Information Technology Reference
In-Depth Information
Source
Domain
(SD)
Target
Domain
(TD)
Direct
Relationship
Trust
Relationship
SD's DTT
Domain (D)
...
Domain (D)
Set of Recommenders
Domain (D)
...
Domain (D)
Set of Recommenders
Recommendation requested
Recommendation given based on direction relationship
Recommendation given based on recommendations received
FIGURE 6.2: The trust recommendation mechanism [Azzedin and Mah-
eswaran, 2003].
set up the trust relationship with TD, SD uses two sources of information: (a)
the direct trust relationship with TD obtained from SD's DTT, and (b) the
reputation trust relationship of TD obtained from SD's R. These two sources
of information need to be evaluated and updated if necessary. To update the
DTT, a running average of DTT can be kept.
Simulation results indicated that the proposed trust model was not adap-
tive to inconsistent DTT. Furthermore, if the trust model relies entirely on
the direct trust relationship, then it takes a long time to identify the bad
domains. However, if the trust model uses both direct relationships and rep-
utation values, identification of bad domains can be more e cient.
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