What is in Your Knowledge Graph?

Visual schema summaries and queries from the schema environment to explore the KG contents




Visual Tool

We implement most of our ideas in ViziQuer tool (follow this link for previous research and wider context explanation, as well).

News

04-09-2025
Demonstrations at Semantics 2025 conference: - Visual Schemas and Queries for Knowledge Graph Exploration, Demo resource: Schema Query Walk-through
- How to Add a User Interface on Top of an External SPARQL Endpoint: Case Nobel Prize Sampo, Demo resource: Nobel Prize Sampo portal
- Adding Context in OWL Ontologies: Visual Qualifiers in OWLGrEd

04-08-2025
Three papers accepted for Semantics 2025 Poster and Demonstration Session (with publication in CEUR Workshop Proceedings):
- Visual Schemas and Queries for Knowledge Graph Exploration by K.Čerāns, J.Ovčiņņikova, M.Grasmanis and L.Lāce Download the author manuscript
- How to Add a User Interface on Top of an External SPARQL Endpoint: Case Nobel Prize Sampo by N.K.Grīslis, K.Čerāns, M.Grasmanis, H.Rantala and E.Hyvönen (nice student work and cooperation with reserachers from Aalto University, Finland) Download the author manuscript
- Adding Context in OWL Ontologies: Visual Qualifiers in OWLGrEd by J.Ovčiņņikova and K.Čerāns Download the author manuscript

03-05-2025
Demonstration at ESWC 2025: Schema Fragment Visualization to View Knowledge Graph Entities in Context

13-04-2022
The paper Schema Fragment Visualization to View Knowledge Graph Entities in Context by S.Siliņa, L.Lāce, M.Grasmanis and K.Čerāns accepted for ESWC 2025 as a Demo paper. Download the author manuscript.

02-01-2025
Successful project start

Project aims

The project aims to develop a visual-based methodology and a prototype tooling for human overview of and interaction with distributed knowledge graph data, that can serve both the data analysts and more casual users in knowledge graph (KG) information overview, data exploration, and information retrieval tasks.

Project data Research project lzp-2024/1-0665, financed by Latvian Science Council.
Time frame: January 2025 - December 2027
Implemented at Institute of Mathematics and Computer Science, University of Latvia. Contact project leader Dr. Kārlis Čerāns

Project team
  • Prof. Kārlis Čerāns
  • Dr. Lelde Lāce
  • Dr. Uldis Bojārs
  • Dr. Jūlija Ovčiņņikova
  • Mikus Grasmanis
  • Sandra Siliņa
  • We work at Institute of Mathematics and Computer Science, University of Latvia

    Resources The publications created during the project and other project-releted resources are available on ViziQuer main page.