firefly algorithm

The main goal of investing in the stock market is to get the highest return at the desired time. Successful trading in financial markets should be done close to key reversal points.In this research, we are trying to select the widely used technical rules by studying the previous researches and improving the decision parameters in the mentioned technical rules for each stock by using the firefly and gray wolf algorithm and converting contradictory signals issued from the optimized indicators to the unit. And finally, through the LSTM neural network, we will try to predict the entry and exit positions of the stock market.This research was conducted from 1390 to September 1401 on Tehran Stock Exchange companies. The proposed model has been able to correctly identify buy, sell and hold points for a future trading day for long-term investors with an error of about thirty-six percent.Keywords: Technical indicators, firefly algorithm, GWO and LSTM

The type of customer service during the warranty is crucial for each complex. The purpose of customer service will be to meet the satisfaction of customers. Many components can contribute to accomplish this goal. One of the most important components is financial components. Today's world is a world of wide developments in all dimensions. The majority of companies are, more than ever, aware that the delivery of after-sales service is very effective in the loyalty and repetition of customer purchases. The intense focus on the quality of service causes the product to be valuable in terms of customers and their loyalty. Therefore, in this study, designing a credit risk management model for the for the Saipa Yadak Company and its Representatives Network using financial components of after-sales service and meta-heuristic algorithms was discussed. The sample studied in this research is the representatives of Saipa Company.The results showed that using financial components including, service cost, performance, good accounting, the amount of collateral and the amount of after-sales service agents have an impact on optimal credit risk management. Also, firefly algorithm and bee colony algorithm have the ability to predict the optimal management of credit risk using financial components.

By anticipating financial turmoil, it is possible to take the necessary precautions before financial distress occurs by managers and investors. This study compares two algorithms for prediction of bankruptcy using Artificial Neural Network (ANN) and Neural network optimized metaheuristic Firefly Algorithm (FA). To run test, first initial values are set for the network weights and biases and then during the optimization process, a population of different weights and biases is generated by FA algorithm. The conversion function used in the output layer is linear and for the middle layer a non-linear sigmoid function is selected. To conduct this research, the data of 79 companies listed on TSE during 2012 to 2015 were collected and analyzed statistically by backpropagation neural network and FA algorithms. The results show that FA, compared to ANN predicted the companies’ bankruptcy much better. Also, FA Algorithm maintains a good correlation between bankrupt and non-bankrupt companies, just like real data.