Natural Intelligence – Commonsense Question Answering with Conceptual Graphs

  • Fatih Mehmet Güler
  • Aysenur Birturk
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6208)


Natural Intelligence (NI) is a question answering system based on Combinatory Categorial Grammar (CCG) as the theory of grammar and Conceptual Graphs (CG) for knowledge representation and reasoning. CCG is a lexicalized theory of grammar and very suitable for semantic analysis. Conceptual Graphs is a special kind of semantic network which can express full first-order logic. It aims to address the problem of commonsense reasoning in question answering, by using the state of the art tools such as C&C tools, Cogitant and Open Cyc. C&C tools are used for parsing natural language, Cogitant is used for Conceptual Graph operations, and Open Cyc is used for upper ontology and commonsense handling.


Combinatory Categorial Grammar Conceptual Graphs  Commonsense Reasoning Open Cyc 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Fatih Mehmet Güler
    • 1
  • Aysenur Birturk
    • 1
  1. 1.Department of Computer EngineeringMETUAnkaraTurkey

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