]> 2006-05-10T12:00:00-05:00 As the result is disseminated and assembled through the routes to the sink, the opinion will be propagated and regulated by Josang's belief model. Our trust based framework effectively quantifies the uncertainty in the data as well as aggregation results. Experimental results demonstrate that this framework provides a powerful mechanism for detecting compromised nodes and reasoning about uncertainty in the network. It can also purge false data to accomplish robust aggregation in the presence of compromised nodes. ]]>