Class PAUpdateOperator

java.lang.Object
org.tweetyproject.arg.prob.dynamics.AbstractPAChangeOperator
org.tweetyproject.arg.prob.dynamics.PAUpdateOperator
All Implemented Interfaces:
ChangeOperator

public class PAUpdateOperator extends AbstractPAChangeOperator
This operator implements an update of some probabilistic assessment of arguments upon the observation of an argumentation theory. More specifically, for a given probabilistic semantics S, some norm N, a function f, and a partial probability assignment PPA, it computes the S-prob-function that 1.) has minimal N-distance to PPA-compliant prob'functions and 2.) maximizes function f.
Author:
Matthias Thimm
  • Constructor Details

    • PAUpdateOperator

      public PAUpdateOperator(PASemantics semantics, RealVectorNorm norm, SimpleRealValuedFunction f)
      Creates a new change operator for the given semantics that uses the specified norm for distance measuring and the given function for optimizing.
      Parameters:
      semantics - the semantics used for change.
      norm - the norm used for distance measurement between probabilistic extensions.
      f - the function that is maximized on the set of probabilistic extensions with minimal distance.
  • Method Details

    • change

      Description copied from interface: ChangeOperator
      Given a partial probability assignment ppa and an argumentation theory, compute the closest probabilistic extension that is adequate for observing the theory in the state ppa.
      Specified by:
      change in interface ChangeOperator
      Specified by:
      change in class AbstractPAChangeOperator
      Parameters:
      ppa - some partial probability assignment.
      theory - some theory.
      Returns:
      the closest probabilistic extension that is adequate for observing the theory in the state ppa.