488, OpenProceedings.org, 2019.

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Rahimbayli, Sattar; Lehmann, Jens; Deserno, Thomas M

Pay for Performance in Electronic Data Capture for Clinical Trials and Medical Registries Inproceedings

ICT for Health Science Research - Proceedings of the EFMI 2019 Special Topic Conference - 7-10 April 2019, Hanover, Germany, pp. 221–225, IOS Press, 2019.

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Chawla, Piyush; Esteves, Diego; Pujar, Karthik; Lehmann, Jens

SimpleLSTM: A Deep-Learning Approach to Simple-Claims Classification Inproceedings

Progress in Artificial Intelligence, 19th EPIA Conference on Artificial Intelligence, EPIA 2019, Vila Real, Portugal, September 3-6, 2019, Proceedings, Part II, pp. 244–255, Springer, 2019.

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Dadwal, Rajjat; Graux, Damien; Sejdiu, Gezim; Jabeen, Hajira; Lehmann, Jens

Clustering Pipelines of Large RDF POI Data Inproceedings

The Semantic Web: ESWC 2019 Satellite Events - ESWC 2019 Satellite Events, Portorov z, Slovenia, June 2-6, 2019, Revised Selected Papers, pp. 24–27, Springer, 2019.

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Ibrahim, Shimaa; Fathalla, Said; Yazdi, Hamed Shariat; Lehmann, Jens; Jabeen, Hajira

OECM: A Cross-Lingual Approach for Ontology Enrichment Inproceedings

The Semantic Web: ESWC 2019 Satellite Events - ESWC 2019 Satellite Events, Portorov z, Slovenia, June 2-6, 2019, Revised Selected Papers, pp. 100–104, Springer, 2019.

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Jabeen, Hajira; Tahara, Nargis; Lehmann, Jens

EvoChef: Show Me What to Cook! Artificial Evolution of Culinary Arts Inproceedings

Computational Intelligence in Music, Sound, Art and Design - 8th International Conference, EvoMUSART 2019, Held as Part of EvoStar 2019, Leipzig, Germany, April 24-26, 2019, Proceedings, pp. 156–172, Springer, 2019.

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Ibrahim, Shimaa; Fathalla, Said; Yazdi, Hamed Shariat; Lehmann, Jens; Jabeen, Hajira

From Monolingual to Multilingual Ontologies: The Role of Cross-Lingual Ontology Enrichment Inproceedings

Semantic Systems. The Power of AI and Knowledge Graphs - 15th International Conference, SEMANTiCS 2019, Karlsruhe, Germany, September 9-12, 2019, Proceedings, pp. 215–230, Springer, 2019.

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Sui, Danning; Sejdiu, Gezim; Graux, Damien; Lehmann, Jens

The Hubs and Authorities Transaction Network Analysis using the SANSA framework Inproceedings

Proceedings of the Posters and Demo Track of the 15th International Conference on Semantic Systems co-located with 15th International Conference on Semantic Systems (SEMANTiCS 2019), Karlsruhe, Germany, September 9th - to - 12th, 2019, CEUR-WS.org, 2019.

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Maqbool, Fahad; Razzaq, Saad; Lehmann, Jens; Jabeen, Hajira

Scalable Distributed Genetic Algorithm Using Apache Spark (S-GA) Inproceedings

Intelligent Computing Theories and Application - 15th International Conference, ICIC 2019, Nanchang, China, August 3-6, 2019, Proceedings, Part I, pp. 424–435, Springer, 2019.

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Mami, Mohamed Nadjib; Graux, Damien; Scerri, Simon; Jabeen, Hajira; Auer, Sören; Lehmann, Jens

Uniform Access to Multiform Data Lakes using Semantic Technologies Inproceedings

Proceedings of the 21st International Conference on Information Integration and Web-based Applications & Services, iiWAS 2019, Munich, Germany, December 2-4, 2019, pp. 313–322, ACM, 2019.

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Sakor, Ahmad; Mulang, Isaiah Onando; Singh, Kuldeep; Shekarpour, Saeedeh; Vidal, Maria-Esther; Lehmann, Jens; Auer, Sören

Old is Gold: Linguistic Driven Approach for Entity and Relation Linking of Short Text Inproceedings

Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, NAACL-HLT 2019, Minneapolis, MN, USA, June 2-7, 2019, Volume 1 (Long and Short Papers), pp. 2336–2346, Association for Computational Linguistics, 2019.

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Ali, Mehdi; Vahdati, Sahar; Singh, Shruti; Dasgupta, Sourish; Lehmann, Jens

Improving Access to Science for Social Good Inproceedings

Machine Learning and Knowledge Discovery in Databases - International Workshops of ECML PKDD 2019, Würzburg, Germany, September 16-20, 2019, Proceedings, Part I, pp. 658–673, Springer, 2019.

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Sadeghi, Afshin; Lehmann, Jens

Linking Physicians to Medical Research Results via Knowledge Graph Embeddings and Twitter Inproceedings

Machine Learning and Knowledge Discovery in Databases - International Workshops of ECML PKDD 2019, Würzburg, Germany, September 16-20, 2019, Proceedings, Part I, pp. 622–630, Springer, 2019.

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Ali, Mehdi; Hoyt, Charles Tapley; Domingo-Fernández, Daniel; Lehmann, Jens

Predicting Missing Links Using PyKEEN Inproceedings

Proceedings of the ISWC 2019 Satellite Tracks (Posters & Demonstrations, Industry, and Outrageous Ideas) co-located with 18th International Semantic Web Conference (ISWC 2019), Auckland, New Zealand, October 26-30, 2019, pp. 245–248, CEUR-WS.org, 2019.

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Chaudhuri, Debanjan; Rony, Md. Rashad Al Hasan; Jordan, Simon; Lehmann, Jens

Using a KG-Copy Network for Non-goal Oriented Dialogues Inproceedings

The Semantic Web - ISWC 2019 - 18th International Semantic Web Conference, Auckland, New Zealand, October 26-30, 2019, Proceedings, Part I, pp. 93–109, Springer, 2019.

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Dubey, Mohnish; Banerjee, Debayan; Abdelkawi, Abdelrahman; Lehmann, Jens

LC-QAD 2.0: A Large Dataset for Complex Question Answering over Wikidata and DBpedia Inproceedings

The Semantic Web - ISWC 2019 - 18th International Semantic Web Conference, Auckland, New Zealand, October 26-30, 2019, Proceedings, Part II, pp. 69–78, Springer, 2019.

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Frey, Johannes; Hofer, Marvin; Obraczka, Daniel; Lehmann, Jens; Hellmann, Sebastian

DBpedia FlexiFusion the Best of Wikipedia Wikidata Your Data Inproceedings

The Semantic Web - ISWC 2019 - 18th International Semantic Web Conference, Auckland, New Zealand, October 26-30, 2019, Proceedings, Part II, pp. 96–112, Springer, 2019.

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260 entries « 1 of 6 »