Jazero: A Semantic Table Search System
Martin Pekár Christensen, Matteo Lissandrini, Katja Hose. (2026). "Jazero: A Semantic Table Search System." ICDE 2026.
CV
I am a computer science Ph.D. candidate at Aalborg University and my research is in semantic data lakes, where I work on enabling semantic-aware data lake search by utilizing knowledge graphs and example-driven querying, scalable Big data management, entity linking, and (progressive) data lake indexing.
Publications
An End-to-End Re-Evaluation of Table Entity-Linking Systems
Martin Pekár Christensen, Matteo Lissandrini, Katja Hose. (2026). "An End-to-End Re-Evaluation of Table Entity-Linking Systems." ICDE 2026.
Fantastic Tables and Where to Find Them: Table Search in Semantic Data Lakes
Martin Pekár Christensen, Aristotelis Leventidis, Matteo Lissandrini, Laura Di Rocco, Renée J. Miller, Katja Hose. (2024). "Fantastic Tables and Where to Find Them: Table Search in Semantic Data Lakes." EDBT 2025.
A Large Scale Test Corpus for Semantic Table Search
Aristotelis Leventidis, Martin Pekár Christensen, Matteo Lissandrini, Laura Di Rocco, Katja Hose, Renée J. Miller. (2024). "A Large Scale Test Corpus for Semantic Table Search." SIGIR 2024.
DBpedia RDF2Vec Graph Embeddings
Martin Pekár Christensen, Matteo Lissandrini, Katja Hose. (2022). "DBpedia RDF2Vec Graph Embeddings (1.0.2).".
Talks
Presentation of ‘Fantastic Tables and Where to Find Them: Table Search in Semantic Data Lakes’
Talk at EDBT'25, Barcelona, Spain
Presentation of ‘A Large Scale Test Corpus for Semantic Table Search’
Talk at SIGIR'24, Washington D.C.
Education
- Ph.D in Computer Science, Aalborg University, 2025 (expected)
- M.S. in Software, Aalborg University University, 2023
- B.S. in Software, Aalborg University, 2020
Positions
- June, 2024 - September 2024: Hasso Plattner Institute - Research visitor
- September, 2021 - August, 2025 (expected): Aalborg University - PhD candidate on semantic data lakes
- November, 2020 - August, 2021: Aalborg University - Research Assistant on RDF graph database query optimization
- April, 2015 - October, 2020: Nykilde Aps - Software developer
Teaching
Skills
- C/C++, Python, Bash, and Java
- SQL, SPARQL, and Cypher
- Relational and graph databases
- Graph theory
- Algorithm development
- Data management indexes
- Large-scale system architectures
- Scalability and performance optimization
- Multi-threading
- Big Data management
- Data integration
- Dataset search
- Information retrieval
- Semantic Web
- Linux
- Docker