Optimization in science and engineering
Ali Sheykhani; Farshad Hosseinzadeh Lotfi; Arash Maghsoudi
Abstract
Worldwide, the rate of preterm births is increasing, so there will be significant health, development and economic problems. Premature birth is one of the leading causes of death and a significant cause for the loss of human potential among survivors around the world. Complications of preterm birth are ...
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Worldwide, the rate of preterm births is increasing, so there will be significant health, development and economic problems. Premature birth is one of the leading causes of death and a significant cause for the loss of human potential among survivors around the world. Complications of preterm birth are the single largest direct cause of neonatal death. Current methods for early detection of such labor are insufficient. One promising technique, recognized in monitoring uterine activity, is the use of advanced device learning algorithms and electrohistrography (EHG) induction. In this article, a learning machine is designed to diagnose different types of deliveries. Using deep learning algorithms, electrohistrographic signals have been used to detect preterm birth. The results were obtained using a data set that included 262 cases for women who had a preterm delivery and 38 cases for women who had a preterm delivery. Using the "cross" technique, 4 types of data sets were implemented in two ways, with training and without training. The results obtained in this study showed that the error on this set of data was one percent.
Decision based on Neural Networks/ Deep Learning
Aminollah Zarghami; Meysam Doaei; Abtin Boostani
Abstract
Purpose: Delisted companies, despite their importance in the economic and social issues of society, is less considered in the financial literature. This issue is important because for each country, one of the criteria for economic measurement is the size of the capital market. Therefore, the delisted ...
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Purpose: Delisted companies, despite their importance in the economic and social issues of society, is less considered in the financial literature. This issue is important because for each country, one of the criteria for economic measurement is the size of the capital market. Therefore, the delisted companies not only destroys the company's reputation, its stock price and the market for the sale of its shares, but also affects the growth of the market and the economy of each country. The present study seeks to review the financial statements and audit reports of active companies and compare it with delisted companies to design a model for forecasting delisted companies in the Tehran Stock Exchange with the help of artificial intelligence modeling techniques.Methodology: In this study, which was conducted on companies of the Tehran Stock Exchange, data related to three years before the delisting of 73 companies removed from the stock exchange from 2003 to 2019 in the first group and data of 148 active companies that are continuously. They were present in the stock market in the second group and were selected by systematic elimination method. Then, with data mining techniques, which are among the most efficient and up-to-date models of artificial intelligence, and with the help of multi-layered perceptron neural network classifiers, decision tree, and Bayesian theory classifiers, stock delisted companies have been predicted.Findings: The findings show that the Bayesian classifier had the best performance and the multilayer perceptron neural network was in the second place and the decision tree classifier was in the third place.Originality/Value: Little research has been done in the field of predicting delisted companies from the Iran capital market. This study by filling this gap, suggests to researchers to use other classifiers, combine several classifiers together to better cover the errors of each, combine classifiers with each other and weigh in a way that is more accurate, add other variables influential in the dismissal of companies, including the ownership structure and shareholder composition can have other results.
Decisions in new businesses
seyed hesam vaghfi
Abstract
Financial distress analysis is an essential phenomenon for financiers, creditors and those who use financial data. Predicting the possibility of a company’s distress is an interesting issue and is beneficial for managers, investors and creditors. This study localizes a method to identify the distressed ...
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Financial distress analysis is an essential phenomenon for financiers, creditors and those who use financial data. Predicting the possibility of a company’s distress is an interesting issue and is beneficial for managers, investors and creditors. This study localizes a method to identify the distressed companies in three levels, using the data of 1488 company from 1390 to 1395 and finally the financial distress for the next year and two years later is predicted by means of macroeconomic and accounting variable in the capital market of Iran by means of Matlab 2017, using the artificial intelligence algorithm of Gaussian kernel backup vector machine and Chide rule-oriented algorithm. One of the innovations of this study about the localization of the distress model in Iran using the worldwide and Iranian model together is using macroeconomic and accounting variables and artificial intelligence methods in three levels. The results of this study show that the non-linear algorithm for vector machine supporting the Gaussian kernel has more ability to predict the distress of companies, compared to the Chide rule-oriented algorithm. Key words: Financial Bankruptcy, artificial intelligence, Macro-economic and Accounting variables.JEL: C53،A12،B26،G33،M41