• Are Ontologies Trees or Lattices? 

      Sperberg-McQueen, Michael; Huitfeldt, Claus (Journal article; Peer reviewed, 2023)
      Ontologies, it is sometimes said, take the form of a hierarchy or tree: each class is subdivided into distinct subclasses with no cross classifications. But if the purpose of an ontology is to make possible useful inferences ...
    • Document similarity 

      Huitfeldt, Claus; Sperberg-McQueen, C. Michael (Journal article; Peer reviewed, 2020)
      In recent years, development of tools and methods for measuring document similarity has become a thriving field in informatics, computer science, and digital humanities. Historically, questions of document similarity have ...