Motivated by a specific decision-making situation, this work proposes the concept and definition of unsymmetrical basic uncertain information which is further generalization can model uncertainties in some new situations. We show that sense linguistic hedges such as “at least” most”. Formative weighted arithmetic means induced aggregations are defined for proposed concept. Rules-based decision ...

In the present paper the concept of uncertain resources in experimental design is extended to situations in which the desire for additional information increases with the amount of experiments available. For a number of simple but relevant examples diierent strategies are compared and optimal designs are developed in the scope of the theory of generalized designs.

unexpected economic and political events are considered important elements impacting investment decisions of the investors during stock transactions and changing the stock price in desirable or undesirable ways. the current study aims to provide a review on investors’ reaction to unexpected events in tehran stock exchange market. for this purpose, the daily returns of the period spanning 1386-1...