We contribute to fundations and applications of knowledge graphs. Touching their complete life cycle. This includes schema design (which is detailed on a seperate page), general principles and processes for graph design, deployment of large-scale graphs in application areas including the geo-sciences, digital humanities, and agricultural themes, as well as methods and applications for graph integration and schema alignment. 

Example Knowledge Graph Deployments

• The KnowWhereGraph
  • Key publication:
    • Know, Know Where, KnowWhereGraph: A Densely Connected, Cross-Domain Knowledge Graph and Geo-Enrichment Service Stack for Applications in Environmental Intelligence
  • Graph access
  • Project website
• Enslaved.org
  • Key publication:
    • The Enslaved Ontology: Peoples of the Historic Slave Trade
    • Ontology-based Data Organization for the Enslaved Project
  • Project website
  • Graph access
• GeoLink
  • Key publication:
    • The GeoLink Knowledge Graph
  • Project website
  • Graph access

Graph Integration and Ontology / Schema Alignment

Benchmarks:

• GeoLink
• Populated GeoLink
• Hygrography
• Populated Enslaved
• GeoLink Cruise

Systems:

• Association Rule-based Ontology Alignment System (AROA)

Showcase:

• The KnowWhereGraph merges novel Artificial Intelligence-based geoenrichment technologies with a knowledge graph that brings together open, cross-domain, densely integrated data spanning the human-environment interface.

Publications:

• AROA Results of OAEI 2020
• GeoLink Cruises: A Non-Synthetic Benchmark for Co-Reference Resolution on Knowledge Graphs
• The Enslaved Dataset: A Real-world Complex Ontology Alignment Benchmark using Wikibase
• Towards Evaluating Complex Ontology Alignments
• Alignment of Surface Water Ontologies: A comparison of manual and automated approaches
• AROA Results of 2019 OAEI
• GeoLink Dataset: A Complex Alignment Benchmark from Real-world Ontology
• Towards Association Rule-Based Complex Ontology Alignment
• A Complex Alignment Benchmark: Geolink dataset
• The First Version of the OAEI Complex Alignment Benchmark
• A Journey From Simple to Complex Alignment on Real-World Ontologies
• A Replication Study: Understanding What Drives the Performance in WikiMatch

Key Projects:

• KnowWhereGraph: Enriching and Linking Cross-Domain Knowledge Graphs using Spatially-Explicit AI Technologies
• Convergence Accelerator Phase I (RAISE): Spatially-Explicit Models, Methods, and Services for Open Knowledge Networks
• Ontology Modeling for the Slave Trade
• EarthCube Building Blocks: GeoLink - Leveraging Semantics and Linked Data for Data Sharing and Discovery in the Geosciences

External Links:

• Ontology Alignment Evaluation Inititive (OAEI)
• Ontology Matching (OM)