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Certainty about
the source
.0
1.0
I heard this directly
from John
1
There was no
misunderstanding
1.0
1
1.0
1
1.0
Mary told me this is
a John's opinion
I have read this
in John's letter
Impact of
the belief
1
Source's subjective
certainty about the belief
1.0
.0
1.0
.0
Impact of
the belief
1
John told me this is
surely true
1.0
.2
John wrote he has
some doubts about this
Mary told me John
does not believe this
1.0
Impact of
the belief
-1
1.0
Trustor's trustfulness
about the source
.0
1.0
John never lied to me
about such things
1
1.0
John is not interested
in betray me
1
1.0
-1
Mary says John is not
trustworthy on this
Figure 11.3
ANestedFCM
11.6 Converging and Diverging Belief Sources
In order to consider the contribution of different sources we need a theory of how they combine.
The combination of different information sources is a classical complex problem (Dragoni,
1992), (Castelfranchi, 1996). It is in particular an evident problem in the case in which we are
going to model human behaviors. In fact, humans use very different strategies and mechanisms,
essentially based on their personalities and experiences.
This problem is very relevant in the case in which there are diverging opinions (beliefs).
In these cases humans could use various heuristics for combining the opposite values simply
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