STELAR-QA: Natural Language Interface for STELAR Knowledge Graph

STELAR-QA is a question-answering engine that provides a natural language interface to the STELAR Knowledge Graph, enabling both novice and expert users to query structured data. It translates natural language questions into executable SPARQL queries using advanced language models and NLP techniques. Designed as a spatiotemporal QA system, it builds on GeoQA, GeoQA2, and TerraQA, incorporating novel components within a modular pipeline architecture. The system enhances accessibility and query productivity, with components that identify entities and classes from the knowledge graph. Co-funded by the European Union, STELAR-QA supports semantic reasoning over RDF data stores.