Advanced Query Functionalities in Natural Logic Knowledge Bases

Troels Andreasen*, Henrik Bulskov, Jørgen Fischer Nilsson

*Corresponding author for this work

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Natural logics are formal logics characterized by expressions that bear a resemblance to simplified natural language sentences. The inherent readability of natural logics renders them suitable also for large knowledge bases. Within the realm of natural logics, the rules of logical proof are applicable directly to the sentences constructed using this framework. This direct application ensures explainability of query inferences. In the paper we describe a specific natural logic named NaturaLog, suited for ontology-structured knowledge bases. We outline how NaturaLog can be effectively implemented into a database system to facilitate deductive querying. The primary focus of this paper lies in exploring various query functionalities and elucidating methods to achieve these capabilities, also when dealing with large-scale knowledge bases.

Original languageEnglish
Article number96
JournalInternational Journal of Computational Intelligence Systems
Number of pages11
Publication statusPublished - 2024


  • Deductive querying
  • Explainability
  • Formal ontology
  • Knowledge bases
  • Natural logics


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