Analysis of the performance of symbols of cement companies in the Tehran Stock Exchange, using data envelopment analysis based on integer indices

Considering the important role of the construction industry in the form of one of the expandable industries for economic growth, increasing GDP and job creation, as well as the great relationship between construction and its required tools, such as machinery, materials Construction, tools, etc., scientific study of each of these sectors, provides the possibility of better development in the construction industry, the results of which can suggest solutions to boost national production. Since cement as an underlying commodity is a widely used material in construction and concreting, and investing in cement companies can play an important role in improving their process, so in this The paper examines the efficiency of symbols of cement companies in the Tehran Stock Exchange using data envelopment analysis. Due to the fact that some of the indicators extracted from the stock market are usually integers, in this study, a data envelopment analysis model in mixed integer programming class (MILP) has been used, which is capable of processing continuous data. an‎d has the integer together. The results presented in this article can be effective on managers' decisions to increase capital or on how to invest in cement companies.