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Shervin Zakeri

Université de Genève, Geneva School of Economics and Management, PhD student

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A coffee addict who is in love with business
Phone: +41 22 388 17 00
Address: Geneva School of Management, Battelle Campus - Building B, Rue de la Tambourine 17, 1227 CAROUGE, SWISS

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Papers by Shervin Zakeri

Competitive Game Table and the Optimization Algorithm

A supplier selection model using the triangular fuzzy-grey numbers

IEEE Access

Selecting suppliers involves making decisions based on multiple criteria and options, making it a... more Selecting suppliers involves making decisions based on multiple criteria and options, making it a multi-criteria decision-making (MCDM) problem. Optimal decisions can help the entire supply chain to reduce costs and increase efficiency. However, uncertainty in supplier selection can increase the risk of incorrect choices and unforeseen consequences, which may stem from criteria weights or supplier performance. To address these challenges, this paper presents the Triangular Fuzzy-Grey (TFG) system, an innovative approach for MCDM problems. Integrating grey numbers and triangular fuzzy numbers, the TFG system extends fuzzy logic. Grey systems and fuzzy numbers are valuable tools in MCDM, each with their own advantages and limitations. Grey systems exhibit robustness in handling uncertain and incomplete information, aided by their intuitive models. They offer prediction capabilities and adaptability, although they may provide approximate solutions and rely on expert judgment, lacking a comprehensive theoretical foundation. Fuzzy numbers excel in handling uncertainty, accommodating vague data, and expressing linguistic preferences. They facilitate criteria aggregation and accommodate various decision variables. Combining grey systems and fuzzy numbers enhances decision-making, leveraging their strengths to address uncertainty and improve accuracy. The TFG system effectively handles uncertainty by assigning higher probabilities to smaller, more certain areas. To demonstrate its effectiveness, an integrated TFG WLD-SAW model is proposed for green supplier selection, where Supplier No.2 with ̂= 3.3202 is selected as the best green supplier. Comparative analysis using the Zakeri-Konstantas weighted rankings similarity measure shows that TFG WLD achieves similar results to fuzzy and grey WLD methods in solving the green supplier selection problem.

Introducing Alternatives Ranking with Elected Nominee (Arwen) Method: A Case Study of Supplier Selection

Technological and Economic Development of Economy

Supply chain management (SCM) has gradually evolved beyond the straightforward logic of benefits ... more Supply chain management (SCM) has gradually evolved beyond the straightforward logic of benefits and economic viewpoints. Supplier selection and performance evaluation are the crucial strategic components of any SCM system with a substantial economic impact and risk reduction. Several conflicting factors make supplier selection a challenging multi-criteria decision-making problem. This paper introduces a method called alternative ranking with the elected nominee (ARWEN) to select suppliers in Iran’s dairy product chain store. The primary principle of ARWEN is to choose the best alternative based on the lowest change rate rather than the elected nominee. Four extensions of the ARWEN method are proposed depending upon the nature and level of information available to the decision-makers. A fifth extended version termed E-ARWEN is also recommended to consider the negative form of the elected nominee. Two novel statistical tools, the ranking performance index and the Zakeri-Konstantas di...

A decision analysis model for material selection using simple ranking process

Scientific Reports

A large number of materials and various criteria fashion material selection problems as complex m... more A large number of materials and various criteria fashion material selection problems as complex multi-criteria decision-making (MCDM) problems. This paper proposes a new decision-making method called the simple ranking process (SRP) to solve complex material selection problems. The accuracy of the criteria weights has a direct impact on the outcomes of the new method. In contrast to current MCDM methods, the normalization step has been eliminated from the SRP method as a potential source of producing incorrect results. The application of the method is appropriate for situations with high levels of complexity in material selection because it only considers the ranks of alternatives in each criterion. The first scenario of vital-immaterial mediocre method (VIMM) is used as a tool to derive criteria weights based on expert assessment. The result of SRP is compared with a number of MCDM methods. In order to evaluate the findings of analytical comparison, a novel statistical measure know...

The Rate-Weight Connected Vectors Processor (RWCVP): A Method for Dealing with Uncertainty in MCDM Problems

2023 15th International Conference on Computer and Automation Engineering (ICCAE)

Handbook of Formal Optimization

Handbook of Formal Optimization

Mutriss a New Method for Material Selection Problems Using Multiple-Triangles Scenarios

SSRN Electronic Journal

Solving Decision-Making Problems Using a Measure for Information Values Connected to the Equilibrium Points (IVEP) MCDM Method and Zakeri–Konstantas Performance Correlation Coefficient

Information

In this paper, a new multicriteria decision-making (MCDM) method, called a measure for informatio... more In this paper, a new multicriteria decision-making (MCDM) method, called a measure for information values connected to the equilibrium points (IVEP) method, and a new statistical measure for measuring the similarities of performances of MCDM algorithm outputs in a comparison process, called the Zakeri–Konstantas performance correlation coefficient, are introduced. The IVEP method uses Shannon’s entropy as the primary tool to measure the information embedded in the decision matrix in order to evaluate the decision’s options/alternatives for complex decision-making problems with a large number of criteria and alternatives. The second concept that drives the IVEP method is the equilibrium points, which signify the points in a vector space where scores for the decision’s options/alternatives are equilibrated. Instead of using linear functions to compute similarities between the data sets generated by the MCDM algorithms by the calculation of the distance using different methods, the Zak...

A Supplier Selection Model Using Alternative Ranking Process by Alternatives’ Stability Scores and the Grey Equilibrium Product

Processes

Supply chain management begins with supplier evaluation and selection. The supplier selection dea... more Supply chain management begins with supplier evaluation and selection. The supplier selection deals with various criteria with different contexts which makes it a complex multi-criteria decision-making (MCDM) method. In this paper, a novel MCDM method, called the alternative ranking process by alternatives’ stability scores (ARPASS), is proposed to solve supplier selection problems. ARPASS considers each alternative as a system that is constructed on integrated components. To perform properly, a system requires high integrity and stability. ARPASS utilizes the stability of alternatives as an effective element for ranking the alternatives. The ARPASS is developed in two forms, ARPASS and ARPASS*. The new method utilizes standard deviations and Shannon’s entropy to compute the alternatives’ stabilities. In this paper, in addition to the new MCDM methods, a new method called the grey equilibrium product (GEP) is introduced to convert grey linguistic variables into crisp values, using d...

The Grey Ten-Element Analysis Method: A Novel Strategic Analysis Tool

Mathematics, 2022

In this paper, a new strategic analysis method is introduced, called the ten-element analysis (TE... more In this paper, a new strategic analysis method is introduced, called the ten-element analysis (TEA) method to determine the firm’s strategic position in the market. The new method is grounded on the computation of the reflections of the external factors on the firm’s internal factors through the changes of the values of the internal factors throughout the time when a lack of complete information regarding the environmental factors exists. The TEA method takes ten effective key elements of the firm into account and investigates their changes through a maximum of nine periods and a minimum of two periods. To conduct the model, the paper is mainly focused on four main rubrics, including the detection of the reflection of the firm’s environmental factors on the internal factors, deriving the strategic position of the firm from the reflections, the capability of the existing strategic models in determining the strategic position from the reflections in presence of uncertainty and incompl...

Ranking based on optimal points and win-loss-draw multi-criteria decision-making with application to supplier evaluation problem

Expert Systems with Applications, 2022

The vital-immaterial-mediocre multi-criteria decision-making method

Kybernetes, 2021

PurposeThis paper proposes a new multi-criteria decision-making method, called the vital-immateri... more PurposeThis paper proposes a new multi-criteria decision-making method, called the vital-immaterial-mediocre method (VIMM), to determine the weight of multiple conflicting and subjective criteria in a decision-making problem.Design/methodology/approachThe novel method utilizes pairwise comparisons, vector-based procedures and a scoring approach to determine weights of criteria. The VIMM compares alternatives by the three crucial components, namely the vital, immaterial and mediocre criteria. The vital criterion has the largest effect on the final results, followed by the mediocre criterion and then the immaterial criterion, which is the least impactful on the prioritization of alternatives. VIMM is developed in two forms where the first scenario is designed to solve one-goal decision-making problems, while the second scenario embraces multiple goals.FindingsTo validate the method’s performance and applicability, VIMM is applied to a problem of sustainable supplier selection. Compari...

The Orbital Systems: Theory Paradigm

International Journal of Applied Decision Sciences, 2021

A market selection approach for dairy companies

International Journal of Management and Decision Making, 2020

A Grey Approach for the Computation of Interactions Between Two Groups of Irrelevant Variables of Decision Matrices

Multiple Criteria Decision Making, 2022

Selection and Prioritization of The Best Strategies Based on Porter’s Generic Strategies .Focused on Waste Paper Recycling Companies in Domestic Market

Recently in Iran, One of the most successful businesses is the waste recycling. This business has... more Recently in Iran, One of the most successful businesses is the waste recycling. This business has opened its way as an old and a new business or industry form in domestic production chain. Old and new because of many different products that have recycled .Today many companies are producing and using recycles wastes and waste products as their industries raw materials. Cellulose wastes are widely used in the industries which use in paper mills for recycled paper products. By following of the growing industry and the untapped markets and the high volume of trade for industries, the wastes recycling companies need to choose the best strategies to obtain more shape of domestic markets or keep their shape. This paper aims to present a formulated selection of the best strategies due to the strengths, opportunities, limitations and threats of this special industry and market by analysis of a sample of the industry SWOT matrix and select them by FAHP. In this paper, the Generic strategies a...

The vital-immaterial-mediocre multi-criteria decision-making method

Kybernetes

PurposeThis paper proposes a new multi-criteria decision-making method, called the vital-immateri... more PurposeThis paper proposes a new multi-criteria decision-making method, called the vital-immaterial-mediocre method (VIMM), to determine the weight of multiple conflicting and subjective criteria in a decision-making problem.Design/methodology/approachThe novel method utilizes pairwise comparisons, vector-based procedures and a scoring approach to determine weights of criteria. The VIMM compares alternatives by the three crucial components, namely the vital, immaterial and mediocre criteria. The vital criterion has the largest effect on the final results, followed by the mediocre criterion and then the immaterial criterion, which is the least impactful on the prioritization of alternatives. VIMM is developed in two forms where the first scenario is designed to solve one-goal decision-making problems, while the second scenario embraces multiple goals.FindingsTo validate the method’s performance and applicability, VIMM is applied to a problem of sustainable supplier selection. Compari...

The orbital systems theory

International Journal of Applied Decision Sciences

In this paper, a new theory is introduced called orbital systems theory to handle the uncertainty... more In this paper, a new theory is introduced called orbital systems theory to handle the uncertainty of the natural phenomena, the complicated real-world problems, and the human's decision-making process which naturally creates the inconstancy and uncertainty in each process it involves. The philosophy of the new theory is established based on this hypothesis that every component of the universe is a box that carries the information and each one is constructed by the particular information concepts that move along specific orbits. The orbital system is an integral part of the new theory. As a restricted numeric system, its core is the concept of reality. An orbital system is developed based on five numerical spectra surrounded by four parallel dimensions of reality and certain reality. With considering 'time' as an element, each dimension adds entropy to the system, and increases/decreases the level of uncertainty.

Dairy market selection approach using MCDM methods: a case of Iranian dairy market

International Journal of Management and Decision Making

A Proposed Framework for Selection and Prioritization of the Best Strategies: A Hybrid SWOT Analysis, Fuzzy PROMETHEE II and Porter's Generic Strategies

Research Journal of Environmental and Earth Sciences

Competitive Game Table and the Optimization Algorithm

A supplier selection model using the triangular fuzzy-grey numbers

IEEE Access

Selecting suppliers involves making decisions based on multiple criteria and options, making it a... more Selecting suppliers involves making decisions based on multiple criteria and options, making it a multi-criteria decision-making (MCDM) problem. Optimal decisions can help the entire supply chain to reduce costs and increase efficiency. However, uncertainty in supplier selection can increase the risk of incorrect choices and unforeseen consequences, which may stem from criteria weights or supplier performance. To address these challenges, this paper presents the Triangular Fuzzy-Grey (TFG) system, an innovative approach for MCDM problems. Integrating grey numbers and triangular fuzzy numbers, the TFG system extends fuzzy logic. Grey systems and fuzzy numbers are valuable tools in MCDM, each with their own advantages and limitations. Grey systems exhibit robustness in handling uncertain and incomplete information, aided by their intuitive models. They offer prediction capabilities and adaptability, although they may provide approximate solutions and rely on expert judgment, lacking a comprehensive theoretical foundation. Fuzzy numbers excel in handling uncertainty, accommodating vague data, and expressing linguistic preferences. They facilitate criteria aggregation and accommodate various decision variables. Combining grey systems and fuzzy numbers enhances decision-making, leveraging their strengths to address uncertainty and improve accuracy. The TFG system effectively handles uncertainty by assigning higher probabilities to smaller, more certain areas. To demonstrate its effectiveness, an integrated TFG WLD-SAW model is proposed for green supplier selection, where Supplier No.2 with ̂= 3.3202 is selected as the best green supplier. Comparative analysis using the Zakeri-Konstantas weighted rankings similarity measure shows that TFG WLD achieves similar results to fuzzy and grey WLD methods in solving the green supplier selection problem.

Introducing Alternatives Ranking with Elected Nominee (Arwen) Method: A Case Study of Supplier Selection

Technological and Economic Development of Economy

Supply chain management (SCM) has gradually evolved beyond the straightforward logic of benefits ... more Supply chain management (SCM) has gradually evolved beyond the straightforward logic of benefits and economic viewpoints. Supplier selection and performance evaluation are the crucial strategic components of any SCM system with a substantial economic impact and risk reduction. Several conflicting factors make supplier selection a challenging multi-criteria decision-making problem. This paper introduces a method called alternative ranking with the elected nominee (ARWEN) to select suppliers in Iran’s dairy product chain store. The primary principle of ARWEN is to choose the best alternative based on the lowest change rate rather than the elected nominee. Four extensions of the ARWEN method are proposed depending upon the nature and level of information available to the decision-makers. A fifth extended version termed E-ARWEN is also recommended to consider the negative form of the elected nominee. Two novel statistical tools, the ranking performance index and the Zakeri-Konstantas di...

A decision analysis model for material selection using simple ranking process

Scientific Reports

A large number of materials and various criteria fashion material selection problems as complex m... more A large number of materials and various criteria fashion material selection problems as complex multi-criteria decision-making (MCDM) problems. This paper proposes a new decision-making method called the simple ranking process (SRP) to solve complex material selection problems. The accuracy of the criteria weights has a direct impact on the outcomes of the new method. In contrast to current MCDM methods, the normalization step has been eliminated from the SRP method as a potential source of producing incorrect results. The application of the method is appropriate for situations with high levels of complexity in material selection because it only considers the ranks of alternatives in each criterion. The first scenario of vital-immaterial mediocre method (VIMM) is used as a tool to derive criteria weights based on expert assessment. The result of SRP is compared with a number of MCDM methods. In order to evaluate the findings of analytical comparison, a novel statistical measure know...

The Rate-Weight Connected Vectors Processor (RWCVP): A Method for Dealing with Uncertainty in MCDM Problems

2023 15th International Conference on Computer and Automation Engineering (ICCAE)

Handbook of Formal Optimization

Handbook of Formal Optimization

Mutriss a New Method for Material Selection Problems Using Multiple-Triangles Scenarios

SSRN Electronic Journal

Solving Decision-Making Problems Using a Measure for Information Values Connected to the Equilibrium Points (IVEP) MCDM Method and Zakeri–Konstantas Performance Correlation Coefficient

Information

In this paper, a new multicriteria decision-making (MCDM) method, called a measure for informatio... more In this paper, a new multicriteria decision-making (MCDM) method, called a measure for information values connected to the equilibrium points (IVEP) method, and a new statistical measure for measuring the similarities of performances of MCDM algorithm outputs in a comparison process, called the Zakeri–Konstantas performance correlation coefficient, are introduced. The IVEP method uses Shannon’s entropy as the primary tool to measure the information embedded in the decision matrix in order to evaluate the decision’s options/alternatives for complex decision-making problems with a large number of criteria and alternatives. The second concept that drives the IVEP method is the equilibrium points, which signify the points in a vector space where scores for the decision’s options/alternatives are equilibrated. Instead of using linear functions to compute similarities between the data sets generated by the MCDM algorithms by the calculation of the distance using different methods, the Zak...

A Supplier Selection Model Using Alternative Ranking Process by Alternatives’ Stability Scores and the Grey Equilibrium Product

Processes

Supply chain management begins with supplier evaluation and selection. The supplier selection dea... more Supply chain management begins with supplier evaluation and selection. The supplier selection deals with various criteria with different contexts which makes it a complex multi-criteria decision-making (MCDM) method. In this paper, a novel MCDM method, called the alternative ranking process by alternatives’ stability scores (ARPASS), is proposed to solve supplier selection problems. ARPASS considers each alternative as a system that is constructed on integrated components. To perform properly, a system requires high integrity and stability. ARPASS utilizes the stability of alternatives as an effective element for ranking the alternatives. The ARPASS is developed in two forms, ARPASS and ARPASS*. The new method utilizes standard deviations and Shannon’s entropy to compute the alternatives’ stabilities. In this paper, in addition to the new MCDM methods, a new method called the grey equilibrium product (GEP) is introduced to convert grey linguistic variables into crisp values, using d...

The Grey Ten-Element Analysis Method: A Novel Strategic Analysis Tool

Mathematics, 2022

In this paper, a new strategic analysis method is introduced, called the ten-element analysis (TE... more In this paper, a new strategic analysis method is introduced, called the ten-element analysis (TEA) method to determine the firm’s strategic position in the market. The new method is grounded on the computation of the reflections of the external factors on the firm’s internal factors through the changes of the values of the internal factors throughout the time when a lack of complete information regarding the environmental factors exists. The TEA method takes ten effective key elements of the firm into account and investigates their changes through a maximum of nine periods and a minimum of two periods. To conduct the model, the paper is mainly focused on four main rubrics, including the detection of the reflection of the firm’s environmental factors on the internal factors, deriving the strategic position of the firm from the reflections, the capability of the existing strategic models in determining the strategic position from the reflections in presence of uncertainty and incompl...

Ranking based on optimal points and win-loss-draw multi-criteria decision-making with application to supplier evaluation problem

Expert Systems with Applications, 2022

The vital-immaterial-mediocre multi-criteria decision-making method

Kybernetes, 2021

PurposeThis paper proposes a new multi-criteria decision-making method, called the vital-immateri... more PurposeThis paper proposes a new multi-criteria decision-making method, called the vital-immaterial-mediocre method (VIMM), to determine the weight of multiple conflicting and subjective criteria in a decision-making problem.Design/methodology/approachThe novel method utilizes pairwise comparisons, vector-based procedures and a scoring approach to determine weights of criteria. The VIMM compares alternatives by the three crucial components, namely the vital, immaterial and mediocre criteria. The vital criterion has the largest effect on the final results, followed by the mediocre criterion and then the immaterial criterion, which is the least impactful on the prioritization of alternatives. VIMM is developed in two forms where the first scenario is designed to solve one-goal decision-making problems, while the second scenario embraces multiple goals.FindingsTo validate the method’s performance and applicability, VIMM is applied to a problem of sustainable supplier selection. Compari...

The Orbital Systems: Theory Paradigm

International Journal of Applied Decision Sciences, 2021

A market selection approach for dairy companies

International Journal of Management and Decision Making, 2020

A Grey Approach for the Computation of Interactions Between Two Groups of Irrelevant Variables of Decision Matrices

Multiple Criteria Decision Making, 2022

Selection and Prioritization of The Best Strategies Based on Porter’s Generic Strategies .Focused on Waste Paper Recycling Companies in Domestic Market

Recently in Iran, One of the most successful businesses is the waste recycling. This business has... more Recently in Iran, One of the most successful businesses is the waste recycling. This business has opened its way as an old and a new business or industry form in domestic production chain. Old and new because of many different products that have recycled .Today many companies are producing and using recycles wastes and waste products as their industries raw materials. Cellulose wastes are widely used in the industries which use in paper mills for recycled paper products. By following of the growing industry and the untapped markets and the high volume of trade for industries, the wastes recycling companies need to choose the best strategies to obtain more shape of domestic markets or keep their shape. This paper aims to present a formulated selection of the best strategies due to the strengths, opportunities, limitations and threats of this special industry and market by analysis of a sample of the industry SWOT matrix and select them by FAHP. In this paper, the Generic strategies a...

The vital-immaterial-mediocre multi-criteria decision-making method

Kybernetes

PurposeThis paper proposes a new multi-criteria decision-making method, called the vital-immateri... more PurposeThis paper proposes a new multi-criteria decision-making method, called the vital-immaterial-mediocre method (VIMM), to determine the weight of multiple conflicting and subjective criteria in a decision-making problem.Design/methodology/approachThe novel method utilizes pairwise comparisons, vector-based procedures and a scoring approach to determine weights of criteria. The VIMM compares alternatives by the three crucial components, namely the vital, immaterial and mediocre criteria. The vital criterion has the largest effect on the final results, followed by the mediocre criterion and then the immaterial criterion, which is the least impactful on the prioritization of alternatives. VIMM is developed in two forms where the first scenario is designed to solve one-goal decision-making problems, while the second scenario embraces multiple goals.FindingsTo validate the method’s performance and applicability, VIMM is applied to a problem of sustainable supplier selection. Compari...

The orbital systems theory

International Journal of Applied Decision Sciences

In this paper, a new theory is introduced called orbital systems theory to handle the uncertainty... more In this paper, a new theory is introduced called orbital systems theory to handle the uncertainty of the natural phenomena, the complicated real-world problems, and the human's decision-making process which naturally creates the inconstancy and uncertainty in each process it involves. The philosophy of the new theory is established based on this hypothesis that every component of the universe is a box that carries the information and each one is constructed by the particular information concepts that move along specific orbits. The orbital system is an integral part of the new theory. As a restricted numeric system, its core is the concept of reality. An orbital system is developed based on five numerical spectra surrounded by four parallel dimensions of reality and certain reality. With considering 'time' as an element, each dimension adds entropy to the system, and increases/decreases the level of uncertainty.

Dairy market selection approach using MCDM methods: a case of Iranian dairy market

International Journal of Management and Decision Making

A Proposed Framework for Selection and Prioritization of the Best Strategies: A Hybrid SWOT Analysis, Fuzzy PROMETHEE II and Porter's Generic Strategies

Research Journal of Environmental and Earth Sciences