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 hash...

In Classical Bayesian approach, estimation of lifetime data usually is dealing with precise information. However, in real world, some informations about an underlying system might be imprecise and represented in the form of vague quantities. In these situations, we need to generalize classical methods to vague environment for studying and analyzing the systems of interest. In this paper, we pro...

A new approach for multiple attribute group decision making (MAGDM) problems where the attribute weights and the expert weights are real numbers and the attribute values take the form of vague values, is presented in this paper. Since families of ordered weighted averaging (OWA) operators are available in the literature, and only a few available for vague sets, the vague ordered weighted averag...

Information Retrieval (IR) is often confronted with different and heterogeneous collections of multilingual and multimedial content. Transformations are necessary in order to map between different representation schemes which are the result of different content analysis methods and different terminologies. Vague methods which have been sucessfully applied to IR seem especially suited to tackle ...