Improved PBFT Algorithm Based on Vague Sets

The traditional PBFT consensus algorithm has several limitations in the consortium blockchain environment, such as unclear selection of primary node, excessive communication times, etc. To solve these limitations, an improved VS-PBFT based on vague sets was proposed. three phases: node partition, selection, and global consensus. Firstly, nodes whole network are partitioned using consistent hashing-like algorithm, then local is selected by each partition. run four-phase to complete analysis consistency shows that can improve fault-tolerant rate reduce complexity, dynamic; is, join quit adaptively.