An effective similarity-based trust model in open distributed system

Aim: To our knowledge, existing trust models do not take into consideration the situation that, in an open distributed system, some nodes may have some information providers that have irresponsible bartering history. Our similarity-based trust model is, we believe, effective in suppressing the irresponsible information providers. Section 1 of the full paper gives the nomenclature and discusses the relevant research. Subsection 2.2 and section 3 explain our effective similarity-based trust model; among the equations we derived, eqs. (4) and (9) are the most important. Section 4 simulates our trust model and compares it with the traditional trust models. The simulation results, presented in Figs.1 through 3, and their comparison show preliminarily that our similarity-based trust model can effectively increase the success rate of interaction between service requestors and information providers.