=Paper=
{{Paper
|id=Vol-1626/DARe-16_0_invited
|storemode=property
|title=None
|pdfUrl=https://ceur-ws.org/Vol-1626/DARe-16_0_invited.pdf
|volume=Vol-1626
}}
==None==
<pdf width="1500px">https://ceur-ws.org/Vol-1626/DARe-16_0_invited.pdf</pdf>
<pre>
 Three Tools of Belief Change: Selection,
       Retention and Distribution
                              Abhaya Nayak
                          Intelligent Systems Group
                         Department of Computing
                        Macquarie University, Australia



                                    Abstract

    Belief Change deals with how a belief state should rationally be modified in
response to some observation made or evidence received. There are several re-
lated approaches to deal with different issues relevant to belief change. A body
of knowledge could be a finite set or infinite, the modification method could be
used on a one off basis or repeatedly, the body of knowledge could be probabilis-
tic or non-probabilistic, the modification could involve removal of knowledge
or addition of knowledge, and so on. There are some standard tools that are
used in modifying a body of knowledge. The “selection” tool is possibly the best
known among them. It comes in the form of epistemic entrenchment, plausi-
bility ordering or other such tie breaking mechanisms, and used mostly in the
context of non-probabilistic belief change. In the probabilistic context we need
two more tools, Retention and Distribution that will help with rational modi-
fication of probabilistic knowledge. In this talk I will briefly touch upon some
ideas in this context.




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</pre>