alireza alinezhad Articles List

List of Articles alireza alinezhad

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1 - Derivation of a Combined Method from Grey ANP and SIX SIQMA and TRIZ in Order to Prioritize Tehran Municipality Projects
alireza alinezhad Javad Khalili

Nowadays based on increasing problems of quality issues in organizations and problems and difficulties which occur in organizations decided to describe and evaluate some of the problems and difficulties of the Tehran municipality in this paper. At first, will define lar More

Nowadays based on increasing problems of quality issues in organizations and problems and difficulties which occur in organizations decided to describe and evaluate some of the problems and difficulties of the Tehran municipality in this paper. At first, will define large amounts of such projects which need improvement and priorities those with one of the methods of MCDM named ANP. It chose the most important project. To implement this project will face some known and some unknown problems. To identified and selected the problems used grey systems and found the most important problem by using grey degree possible which is one the newest decision making and mathematical evaluation techniques of indefinite and undefined data. Six Sigma is one of the most powerful tools and techniques for solving problems. The identified problem will be evaluated and analyzed by DMAIC cycle and six sigma methodology. By using PARETO chart and Minitab software main reasons of the subject are specified and solved then. improve it by using creative and inventive techniques of TRIZ problem-solving at last. Manuscript profile
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2 - Provide a Data Envelopment Analysis/Data Mining Integrated Model for Evaluation of Decision-making Units
Alireza Alinezhad Javad Khalili

Efficiency is an important issue for the managers of different companies and organizations, as well as customers who are interested in services of these companies and organizations. The aim of this research is to study the efficiency of pharmaceutical companies accepted More

Efficiency is an important issue for the managers of different companies and organizations, as well as customers who are interested in services of these companies and organizations. The aim of this research is to study the efficiency of pharmaceutical companies accepted in stock exchange organization using Data Envelopment Analysis (DEA) and then, providing some rules using the decision tree. The Malmquist index partly resolves the problem of inadequacy of the observations by enabling the combination of time-series and cross-sectional observations. This method acts on the basis of moving average and it is of use for finding performance trends of a unit during the time. In this research, regarding the inputs and outputs and using the Malmquist index, efficiency evaluation of 22 pharmaceutical companies accepted in stock exchange organization has been done in the state of constant returns to scale during 2012-2016, and the results obtained were used as the class label of Decision-Making Units (DMUs) which are in fact inputs of decision tree method. Finally, using the decision tree, rules implicit in the data, are extracted. Manuscript profile
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3 - Multi-objective Portfolio Optimization Model by Fruit Fly Optimization Algorithm
Amir Amini alireza alinezhad

One of the most famous optimization problems in the field of financial engineering is portfolio selection problem. In its simplest form, while trying to minimize risk in the portfolio selection according to defined constraints such as budget and integer constraints it d More

One of the most famous optimization problems in the field of financial engineering is portfolio selection problem. In its simplest form, while trying to minimize risk in the portfolio selection according to defined constraints such as budget and integer constraints it deals with selecting a basket of various assets. Generally, investors prefer to invest in some assets rather than investing in only one asset to reduce unsystematic risk by diversifying their investment. Complex computational models have been developed to solve this problem and there is not an optimal solution for many of them. In this paper, a new and innovative approach known as fruit fly optimization algorithm (FOA) is used for multi-objective problem solving based on mean-variance Markowitz problem with class and cardinality constraints. Fruit fly optimization algorithm is a new way to find the overall optimal solution based on the behavior of the fruit fly in finding food. So far, few studies have been done on this algorithm and almost none of them used this algorithm for portfolio optimization problem. The results indicated the better comparative performance of the algorithm compared to the genetic algorithm for data set of Tehran stock exchange.JEL classification: G1, P5, O3 Manuscript profile
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4 - A Framework for Dynamic MCDM in Fuzzy Environment (Case Study: Emergency Department and Triage Patients)
alireza alinezhad

The classic multiple-criteria decision making (MCDM) model assumes that, when taking a decision, the decision maker has defined a fixed set of criteria and is presented with a clear picture of all available alternatives. The task then reduces to computing the score of e More

The classic multiple-criteria decision making (MCDM) model assumes that, when taking a decision, the decision maker has defined a fixed set of criteria and is presented with a clear picture of all available alternatives. The task then reduces to computing the score of each alternative, thus producing a ranking, and choosing the one that maximizes this value. However, most real-world decisions take place in a dynamic environment, where the final decision is only taken at the end of some exploratory process. Dynamic decisions arise in many applications including military, medical, management, sports and emergency situations. This study proposes a flexible framework for dynamic MCDM, based on the concept of fuzzy sets theory and the VIKOR method to provide a rational, scientific and systematic process for prioritizing patients in Emergency Department (ED) under a fuzzy environment where the uncertainty, subjectivity, and vagueness are addressed with linguistic variables parameterized by triangular fuzzy numbers. Manuscript profile

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List of Articles alireza alinezhad