Fuzzy Sets and Systems - Fuzzy Numbers
Genetic algorithms + data structures = evolution programs (3rd ed.)
Genetic algorithms + data structures = evolution programs (3rd ed.)
Chance constrained programming with fuzzy parameters
Fuzzy Sets and Systems
The fuzzy Riemann integral and its numerical integration
Fuzzy Sets and Systems
Fuzzy Sets and Systems
Towards the theory of fuzzy differential equations
Fuzzy Sets and Systems
Nearest interval approximation of a fuzzy number
Fuzzy Sets and Systems - Fuzzy intervals
Comparation between some approaches to solve fuzzy differential equations
Fuzzy Sets and Systems
Computers and Industrial Engineering
Fuzzy Preference Ordering of Interval Numbers in Decision Problems
Fuzzy Preference Ordering of Interval Numbers in Decision Problems
Computers and Industrial Engineering
Fuzzy inventory model with two warehouses under possibility constraints
Fuzzy Sets and Systems
Computers and Industrial Engineering
Inventory model for seasonal demand with option to change the market
Computers and Industrial Engineering
Mathematical and Computer Modelling: An International Journal
Computers & Mathematics with Applications
Computers and Industrial Engineering
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In this paper, a production inventory model, specially for a newly launched product, is developed incorporating fuzzy production rate in an imperfect production process. Produced defective units are repaired and are sold as fresh units. It is assumed that demand coefficients and lifetime of the product are also fuzzy in nature. To boost the demand, manufacturer offers a fixed price discount period at the beginning of each cycle. Demand also depends on unit selling price. As production rate and demand are fuzzy, the model is formulated using fuzzy differential equation and the corresponding inventory costs and components are calculated using fuzzy Riemann-integration. @a-cut of total profit from the planning horizon is obtained. A modified Genetic Algorithm (GA) with varying population size is used to optimize the profit function. Fuzzy preference ordering (FPO) on intervals is used to compare the intervals in determining fitness of a solution. This algorithm is named as Interval Compared Genetic Algorithm (ICGA). The present model is also solved using real coded GA (RCGA) and Multi-objective GA (MOGA). Another approach of interval comparison-order relations of intervals (ORI) for maximization problems is also used with all the above heuristics to solve the model and results are compared with those are obtained using FPO on intervals. Numerical examples are used to illustrate the model as well as to compare the efficiency of different approaches for solving the model.