Blockchain-Enabled Trust Building for Managing Consensus in Linguistic Opinion Dynamics
IEEE Transactions on Fuzzy Systems
Blockchain technology, linguistic terms, opinion dynamics' models (ODMs), trust building, Z -numbers
To manage consensus in opinion dynamics models (ODMs), removing bias from agents' interactions and considering their willingness are critical. It can be accomplished by providing a secure mechanism that does not disclose agents' identities and opinions in their interactions, eliminating the impact of opinion similarity on trust building. To build trust and consensus opinion, we propose a linguistic ODM based on the Blockchain technology. This model allows agents' opinions to be expressed using Z-numbers, as opposed to regular ODMs with numerical opinions. Agents are encouraged to modify their initial opinions in response to a minimum cost consensus model. Willingness of agents to accept or refuse the suggested modifications is realized through a Blockchain regime to avoid bias. The regime, however, must be supported by a trust-building mechanism to persuade agents to alter their opinions. To this end, we propose a Blockchain-enabled trust-building mechanism to improve agents' trust and guide them toward a consensus opinion. Following a sensitivity analysis of the underlying assumptions in the developed model, the proposed ODM is tested for its efficiency and validity.
Hassani, Hossein; Razavi-Far, Roozbeh; Saif, Mehrdad; and Herrera-Viedma, Enrique. (2023). Blockchain-Enabled Trust Building for Managing Consensus in Linguistic Opinion Dynamics. IEEE Transactions on Fuzzy Systems, 31 (8), 2722-2733.