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The Use of Situation Theory in Context Modeling Export

Computational Intelligence, Vol. 13, No. 3. (1997), pp. 427-438.

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context knowledge l3s_context_workshop model nlp

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Uses situation theory to model context.

Situation theory has two primitive notions: infons and situations.

It represents a context by on a situation type that supports two kinks of infons: (i) factual infons to state facts, and (ii) constraints (which correspond to parametric condidtionals) to capture the if-then relations holding within the contest.

It also shows how to do lifting with this model.

It has two major advantages over other context models:

1. Dynamic contexts through nonmonoticity

2. Natural language support

lillejul (public note) - 2007-10-03 18:27:36

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At the heart of natural language processing is the understanding of context dependent meanings. This paper presents a preliminary model of formal contexts based on situation theory. It also gives a worked-out example to show the use of contexts in lifting, i.e., how propositions holding in a particular context transform when they are moved to another context. This is useful in NLP applications where preserving meaning is a desideratum.


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