Principal Scientist
Amazon Alexa AI
Principal Investigator ScaDS.AI, TU Dresden
Member of Institute for Applied Informatics, Dresden / Leipzig
Profiles: LinkedIn, Google Scholar, DBLP, Web-ID
Office
Amazon Office: Großenhainer Str. 5a, 01097 Dresden
InfAI: Schnorrstraße 70, 01069 Dresden
Short CV
Jens Lehmann (http://www.jens-lehmann.org) works full time as a principal scientist at Amazon Alexa AI. He also leads the „Smart Data Analytics“ research group with his affiliated senior researchers at InfAI and TU Dresden as well as his PhD students. Previously, he was a lead scientist for Conversational AI and Knowledge Graphs at Fraunhofer IAIS and a full professor (W3) at the University of Bonn. His research interests involve Semantic Web, machine learning, question answering & dialogue systems, distributed computing and knowledge representation. Please see his website for more details.
Research Interests
- Machine Learning
- Semantic Web & Knowledge Graphs
- Conversational AI
Publications
2020
MLM: A Benchmark Dataset for Multitask Learning with Multiple Languages and Modalities Inproceedings
In: CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020, pp. 2967–2974, ACM, 2020.
Evaluating the Impact of Knowledge Graph Context on Entity Disambiguation Models Inproceedings
In: CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020, pp. 2157–2160, ACM, 2020.
Language Model Transformers as Evaluators for Open-domain Dialogues Inproceedings
In: 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.
TeRo: A Time-aware Knowledge Graph Embedding via Temporal Rotation Inproceedings
In: Proceedings of the 28th International Conference on Computational Linguistics, COLING 2020, Barcelona, Spain (Online), December 8-13, 2020, pp. 1583–1593, International Committee on Computational Linguistics, 2020.
Knowledge Graph Embeddings in Geometric Algebras Inproceedings
In: Proceedings of the 28th International Conference on Computational Linguistics, COLING 2020, Barcelona, Spain (Online), December 8-13, 2020, pp. 530–544, International Committee on Computational Linguistics, 2020.
Unveiling Relations in the Industry 4.0 Standards Landscape Based on Knowledge Graph Embeddings Inproceedings
In: Database and Expert Systems Applications - 31st International Conference, DEXA 2020, Bratislava, Slovakia, September 14-17, 2020, Proceedings, Part II, pp. 179–194, Springer, 2020.
The Effect of Rule Injectionin a Leakage Free Dataset Inproceedings
In: Proceedings of the International Workshop on Knowledge Representation and Representation Learning co-located with the 24th European Conference on Artificial Intelligence (ECAI 2020), Virtual Event, September, 2020, pp. 28–35, CEUR-WS.org, 2020.
MDE: Multiple Distance Embeddings for Link Prediction in Knowledge Graphs Inproceedings
In: 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.
Multiple Run Ensemble Learning with Low Dimensional Knowledge Graph Embeddings Inproceedings
In: Proceedings of the International Workshop on Knowledge Representation and Representation Learning co-located with the 24th European Conference on Artificial Intelligence (ECAI 2020), Virtual Event, September, 2020, pp. 36–42, CEUR-WS.org, 2020.
Distantly Supervised Question Parsing Inproceedings
In: 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.
Message Passing for Hyper-Relational Knowledge Graphs Inproceedings
In: 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.
Ontology Design for Pharmaceutical Research Outcomes Inproceedings
In: 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.
Affinity Dependent Negative Sampling for Knowledge Graph Embeddings Inproceedings
In: Proceedings of the Workshop on Deep Learning for Knowledge Graphs (DL4KG2020) co-located with the 17th Extended Semantic Web Conference 2020 (ESWC 2020), Heraklion, Greece, June 02, 2020 - moved online, CEUR-WS.org, 2020.
Training Multimodal Systems for Classification with Multiple Objectives Inproceedings
In: 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. 57–71, CEUR-WS.org, 2020.
A Neural-based model to Predict the Future Natural Gas Market Price through Open-domain Event Extraction Inproceedings
In: 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.
VQuAnDa: Verbalization QUestion ANswering DAtaset Inproceedings
In: The Semantic Web - 17th International Conference, ESWC 2020, Heraklion, Crete, Greece, May 31-June 4, 2020, Proceedings, pp. 531–547, Springer, 2020.
Embedding-Based Recommendations on Scholarly Knowledge Graphs Inproceedings
In: The Semantic Web - 17th International Conference, ESWC 2020, Heraklion, Crete, Greece, May 31-June 4, 2020, Proceedings, pp. 255–270, Springer, 2020.
MINDS: A Translator to Embed Mathematical Expressions Inside SPARQL Queries Inproceedings
In: 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.
A Distributed Approach for Parsing Large-scale OWL Datasets Inproceedings
In: 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.
Semantic Representation of Physics Research Data Inproceedings
In: 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.
Cross-administration comparative analysis of open fiscal data Inproceedings
In: ICEGOV 2020: 13th International Conference on Theory and Practice of Electronic Governance, Athens, Greece, 23-25 September, 2020, pp. 459–468, ACM, 2020.
Meta-hyperband: Hyperparameter Optimization with Meta-learning and Coarse-to-Fine Inproceedings
In: 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.
In: 2020 International Joint Conference on Neural Networks, IJCNN 2020, Glasgow, United Kingdom, July 19-24, 2020, pp. 1–9, IEEE, 2020.
Treating Dialogue Quality Evaluation as an Anomaly Detection Problem Inproceedings
In: 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.
DISE: A Distributed in-Memory SPARQL Processing Engine over Tensor Data Inproceedings
In: IEEE 14th International Conference on Semantic Computing, ICSC 2020, San Diego, CA, USA, February 3-5, 2020, pp. 400–407, IEEE, 2020.
Let's build Bridges, not Walls: SPARQL Querying of TinkerPop Graph Databases with Sparql-Gremlin Inproceedings
In: IEEE 14th International Conference on Semantic Computing, ICSC 2020, San Diego, CA, USA, February 3-5, 2020, pp. 408–415, IEEE, 2020.
PNEL: Pointer Network Based End-To-End Entity Linking over Knowledge Graphs Inproceedings
In: The Semantic Web - ISWC 2020 - 19th International Semantic Web Conference, Athens, Greece, November 2-6, 2020, Proceedings, Part I, pp. 21–38, Springer, 2020.
Fantastic Knowledge Graph Embeddings and How to Find the Right Space for Them Inproceedings
In: The Semantic Web - ISWC 2020 - 19th International Semantic Web Conference, Athens, Greece, November 2-6, 2020, Proceedings, Part I, pp. 438–455, Springer, 2020.
CASQAD - A New Dataset for Context-Aware Spatial Question Answering Inproceedings
In: The Semantic Web - ISWC 2020 - 19th International Semantic Web Conference, Athens, Greece, November 2-6, 2020, Proceedings, Part II, pp. 3–17, Springer, 2020.
Temporal Knowledge Graph Completion Based on Time Series Gaussian Embedding Inproceedings
In: The Semantic Web - ISWC 2020 - 19th International Semantic Web Conference, Athens, Greece, November 2-6, 2020, Proceedings, Part I, pp. 654–671, Springer, 2020.
Multilingual Ontology Merging Using Cross-lingual Matching Inproceedings
In: IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology, WI/IAT 2020, Melbourne, Australia, December 14-17, 2020, pp. 113–120, IEEE, 2020.
OWLStats: Distributed Computation of OWL Dataset Statistics Inproceedings
In: IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology, WI/IAT 2020, Melbourne, Australia, December 14-17, 2020, pp. 381–386, IEEE, 2020.
3D Learning and Reasoning in Link Prediction Over Knowledge Graphs Journal Article
In: IEEE Access, vol. 8, pp. 196459–196471, 2020.
IOTA: Interlinking of heterogeneous multilingual open fiscal DaTA Journal Article
In: Expert Syst. Appl., vol. 147, pp. 113135, 2020.
No one is perfect: Analysing the performance of question answering components over the DBpedia knowledge graph Journal Article
In: J. Web Semant., vol. 65, pp. 100594, 2020.
Schema-agnostic SPARQL-driven faceted search benchmark generation Journal Article
In: J. Web Semant., vol. 65, pp. 100614, 2020.
IQA: Interactive query construction in semantic question answering systems Journal Article
In: J. Web Semant., vol. 64, pp. 100586, 2020.
2019
Clustering Pipelines of Large RDF POI Data Inproceedings
In: 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.
Towards a Scalable Semantic-Based Distributed Approach for SPARQL Query Evaluation Inproceedings
In: 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.
Complex Query Augmentation for Question Answering over Knowledge Graphs Inproceedings
In: 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.
Querying Large-scale RDF Datasets Using the SANSA Framework Inproceedings
In: 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.
Sparklify: A Scalable Software Component for Efficient Evaluation of SPARQL Queries over Distributed RDF Datasets Inproceedings
In: 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.
New label noise injection methods for the evaluation of noise filters Journal Article
In: Knowl. Based Syst., vol. 163, pp. 693–704, 2019.
DBpedia FlexiFusion the Best of Wikipedia textbackslashtextgreater Wikidata textbackslashtextgreater Your Data Inproceedings
In: 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.
Big POI data integration with Linked Data technologies Inproceedings
In: 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.
Pay for Performance in Electronic Data Capture for Clinical Trials and Medical Registries Inproceedings
In: 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.
SimpleLSTM: A Deep-Learning Approach to Simple-Claims Classification Inproceedings
In: 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.
OECM: A Cross-Lingual Approach for Ontology Enrichment Inproceedings
In: 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.
Incorporating Joint Embeddings into Goal-Oriented Dialogues with Multi-task Learning Inproceedings
In: The Semantic Web - 16th International Conference, ESWC 2019, Portorov z, Slovenia, June 2-6, 2019, Proceedings, pp. 225–239, Springer, 2019.
EvoChef: Show Me What to Cook! Artificial Evolution of Culinary Arts Inproceedings
In: 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.