  The mixed Hegselmann-Krause (HK) model consists of a finite number of agents
characterized by their opinion, a vector in $\mathbf{R^d}$. For the
deterministic case, each agent updates its opinion by the rule: decide its
degree of stubbornness and mix its opinion with the average opinion of its
neighbors, the agents whose opinion differs by at most some confidence
threshold from its opinion at each time step. The mixed model is studied
deterministically in \cite{mHK}. In this paper, we study it
nondeterministically and involve a social relationship among the agents which
can vary over time. We investigate circumstances under which asymptotic
stability holds. Furthermore, we indicate the mixed model covers not only the
HK model but also the Deffuant model.
