In this research, we proposed a new metaheuristic technique for stock portfolio multi-objective optimization employing the combination of Strength Pareto Evolutionary Algorithm (SPEA), Adaptive Neuro-Fuzzy Inference System (ANFIS) and Arbitrage Pricing Theory (APT). To generate the more precise model, ANFIS has implemented to envisage long-term movement values of the Tehran Stock Exchange (TSE)...

Since the 1970s, services marketing has grown into a major sub discipline of marketing. It is constantly claimed – but is refuted in the article – that services are now the dominant economic activity in developed countries and keeps growing while the two traditional goods sectors, manufacturing and agriculture, are declining. In today's competitive world, having expertise, knowledge and marketi...

passing two decades of tehran stock exchange reopening, the transaction volume and number of accepted companies in it, have been enormously increased and engaged so many real and incorporated stock holders. therefore, gradually it will find its significant role in the country economy and this will double the responsibility of researchers in the economic field for utilizing more new and effectiv...

Modern portfolio theory is based on the relationship between risk and return and in this paper, specific uncertainty conditions are introduced as ambiguity which affects the asset pricing. Also, the relationship between risk, ambiguity and return is examined. First, ambiguity is estimated by the means of three-variable and main component method, trading volume, ask-bid spread, error of earnings...