An Improved Local Search Genetic Algorithm with Multi-crossover for Job Shop Scheduling Problem

Viana, Monique Simplicio; Morandin, Orides; Contreras, Rodrigo Colnago

doi:10.1007/978-3-030-61401-0_43

Cited by 6 publications

(5 citation statements)

References 23 publications

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“…In future developments, we intend to modify our material in order to make it effective in detecting values in financial time series and not just in detecting monotonicity. Furthermore, more elaborate metaheuristics, such as those based on massive local search [ 32 , 33 , 34 , 35 , 36 , 37 ], should be considered in feature selection.…”

Section: Discussionmentioning

confidence: 99%

Genetic Algorithm for Feature Selection Applied to Financial Time Series Monotonicity Prediction: Experimental Cases in Cryptocurrencies and Brazilian Assets

Contreras,

Xavier da Silva,

Xavier da Silva

et al. 2024

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Since financial assets on stock exchanges were created, investors have sought to predict their future values. Currently, cryptocurrencies are also seen as assets. Machine learning is increasingly adopted to assist and automate investments. The main objective of this paper is to make daily predictions about the movement direction of financial time series through classification models, financial time series preprocessing methods, and feature selection with genetic algorithms. The target time series are Bitcoin, Ibovespa, and Vale. The methodology of this paper includes the following steps: collecting time series of financial assets; data preprocessing; feature selection with genetic algorithms; and the training and testing of machine learning models. The results were obtained by evaluating the models with the area under the ROC curve metric. For the best prediction models for Bitcoin, Ibovespa, and Vale, values of 0.61, 0.62, and 0.58 were obtained, respectively. In conclusion, the feature selection allowed the improvement of performance in most models, and the input series in the form of percentage variation obtained a good performance, although it was composed of fewer attributes in relation to the other sets tested.

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Section: Discussionmentioning

confidence: 99%

Genetic Algorithm for Feature Selection Applied to Financial Time Series Monotonicity Prediction: Experimental Cases in Cryptocurrencies and Brazilian Assets

Contreras,

Xavier da Silva,

Xavier da Silva

et al. 2024

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“…In the works of Viana et al [13] and Viana et al [14], a new GA approach with improved local search and multi-crossover techniques (mXLSGA) was proposed. Three operators specialized in local search were proposed: one built into the mutation operator; one with massive behavior; and another with multi-crossover routines.…”

Section: Related Workmentioning

confidence: 99%

“…This encoding determines in the chromosome the operation priority with respect to the machine allocation. For example, as in [14], let us assume c = (2, 1, 2, 2, 1, 1) as a feasible solution in a JSSP instance with dimension 2 × 3 (N = 2 and M = 3). Thus, according to the operations defined in c, the following actions must be conducted in parallel or if the previous action has already been completed:…”

Section: Genetic Representationmentioning

confidence: 99%

“…From this need, algorithms that present approximate results in a feasible computational time were developed and applied to JSSP. The main methods used are those composed of metaheuristics [12], mainly by the Evolutionary Algorithm (EA) known as Genetic Algorithm (GA) [13][14][15][16][17]. Even so, the JSSP consists of a class of problems that remain open [18] and with many instances still unsolved in the well-known benchmarks of the area [19].…”

Section: Introductionmentioning

confidence: 99%

“…Then, according to [13][14][15], the MKS can be defined as the total time that all jobs take to be processed according to a given operation sequence, as presented in Equation (1).…”

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confidence: 99%

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A New Frequency Analysis Operator for Population Improvement in Genetic Algorithms to Solve the Job Shop Scheduling Problem

Viana

Contreras

Morandin

2022

Sensors

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Job Shop Scheduling is currently one of the most addressed planning and scheduling optimization problems in the field. Due to its complexity, as it belongs to the NP-Hard class of problems, meta-heuristics are one of the most commonly used approaches in its resolution, with Genetic Algorithms being one of the most effective methods in this category. However, it is well known that this meta-heuristic is affected by phenomena that worsen the quality of its population, such as premature convergence and population concentration in regions of local optima. To circumvent these difficulties, we propose, in this work, the use of a guidance operator responsible for modifying ill-adapted individuals using genetic material from well-adapted individuals. We also propose, in this paper, a new method of determining the genetic quality of individuals using genetic frequency analysis. Our method is evaluated over a wide range of modern GAs and considers two case studies defined by well-established JSSP benchmarks in the literature. The results show that the use of the proposed operator assists in managing individuals with poor fitness values, which improves the population quality of the algorithms and, consequently, leads to obtaining better results in the solution of JSSP instances. Finally, the use of the proposed operator in the most elaborate GA-like method in the literature was able to reduce its mean relative error from 1.395% to 0.755%, representing an improvement of 45.88%.

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A New Genetic Improvement Operator Based on Frequency Analysis for Genetic Algorithms Applied to Job Shop Scheduling Problem

Viana

Contreras

Morandin

2021

Artificial Intelligence and Soft Computing

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An Improved Local Search Genetic Algorithm with Multi-crossover for Job Shop Scheduling Problem

Cited by 6 publications

References 23 publications

Genetic Algorithm for Feature Selection Applied to Financial Time Series Monotonicity Prediction: Experimental Cases in Cryptocurrencies and Brazilian Assets

Genetic Algorithm for Feature Selection Applied to Financial Time Series Monotonicity Prediction: Experimental Cases in Cryptocurrencies and Brazilian Assets

A New Frequency Analysis Operator for Population Improvement in Genetic Algorithms to Solve the Job Shop Scheduling Problem

A New Genetic Improvement Operator Based on Frequency Analysis for Genetic Algorithms Applied to Job Shop Scheduling Problem

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