• Management Science and Financial Engineering
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• 제15권2호
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• pp.101-118
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• 2009

In quantitative contexts, data mining is widely applied to the prediction of stock prices from financial time-series. However, few studies have examined the potential of data mining for shedding light on the qualitative problem-solving knowledge of experts who make stock price predictions. This paper presents a GA-based data mining approach to characterizing the qualitative knowledge of such experts, based on their observed predictions. This study is the first of its kind in the GA literature. The results indicate that this approach generates rules with higher accuracy and greater coverage than inductive learning methods or neural networks. They also indicate considerable agreement between the GA method and expert problem-solving approaches. Therefore, the proposed method offers a suitable tool for eliciting and representing expert decision rules, and thus constitutes an effective means of predicting the stock price index.

• 재무관리연구
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• 제25권3호
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• pp.131-153
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• 2008

본 연구에서는 최근 위험이 점증하고 있는 증권산업에 대한 위험지수를 산출함으로써 증권관련 유관기관에서 국가경제적인 차원에서 증권산업의 위험도를 모니터링하고 위기상황을 예방할 수 있는 대책을 마련할 수 있는 정교하고 포괄적인 재무계량방법론을 제시하고자 하였다. 방대한 자료와 정밀한 계량기법을 통하여 선정된 17개 지표들로부터 2002년 1사분기부터 2007년 2사분기까지 시산된 우리나라 증권산업의 위험지수에 의하면 우리나라의 증권시장에서 2002년 1사분기부터 2003년 1사분기까지, 그리고 2006년 1사분기부터 4사분기까지 위험도가 증가하였고 2003년 2사분기부터 2006년 1사분기까지 우리나라 증권산업의 위험도가 약 22% 감소하였다. 특히 2003년 4사분기와 2004년 1사분기 사이에 우리나라 증권산업의 위험도가 7.72% 감소하여 분기별로는 가장 큰 폭으로 위험도가 감소하였다. 한편 본 연구에서 시산한 한국증권산업의 위험지수는 경제이론에 근거하고 주가와 재무정보를 이용하여 향후 일정기간동안 상장기업의 부도확률을 예측하는 모형인 EDF 부도확률예측모형과도 유사한 결과를 제시하는 것으로 판명 되었다.

• 한방안이비인후피부과학회지
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• 제23권3호
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• pp.122-137
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• 2010

Objective : Atopic dermatitis (AD) in children may profoundly affect the quality of life (QOL), and also cause financial burden, to the families of those suffering from this ailment. The aim of our study was to examine the quality of life and the financial burden of atopic dermatitis in children and their families to evaluate this relationship with the degree of AD. Methods : 37 infant and child atopic dermatitis patients were included and evaluated using the SCORing of Atopic Dermatitis (SCORAD) Index and Eczema Area and Severity Index (EASI). Patients and carers were asked to fill in the questionnaires about their quality of life and financial costs during the past year. Data about sleep disturbance and pruritus were also obtained. Pearson's correlation was used for statistical analysis. Results : 1. The mean score of Children's Dermatology Life Quality Index (CDLQI) was $10.52{\pm}4.82$, Infants' Dermatologic Quality of Life (IDQOL) was $8.21{\pm}3.95$. 2. The mean score of Family Dermatology Life Quality Index (FDLQI) was $13.30{\pm}5.72$, Dermatitis Family Impact (DFI) was $12.5{\pm}4.98$. 3. By analyzing the questionnaire, the monthly average cost was determined to be 730,800 won for each patient : the direct cost was 283,500 won, and the indirect cost was 447,300 won. 4. By analyzing the correlation between the severity of AD and QOL, subjective SCORAD were significantly and positively correlated with QOL(IDQOL, FDLQI, DFI, CDLQI). 5. By analyzing the correlation between the severity of AD and any economic impact, EASI were significantly and positively correlated with the direct cost. Conclusion : The above results show that the QOL of the patients and carers is significantly related to their disease severity. Atopic dermatitis patients pay an average of 730,800 won a month, and the economic impact on the patients is significantly related to their disease severity. The CDLQI, IDQOL, FDLQI and DFImay potentially be of value to help in the appropriate management of AD and can be used as an added measurement in clinical trials involving AD management.

• The Journal of Asian Finance, Economics and Business
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• 제7권12호
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• pp.1185-1194
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• 2020

This study aims to test Voluntary Disclosure, Quality of Financial Reporting and Information Asymmetry as Moderation Variables. The Voluntary Disclosure variable is calculated using the Index Disclosure. This research uses quantitative methods and uses partial least square with EViews data analysis. The research sample consisted of 225 manufacturing companies listed on the Indonesian stock exchange for the period 2016-2018. The results of the study state that voluntary disclosure has a positive and significant effect on the quality of financial reporting through asymmetric information. The relationship between voluntary disclosure and asymmetric information has a negative effect on the quality of financial reporting, states that the disclosure of voluntary reports to companies can prevent information asymmetry, as well as the relationship of voluntary disclosure to information asymmetry states that companies that make voluntary disclosure will increase the interest of investors and other stakeholders. The quality of financial reporting states that if there is information asymmetry, the quality of financial reporting will also decline. The low value of relevance will affect the level of large or small information gaps between management and investors. The quality of financial reporting with increased relevance means that asymmetric information will have a negative impact on financial reporting.

• 한국신뢰성학회지:신뢰성응용연구
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• 제16권2호
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• pp.78-89
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• 2016

Purpose: In this paper, we investigate whether the endeavors for Six Sigma quality management by a firm have positive effects on its financial performance and the length of Six Sigma implemented period affects its financial status. We find a relationship between Six Sigma implemented period and several financial performance index using a smoothing spline function. Methods: A smoothing spline function is used in order to analyze the relationship between efforts for quality management and financial performance. Specifically, the return on assets, return on equity, sales cost and business fee are investigated as dependent variables and the efforts for quality management as independent variable. Results: As a result of the analysis, the indication is that companies that put effects into the Six Sigma quality management have a positive result in its financial status. In detail, the efforts for Six Sigma quality management have positive effects on total asset turnover ratio and Six Sigma implemented period on net income to net sales ratio. Additionally, companies with longer (shorter) period of Six Sigma program have more (less) improvement in its financial status. Conclusion: It can be concluded that the company's efforts for quality management positively influence financial performance.

• The Journal of Asian Finance, Economics and Business
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• 제9권6호
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• pp.45-52
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• 2022

This research has the purposes of analyzing and proving empirically, such as: To investigate the effect of good corporate governance (GCG) on financial performance at banks in Indonesia through the mediating role of corporate asset growth. Theoretically, the study's results were expected to enrich and complete the repertoire of understanding in the financial management area, specifically with those phenomena related to banking financial performance and factors which influenced it. The population of this research was a bank that had a Corporate Governance Perception Index (CGPI) rating from 2011 to 2020. The type of sampling used was saturated sampling; thus, the whole population is sample members. Current data analysis used SEM. GCG has a direct or indirect impact on banking financial performance, according to the findings of this study. Improved GCG results in increased public confidence, which is reflected in an increase in total assets, as well as improved banks' financial performance. As a result, it can be stated that corporate asset increase largely mitigated the impact of GCG on bank financial performance in Indonesia. Through this rapid growth from corporate assets, Bank can maximize the market expansion which is ultimately able to improve banking financial performance.

• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.601-611
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• 2021

There are many asset prices which are interlinked and have a bearing on the stock market index. Studies have shown that the interrelationship among these asset prices vary and are inconsistent. The ultimate aim of this study is to examine the dynamic relationship between gold price, oil price, exchange rate and stock index. Monthly time series data has been utilized by the researcher to examine the interrelationship between four variables. The relationship among stock exchange rate index, oil price and gold price have been undertaken using regression and granger causality test. The results indicate that the exchange rate and oil price have an indirect influence on NIFTY; whereas gold price had a direct impact on NIFTY. It is evident from the results that volatility in the price of gold is mainly dependent on the exchange rate and vice versa. All the variables affect NIFTY in some way or the other. However, gold has a direct and vital relationship. From the study findings, it can be concluded that macroeconomic variables like commodity prices and foreign exchange rate, gold and oil, have a strong relationship on the return on securities at the national stock exchange of India.

• 보건행정학회지
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• 제3권1호
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• pp.84-101
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• 1993

The current method of rate adjustment is based on the evaluation of the financial performance of hospitals. The method has the disadvantages such as too complicated, expensive process as well as low reliability due to small sample size. This study, therefore, develops a new model for the rate adjustment with the use of the composite index. In addition to that, it examines the validity of the model by comparing the result of the new method with that of the conventional method. The idea of the new model comes from the Medicare Economic Index(MEI) on which physician fees for the Medicare patients are adjusted periodically in the United States. Medical costs are classified into three groups : labor costs, materials and other expenses. Labor costs are subdivided into physicians and other personnels. Materials are subdivided into drugs and others. Other expenses are subdivided into 5 items. Macro economic indices are selected for each cost item in order to reflect the cost inflation during the specific period. Then the composite index which integrate all items according to the ration of each item in the total costs is calculated. The result from the application of empirical data to the new model is very similar to that of the current method. Furthermore, this method is very simple and also to easy to get social concensus. This model can be replaced the current method based on the analysis of the financial performance for the adjustment of medical fees.

• 가정과삶의질연구
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• 제34권3호
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• pp.113-128
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• 2016

The Purpose of this study is to find the levels of keeping financial records among Korean households and to reveal the effect of keeping financial records on financial soundness of households. The 2014 Consumer Empowerment Index of the Korean consumer agency, which includes the surveyed results of 1,000 individuals, was analyzed as a secondary dataset. As a result, the following findings emerged during the study. First, 25.9% of consumers replied that they were keeping financial records. Factors associated with keeping financial records were gender and income. Women were more likely to keep financial records than men. Also, income had significant effects on keeping financial records. Second, levels of meeting percentages of financial ratios were highest in the debt to income ratio, which was 81.5%, and lowest in the investment ratio, which was 14.5%. Furthermore, 52.6% met the savings ratio, 40.6% met the emergency funds ratio, 24.6% met the retirement savings ratio. Meeting a percentage of the savings ratio did not fluctuated for 16 years, although the debt to income ratio has decreased around 15% since 1998. Third, keeping a household account book had signigicant influences on meeting percentages of financial ratios. Magnitudes of effects ranged between 1.4-1.8 odds, which were as much as the income effects. In summary, effects of keeping financial records were evidenced in this study. It is suggested that the importance of keeping financial records should be stressed in financial education and counseling programs.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권12호
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• pp.3218-3241
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• 2023

Financial fraud undermines the sustainable development of financial markets. Financial statements can be regarded as the key source of information to obtain the operating conditions of listed companies. Current research focuses more on mining financial digital data instead of looking into text data. However, text data can reveal emotional information, which is an important basis for detecting financial fraud. The audit opinion of the financial statement is especially the fair opinion of a certified public accountant on the quality of enterprise financial reports. Therefore, this research was carried out by using the data features of 4,153 listed companies' financial annual reports and audits of text opinions in the past six years, and the paper puts forward a financial fraud detection model integrating audit opinions. First, the financial data index database and audit opinion text database were built. Second, digitized audit opinions with deep learning Bert model was employed. Finally, both the extracted audit numerical characteristics and the financial numerical indicators were used as the training data of the LightGBM model. What is worth paying attention to is that the imbalanced distribution of sample labels is also one of the focuses of financial fraud research. To solve this problem, data enhancement and Focal Loss feature learning functions were used in data processing and model training respectively. The experimental results show that compared with the conventional financial fraud detection model, the performance of the proposed model is improved greatly, with Area Under the Curve (AUC) and Accuracy reaching 81.42% and 78.15%, respectively.