Article
Computer Science, Artificial Intelligence
Antonio Francisco Roldan Lopez de Hierro, Humberto Bustince, Maria del Mar Rueda, Concepcion Roldan, Laura De Miguel, Carlos Guerra
Summary: In this paper, a fuzzy dispersion measure associated with a finite set of data given by fuzzy numbers is introduced based on the analysis of the most widely used dispersion measure in the real context. This measure is implemented as a fuzzy number, so no information loss is caused by defuzzification. The proposed concept satisfies the usual properties in a genuinely fuzzy sense and removes limitations in terms of geometric shape or analytical properties, allowing negative values in its support. The new notion is a way of fusing information in a fuzzy dataset to make decisions based on dispersion.
INFORMATION FUSION
(2023)
Article
Computer Science, Theory & Methods
Estevao Esmi, Vinicius Francisco Wasques, Laecio Carvalho de Barros
Summary: This article introduces a method for calculating the sum and difference of two interactive fuzzy numbers using the sup-J extension principle. The proposed addition and subtraction produce fuzzy numbers with smaller width and norm than other methods. These operations are characterized by alpha-cuts.
FUZZY SETS AND SYSTEMS
(2021)
Article
Mathematics
Saeid Jafarzadeh Ghoushchi, Elnaz Osgooei, Gholamreza Haseli, Hana Tomaskova
Summary: New methods for solving fully fuzzy linear programming (FFLP) problems have been recommended recently. This study proposes a new approach utilizing triangular fuzzy numbers for fuzzy decision parameters and variables to tackle FFLP problems. By incorporating alpha-cut theory and modified triangular fuzzy numbers, the strategy aims to optimize decision variables and the objective function to obtain the optimal fully fuzzy solution for real-world problems. Multiple numerical examples are solved to demonstrate the effectiveness of this method.
Article
Computer Science, Artificial Intelligence
Yin-Fang Ye, Deng-Feng Li
Summary: This article develops a direct and simplified approach for computing triangular fuzzy Banzhaf values for a special class of cooperative games. By combining with the beta-cut sets of coalitions' triangular fuzzy values, a series of interval-valued cooperative games associated with the triangular fuzzy cooperative games are obtained.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2021)
Article
Computer Science, Artificial Intelligence
Jianping Fan, Mingxuan Chai, Meiqin Wu
Summary: With the rapid development of the new energy vehicle industry, competition in the industry has intensified. Many businesses are now seeking cooperation with their supply chain members in order to create innovative products. This study focuses on the cooperation decisions between members of the new energy vehicle supply chain, specifically between a battery manufacturer and vehicle producer. It examines the benefits of the two members and analyzes the impact of government incentives on their cooperation.
JOURNAL OF INTELLIGENT & FUZZY SYSTEMS
(2023)
Article
Computer Science, Information Systems
Jiuying Dong, Shuping Wan, Shyi-Ming Chen
Summary: This paper introduces a new fuzzy best-worst method based on triangular fuzzy numbers for multi-criteria decision-making. Mathematical programming models are constructed to derive optimal fuzzy weights of criteria and four linear programming models are proposed for different types of decision makers. The concept of fuzzy consistency index and ratio are also proposed and validated through application examples.
INFORMATION SCIENCES
(2021)
Article
Computer Science, Artificial Intelligence
Velu Lakshmana Gomathi Nayagam, Jagadeeswari Murugan
Summary: This paper introduces the weighted triangular approximation process of a new type of intuitionistic fuzzy number with bounded membership function and bounded nonmembership function, and discusses some useful properties of the approximation on intuitionistic fuzzy numbers.
Article
Computer Science, Artificial Intelligence
Irina Georgescu
Summary: This paper studies a possibilistic multi-item risk neutral inventory problem where the components of the demand vector are fuzzy numbers. The total profit is defined and the optimization problem is formulated using operations with fuzzy numbers and the possibilistic expected value associated with a fuzzy number. A calculation formula for the solution of the optimization problem is proven, and calculation formulas for the trapezoidal and triangular fuzzy number cases are derived. The theoretical results are exemplified using numerical data.
Article
Computer Science, Information Systems
Shervin Zakeri, Dimitri Konstantas, Reidar Brumer Bratvold, Dragan Pamucar
Summary: This paper presents the Triangular Fuzzy-Grey (TFG) system as an innovative approach for multi-criteria decision-making (MCDM) problems. The TFG system integrates grey systems and fuzzy numbers to effectively handle uncertainty in supplier selection. An integrated TFG WLD-SAW model is proposed for green supplier selection, and the results show that it achieves similar outcomes to fuzzy and grey WLD methods.
Article
Operations Research & Management Science
Mukunda Choudhury, Sujit Kumar De, Gour Chandra Mahata
Summary: The proposed study presents a sustainable supply chain model with a single-vendor and a single-buyer, taking into account the negative impacts of environmental pollution during production. A pollution measure estimation function is developed to quantify the pollution caused by production. The model considers the deterioration rate in the supply chain, which increases over time and depends on product expiration dates. The demand for deteriorating items at the buyer's end is assumed to be a dense fuzzy number, accounting for learning effects. The model defines profit functions for the vendor, buyer, and entire supply chain and is solved using classical methods to determine optimal policies. A fuzzy objective function is employed and defuzzified using an extended ranking procedure. A comparative study is conducted to validate the model, analyzing numerical examples under centralized and decentralized policies in both crisp and dense fuzzy environments. Graphical illustrations and sensitivity analysis are provided for global justifications.
RAIRO-OPERATIONS RESEARCH
(2022)
Article
Mathematics, Applied
G. Hesamian, M. G. Akbari
Summary: This study assessed a new nonlinear quantile regression modeling method for cases where response variables are reported by triangular fuzzy numbers and predictors are exact data. The proposed fuzzy empirical kernel-based quantile regression method uses a hybrid algorithm to evaluate the unknown bandwidth and quantile level. It also introduces a sign distance measure for triangular fuzzy numbers and compares it with a well-known sign distance. The proposed method outperforms existing fuzzy quantile regression models and other fuzzy regression methods in terms of goodness-of-fit measures.
COMPUTATIONAL & APPLIED MATHEMATICS
(2022)
Article
Computer Science, Information Systems
Qi Yue, Zhibin Deng, Bin Hu, Yuan Tao, Wenchang Zou
Summary: This paper proves some existing theories about triangular intuitionistic fuzzy numbers (TIFNs) and triangular intuitionistic fuzzy sets (TIFSs). It also provides some novel theorems and related proofs on TIFNs and TIFSs. Moreover, the presented theories are applied in the field of two-sided matching decision-making. A numerical case is adopted for demonstrating the effectiveness of the proposed theories and method. This work will effectively complement the theories of TIFNs and TIFSs, and popularize their application scope.
Article
Mathematics, Applied
Naveed Khan, Naveed Yaqoob, Mudassir Shams, Yae Ulrich Gaba, Muhammad Riaz
Summary: This paper introduces the new concept of triangular linear Diophantine fuzzy numbers (TLDFNs) in a generic way, studying arithmetic operations, ranking methods, and providing solutions for linear and quadratic equations involving TLDFNs through examples.
JOURNAL OF FUNCTION SPACES
(2021)
Article
Automation & Control Systems
Fang Liu, Cai-Xia Huang, Ya-Ru Chen
Summary: The paper proposes a novel ranking method for generalized fuzzy numbers based on possibility theory, considering the combined effects of possibilistic mean and variance/standard deviation. The method's axiomatic properties are verified through numerical examples, showing its ability to overcome shortcomings of existing methods.
INTERNATIONAL JOURNAL OF FUZZY SYSTEMS
(2021)
Article
Mathematics, Applied
Jun Hu, Jie Wu, Mengzhe Wang
Summary: This study proposes a decision-making method based on interval Pythagorean triangular fuzzy numbers, which combines the advantages of interval Pythagorean fuzzy numbers and triangular fuzzy numbers to handle fuzzy information more accurately, thus improving the scientificity and effectiveness of decision-making.
Article
Economics
Behnam Vahdani, D. Veysmoradi, S. M. Mousavi, M. Amiri
Summary: This paper presents a bi-objective optimization model for planning a humanitarian distributed logistics network, addressing the important issues of relief distribution and victim evacuation. The proposed model and solution approach have been proven to be effective and applicable in a real case study.
SOCIO-ECONOMIC PLANNING SCIENCES
(2022)
Article
Management
S. M. Nabavi, Behnam Vahdani, B. Afshar Nadjafi, M. A. Adibi
Summary: This study introduces a new perspective in disaster management by synchronizing multiple vehicles for victim evacuation and debris removal. A novel bi-objective mixed-integer programming model is presented, and a two-stage data-driven approach is used to predict reliable travel and service times. The proposed framework improves planning and routing by providing meaningful insights into the influence of significant parameters.
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2022)
Article
Business
Ehsan Khanmohammadi, Hossein Safari, Mostafa Zandieh, Behnam Malmir, Erfan Babaee Tirkolaee
Summary: This article introduces an integrated framework using balanced scorecard, system dynamics simulation, case-based reasoning method, and adaptive neuro-fuzzy inference system model to help strategy managers determine an organization's strategy. A real-world case study was conducted to validate the methodology's applicability and yielded appropriate strategies in line with managers' objectives.
IEEE TRANSACTIONS ON ENGINEERING MANAGEMENT
(2022)
Article
Engineering, Industrial
Hamed Jafar-Zanjani, Mostafa Zandieh, Mani Sharifi
Summary: The study discusses the importance of organizations shifting from centralized to decentralized structures and developing multi-factor production networks in the global business market. By proposing a bi-objective optimization model and utilizing robust programming and heuristic methods for maintenance planning and scheduling, as well as resilience strategies for network disruptions, the uncertainty of input parameters is effectively addressed.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2022)
Article
Environmental Sciences
Ali Sibevei, Adel Azar, Mostafa Zandieh, Seyed Mohammad Khalili, Maziar Yazdani
Summary: The study found that by using the newly proposed approach, supply chain risks could be assessed more effectively, especially when the number of risks is large. Resolving the root risks of the blood supply chain frequently requires management skills. This paper proposes a new systemic approach that offers a fresh perspective on supply chain risk management.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Engineering, Industrial
Mohammad Ali Nikouei, Mostafa Zandieh, Maghsoud Amiri
Summary: This paper incorporates preventive maintenance activities into the two-stage assembly flow-shop scheduling problem and proposes three maintenance policies. Two hybrid optimization methods are used to find proper job sequencing, with variable neighborhood search with simulated annealing algorithm showing superior solution quality and computational time.
JOURNAL OF INDUSTRIAL AND PRODUCTION ENGINEERING
(2022)
Article
Management
Mohsen Abdoli, Mostafa Zandieh, Sajjad Shokouhyar
Summary: This study determines the optimal queuing system capacity by analyzing the properties of the queuing system and appointment window, aiming to minimize the total costs. The findings can guide the management decisions of both public and private healthcare centers.
JOURNAL OF MODELLING IN MANAGEMENT
(2023)
Article
Engineering, Industrial
Vahid Kayvanfar, M. Zandieh, Mehrdad Arashpour
Summary: This research investigates the economic lot scheduling problem and proposes a hybrid algorithm that outperforms other algorithms in terms of solution quality and diversity.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE-OPERATIONS & LOGISTICS
(2022)
Article
Mathematics, Interdisciplinary Applications
Babak Hassangaviar, Bahman Naderi, Farhad Etebari, Behnam Vahdani
Summary: Supply chain management is a crucial indicator for companies to survive and meet customer needs in the competitive global market. This study presents a multiobjective, multifacility, closed-loop supply chain model considering green supply chain aspects. The model is solved using the Nondominated Sorting Genetic Algorithms (NSGA-II), and the efficiency of the model is evaluated through results and graphs.
DISCRETE DYNAMICS IN NATURE AND SOCIETY
(2022)
Article
Economics
Mahnaz Sohrabi, Mostafa Zandieh, Mohammad Shokouhifar
Summary: This study examines the challenges of healthcare systems in achieving sustainable inventory management of blood products. The study aims to promote social equity in healthcare provision, optimize cost management, and minimize environmental pollution. A demand-driven multi-objective inventory model is proposed, utilizing hybrid policies in an uncertain environment. The model considers different types of demands, applies a robust fuzzy stochastic programming approach, and implements a combined metaheuristic technique for solution finding. The results demonstrate the superior performance of the proposed model in minimizing costs, reducing shortages and wastage, and addressing health equity and emergencies.
SOCIO-ECONOMIC PLANNING SCIENCES
(2023)
Article
Computer Science, Information Systems
Amin Rahimi, Seyed Mojtaba Hejazi, Mostafa Zandieh, Mirpouya Mirmozaffari
Summary: This paper proposes a surgical case scheduling problem that assigns n surgeries to m identical operating rooms or machines. Since optimization problems in operating rooms are NP-hard, mathematical and metaheuristic methods are used. The ordering of surgical operations in each room is a crucial part of sequencing and scheduling problems. The study introduces a no-wait open-shop surgical case scheduling problem with multi-transportation times and develops a mixed-integer linear program (MILP) to solve small-sized instances. Moreover, a hybrid simulated annealing (SA) algorithm is suggested for solving large-sized problems in an acceptable computational time.
APPLIED SYSTEM INNOVATION
(2023)
Article
Computer Science, Interdisciplinary Applications
A. Mojaver Tabrizi, Behnam Vahdani, F. Etebari, M. Amiri
Summary: This article discusses the importance of online order batching and picker routing in the context of online shopping. The study proposes a three-stage model to classify products, assign carriers and storage locations, and optimize picker routing to improve efficiency and reduce costs in the system.
COMPUTERS & INDUSTRIAL ENGINEERING
(2023)
Article
Engineering, Industrial
Elmira Gheisariha, Farhad Etebari, Behnam Vahdani, Reza Tavakkoli-Moghaddam
Summary: This study proposes a milk collection network that considers different milk qualities and solves a scheduling and routing problem with multiple multi-compartment heterogeneous vehicles. The blending process in multi-compartment vehicles is also considered to increase total profit. A novel hybrid meta-heuristic algorithm is proposed to solve the model, and a new heuristic algorithm for the blending process is developed. A case study and extensive numerical experiments demonstrate the applicability and validity of the proposed model and solution approach. The results show that the blending process and multi-compartment vehicles have a significant impact on the system's profit.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE-OPERATIONS & LOGISTICS
(2023)
Article
Computer Science, Artificial Intelligence
Behnam Vahdani
Summary: This study offers an integrated, flexible action plan for managing debris clearance and relief items distribution in disaster response. A new bi-objective mathematical model is proposed to minimize total cost and operation time. A data-driven methodology is introduced to estimate reliable travel time and tackle uncertainty. The results show that considering flexibility in network design and delivery date reduces total costs and operation time by 7% and 6% respectively.
EXPERT SYSTEMS WITH APPLICATIONS
(2023)
Article
Management
Behnam Vahdani, Mehrdad Mohammadi, Simon Thevenin, Patrick Meyer, Alexandre Dolgui
Summary: This paper addresses a multi-period production-inventory-sharing problem to overcome the challenges caused by the rapid spread of the COVID-19 virus. By introducing a new formulation and utilizing a bespoke epidemiological model and control policy, as well as an accelerated Benders decomposition-based algorithm, the authors successfully solve large-sized test problems efficiently. The proposed sharing mechanism significantly reduces the total cost of the system and unmet demand.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2023)