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Jan-Christoph Kalo

General

Dr. Jan-Christoph Kalo



Technische Universität Braunschweig
Institut für Informationssysteme
Mühlenpfordtstraße 23, 2.OG 
D-38106 Braunschweig


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Detail

I am now a researcher at KRR at VU Amsterdam.

My research interests focus on:

  • Heterogeneity in Knowledge Graphs
  • Information Extraction
  • Combining Knowledge Graphs and Language Models

Short CV

2014 - 2021        : Researcher at Institute for Information Systems, Braunschweig University of Technology
2012 - 2014       : Master of Science in Computer Science at Braunschweig University of Technology (grade: with honors)
                          Master's Thesis: Analyzing the Transitivity Problem in Instance Matching Tasks on Linked Data (grade: very good)
2008 - 2012       : Bachelor of Science in Computer Science at Braunschweig University of Technology
                          Bachelor's Thesis: Variants of the Fixed-Throw Snowblower Problem (grade: very good)

 

Teaching

Semester Role Lecture
Summer 2020 assistant Relational Database Systems 2
Winter 2019/20 assistant Seminar "Building and Managing Knowledge Graphs"
Summer 2019 assistant Relational Database Systems 2
Summer 2018 assistant Knowledge Based Systems and Deductive Databases
Winter 2017/18 assistant Relational Databases 1
Summer 2017 assistant Softwareentwicklungspraktikum (Trumps Up)
Winter 2016 assistant Relational Database Systems 1
Summer 2016 assistant Relational Database Systems 2
Winter 2015 assistant Linked Open Data Seminar, Relational Database Systems 1
Summer 2015 assistant Softwareentwicklungspraktikum(SQL Alchemist)
Winter 2014 assistant SQL Praktikum

 

 

Supervised Thesis

Thesis Type Title
Master Thesis Query expansion of SPARQL Queries using Association Rule Mining
Bachelor Thesis Detection of Vandalism on Open Knowledge Bases through Relational Learning
Bachelor Thesis Identification of Obligatory Attributes Using the Wikidata Version History
Bachelor Thesis Analysis of Wikidata Property Constraints
Bachelor Thesis Determining Obligatory Attributes with Knowledge Embeddings
Bachelor Thesis Anwering SPARQL Queries on Knowledge Embeddings
Bachelor Thesis Comparing Knowledge Embeddings and Association Rule Mining for Knowledge Base Completion
Bachelor Thesis Synonym Detection with Knowledge Embeddings
Bachelor Thesis Integrating a Causal Knowledge Base into Linked Open Data
Bachelor Thesis Analyzing Medical Citations in Wikipedia
Bachelor Thesis Word Embeddings for Triple Classification
Bachelor Thesis A SPARQL Approach for Exemplar Queries
Master Thesis Similarity of Types and Attributes in the Semantic Web
Master Thesis Analyzing Latent Anxiety in Texts
Project Thesis Causality Extraction from Natural Language Texts with Artificial Neural Networks
Bachelor Thesis Generalizing Causal Relations Extracted from News Articles
Publications
2021
Kroll, H., J. Pirklbauer, J. - C. Kalo, M. Kunz, J. Ruthmann, and W. - T. Balke, "Narrative Query Graphs for Entity-Interaction-Aware Document Retrieval", The 23rd International Conference on Asia-Pacific Digital Libraries (ICADL), Online, Springer, 12/2021. Abstract  Download: ICADL2021_Kroll_NarrativeQueryGraphs.pdf (1.44 MB)
Fichtel, L., J. - C. Kalo, and W. - T. Balke, "Prompt Tuning or Fine-Tuning - Investigating Relational Knowledge in Pre-Trained Language Models", 3rd International Conference on Automated Knowledge Base Construction (AKBC), Virtual, 08/2021. Abstract  Download: prompt_tuning_or_fine_tuning_i.pdf (251.89 KB)
Jain, N., J. - C. Kalo, W. - T. Balke, and R. Krestel, "Do Embeddings Actually Capture Knowledge Graph Semantics?", 18th Extended Semantic Web Conference (ESWC), Hersonissos, Greece, Springer, 06/2021. Abstract  Download: do_embeddings_actually_capture_knowledge_graph_semantics_.pdf (1.05 MB)
2020
Kalo, J. - C., L. Fichtel, P. Ehler, and W. - T. Balke, "KnowlyBERT - Hybrid Query Processing over Language Models and Knowledge Graphs", International Semantic Web Conference (ISWC), Athens, Greece, 11/2020. Abstract  Download: ISWC_20_KnowlyBERT.pdf (484.05 KB); knowlybert_slides_iswc2020.pdf (577.64 KB)
Kroll, H., J. - C. Kalo, D. Nagel, S. Mennicke, and W. - T. Balke, "Context-Compatible Information Fusion for Scientific Knowledge Graphs", 24th International Conference on Theory and Practice of Digital Libraries (TPDL), Lyon, France, Springer, 08/2020. Abstract  Download: TPDL2020_Kroll_Camera_Ready.pdf (308.77 KB)
Kalo, J. - C., S. Mennicke, P. Ehler, and W. - T. Balke, "Detecting Synonymous Properties by Shared Data-driven Definitions", Extended Semantic Web Conference (ESWC), Heraklion, Greece, 06/2020. Abstract  Download: ESWC_20_Camera_Ready.pdf (421.94 KB)
2019
Kalo, J. - C., P. Ehler, and W. - T. Balke, "Knowledge Graph Consolidation by Unifying Synonymous Relationships", International Semantic Web Conference (ISWC), Auckland, New Zealand, 10/2019. Abstract  Download: ISWC19CameraReady.pdf (503.5 KB)
Mennicke, S., J. - C. Kalo, D. Nagel, H. Kroll, and W. - T. Balke, "Fast Dual Simulation Processing of Graph Database Queries", IEEE 35th International Conference on Data Engineering (ICDE), Macau, China, IEEE, 04/2019. Abstract  Download: ICDE2019-MKNKB-Camera-Ready.pdf (399.3 KB)
2018
Mennicke, S., J. - C. Kalo, D. Nagel, H. Kroll, and W. - T. Balke, "Fast Dual Simulation Processing of Graph Database Queries (Supplement)", CoRR, Technical Report, vol. 1810.09355: arxiv.org, 10/2018.  Download: 1810.09355.pdf (321.93 KB)
Mennicke, S., J. - C. Kalo, and W. - T. Balke, "Using Queries as Schema-Templates for Graph Databases", Datenbank-Spektrum: Springer, 2018. Abstract  Download: Mennicke2018_Article_UsingQueriesAsSchema-Templates.pdf (650.77 KB)
2017
Mennicke, S., J. - C. Kalo, and W. - T. Balke, "Querying Graph Databases: What Do Graph Patterns Mean?", The 36th International Conference on Conceptual Modeling (ER), Valencia, Spain, 11/2017. Abstract  Download: ER_2017_cameraready.pdf (520.53 KB)
Mennicke, S., D. Nagel, J. - C. Kalo, N. Aumann, and W. - T. Balke, "Reconstructing Graph Pattern Matches Using SPARQL", 15th Lernen Wissen Daten Analysen (LWDA) Conference, Rostock, Germany, 09/2017. Abstract  Download: LWDA_2017_paper_43_0.pdf (310.62 KB)
Kalo, J. - C., C. Lofi, R. P. Maseli, and W. - T. Balke, "Semantic Query Processing: Estimating Relational Purity", 15th Lernen Wissen Daten Analysen (LWDA) Conference, Rostock, Germany, 09/2017. Abstract  Download: LWDA_2017_paper_15.pdf (1.01 MB)
2015
Kalo, J. - C., S. Homoceanu, J. Rose, and W. - T. Balke, "Avoiding Chinese Whispers: Controlling End-to-End Join Quality in Linked Open Data Stores", ACM Web Science 2015 (WebSci'15), Oxford, United Kingdom, 06/2015. Abstract  Download: WebSci15CameraReady-kalo.pdf (727.59 KB)
2014
Homoceanu, S., J. - C. Kalo, and W. - T. Balke, "Putting Instance Matching to the Test. Is Instance Matching Ready for Reliable Data Linking?", 21st International Symposium on Methodologies for Intelligent Systems (ISMIS), Roskilde, Denmark, 2014. Abstract  Download: ismis_homoceanu.pdf (832.92 KB)
Kalo, J. - C., "Analysing the Problem of Transitivity in Instance Matching Tasks on Linked Data", Carl-Friedrich-Gauß Fakultät: Technische Universität Braunschweig, 2014.  Download: thesis.pdf (2.69 MB)