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Title: A slippery genetic algorithm-based process mining system for achieving better quality assurance in the garment industry
Authors: Lee, CKH
Choy, KL 
Lam, CHY
Keywords: Biological slippage
Fuzzy association rule mining
Garment industry
Genetic algorithm
Quality assurance
Issue Date: 2016
Publisher: Pergamon Press
Source: Expert systems with applications, 2016, v. 46, p. 236-248 How to cite?
Journal: Expert systems with applications 
Abstract: Due to the error-prone nature of garment manufacturing operations, it is challenging to guarantee the quality of garments. Previous research has been done to apply fuzzy association rule mining to determine process settings for improving the garment quality. The relationship between process parameters and the finished quality is represented in terms of rules. This paper enhances the application by encoding the rules into variable-length chromosomes for optimization with the use of a novel genetic algorithm (GA), namely the slippery genetic algorithm (sGA). Inspired by the biological slippage phenomenon in DNA replication, sGA allows changes to the chromosome lengths by insertion and deletion. During rule optimization, different parameters can be inserted to or removed from a rule, increasing the diversity of the solutions. In this paper, a slippery genetic algorithm-based process mining system (sGAPMS) is developed to optimize fuzzy rules with the aim of facilitating a comprehensive quality assurance scheme in the garment industry. The significance of this paper includes the development of a novel variable-length GA mechanism and the hybridization of fuzzy association rule mining and variable-length GAs. Though the capability of conventional GA in rule optimization has been proven, the diversity in the population is inherently limited by the fixed chromosome length. Motivated by this phenomenon, the sGA suggested in this paper allows various parameters to be considered in a rule, improving the diversity of the solutions. A case study is conducted in a garment manufacturing company to evaluate the sGAPMS. The results illustrate that better quality assurance can be achieved after rule optimization.
ISSN: 0957-4174
EISSN: 1873-6793
DOI: 10.1016/j.eswa.2015.10.035
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