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Comparative Analysis of Credit Risk Models in Relation to SME Segment 中小企业信用风险模型的比较分析
Pub Date : 2018-05-31 DOI: 10.5817/FAI2018-1-3
T. Plíhal, Martina Sponerová, M. Sponer
The importance of credit risk management is well known and was deeply investigated by the banking industry. There is a pressure on financial institutions to still improve their credit risk management systems, so the credit risk of a bank is an unflagging object of discussion. The aim of this article to compare the predicting abilities of several bankruptcy models to the SME segment in the Czech Republic and its subsegments - medium sized, small and micro enterprises. We have focused on small and medium sized enterprises (SMEs) considering their fundamental role played in the Czech economy and the considerable attention placed on SMEs. We have chosen popular bankruptcy models that are often applied, namely the Altman Z-score, Altman model developed especially for SMEs in 2007, the Ohlson O-score, the Zmijewski’s model, the Taffler’s model, and the IN05 model. The basic form of the models was used as proposed by their authors. The results were compared using the contingency table and ROC curve. We have found that the best prediction models are Zmijewski´s and Ohlson´s models which use probit and logit methodologies and according to our analysis, their prediction ability is better than that of models based on discriminant analysis. Surprisingly, model IN05 designed for Czech companies provides average results only. One of the worst performing models is Altman 2007, which was created specifically for SMEs, but according to our analysis it only provides subordinates results.
信用风险管理的重要性是众所周知的,并被银行业深入研究。金融机构仍然面临着完善信用风险管理体系的压力,因此银行的信用风险一直是人们讨论的对象。本文的目的是比较几种破产模型对捷克中小企业部门及其子部门——中小微企业的预测能力。考虑到中小型企业在捷克经济中发挥的基本作用以及对中小型企业的相当重视,我们将重点放在中小型企业上。本文选取了常用的破产模型,即Altman Z-score、2007年专门为中小企业开发的Altman模型、Ohlson O-score、Zmijewski模型、Taffler模型和IN05模型。模型的基本形式由作者提出。采用列联表和ROC曲线对结果进行比较。我们发现最好的预测模型是使用probit和logit方法的Zmijewski和Ohlson模型,根据我们的分析,它们的预测能力优于基于判别分析的模型。令人惊讶的是,为捷克公司设计的IN05模型只能提供平均水平的结果。表现最差的模型之一是Altman 2007,它是专门为中小企业创建的,但根据我们的分析,它只提供下属的结果。
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引用次数: 2
Stock Prices and the Rate of Return Analysis: The Case of Warsaw Stock Exchange 股票价格与收益率分析:以华沙证券交易所为例
Pub Date : 2018-05-31 DOI: 10.5817/FAI2018-1-2
M. Jasiniak
The main aims of this article are to verify whether rates of return might be determined by stock prices and to evaluate low price anomaly on the example of Warsaw Stock Exchange. The author states that cheap assets characterized by nominally lower prices are more attractive to buy and bring higher profits in comparison to assets described as expensive. In order to verify the hypothesis, database of 13789 quotations from 1.07.1999 to 30.12.2013 was created. The sample was divided into three groups – cheap, average, and expensive stocks. Finally, the statistical analysis was conducted using 2924 records including only cheap and expensive units. Statistical analysis confirms that low–priced assets generate higher profits and lower losses.
本文的主要目的是验证回报率是否可以由股票价格决定,并以华沙证券交易所为例评估低价异常。作者指出,与被描述为昂贵的资产相比,以名义上较低的价格为特征的廉价资产更具购买吸引力,并带来更高的利润。为了验证这一假设,创建了1999年7月1日至2013年12月30日期间13789条引文的数据库。样本被分为三组——廉价股票、普通股票和昂贵股票。最后,使用2924份记录进行了统计分析,其中仅包括廉价和昂贵的单位。统计分析证实,低价资产产生更高的利润和更低的损失。
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引用次数: 0
Causality in the Polish Housing Market: Evidence from Biggest Cities 波兰住房市场的因果关系:来自大城市的证据
Pub Date : 2018-05-31 DOI: 10.5817/FAI2018-1-1
Krysztof Drachal
The aim of the paper is to examine the causal relationship between the real property prices in biggest Polish cities within VAR model framework. Both offer and transactional prices are used. Existing stock market, as well as primary market are analysed. The data are quarterly and taken from 17 biggest Polish cities. The analysed period is 2006-2015. Both VAR and VECM approaches were applied. Their limitations and possible predictions were discussed. A significant interaction between various regional real estate markets in Poland has been observed. However, the leading role of the capital city could not be confirmed by the methodology used.
本文的目的是在VAR模型框架内检验波兰最大城市房地产价格之间的因果关系。报价和交易价格都被使用。对现有股票市场和一级市场进行了分析。该数据每季度发布一次,来自波兰17个最大的城市。分析期间为2006-2015年。VAR和VECM方法同时应用。讨论了它们的局限性和可能的预测。观察到波兰各区域房地产市场之间存在显著的相互作用。然而,使用的方法无法证实首都的主导作用。
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引用次数: 3
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Financial Assets and Investing
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