extended inference use case

From: Mike Dean (mdean@bbn.com)
Date: 02/04/03

  • Next message: Deborah McGuinness: "Re: extended inference use case" 
    I think we want to include something like this, although it
would probably be better as part of a larger Web Services or
other application use case.

  OWL places some limitations on expressivity to retain
  tractability.  A frequently cited limitation is "property
  chaining", the ability to express constraints among
  multiple properties.  We can augment an OWL ontology with
  additional inference rules.

  Several examples:

    2 siblings have the same father, i.e.

      sibling(S1, S2)
      father(S1, F)
      =>
      father(S2, F)

    a Debtor is a Person whose (cumulative) liabilities
    exceed his (cumulative) assets

	Mike

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