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融合公司治理的信用評等模型:Cubist迴歸樹模型之應用

Considering Corporate Governance to Build Credit Rating Model: Cubist Regression Tree Application

摘要


信用評等是在資訊不對稱下,外部人評估公司之信用程度以及經營狀況等的重要指標,且由於以往的研究通常將單一模型適用至各類公司,但每家公司的特質有所不同,其信用評等模型之各變數的權重值應有所不同。本研究將公司治理因素結合至信用評等模型,且採Cubist迴歸樹模型的方法來建構,其優點可以將影響信用評等模型之關鍵因素萃取出來,而不同的門檻之下各有其所屬的信用評等模型,各評等模型攸關之因素亦會有所差異,可以配適出適合各公司類型的信用評等模型。且本研究融入公司治理因素強化信用評等模型,可以修正以往研究僅考慮財務因素的不足之處。經實證與驗證結果發現,本研究所創建的信用評等模型是更完整的模型,能更準確評估公司的信用評等狀況,以反映公司的經營現狀以及推估發生信用違約的可能性,能有助於預測公司的未來發展,並提供財務報表使用者更有價值的參考資訊。

並列摘要


Credit ratings are an important index used by outsiders to predict the credit level and operational performance of a firm under the circumstance of information asymmetry. Most previous studies have applied a single model to fit all types of firms, often resulting in inaccurate estimations as different types of firms have different characteristics. The variable weights of a credit rating model should not be the same. This study incorporated the factor of corporate governance into the credit rating model, and used Cubist regression tree to construct an empirical model. The proposed model is capable of extracting the key factors that affect the credit rating model, thereby taking into consideration the thresholds and variables appropriate to firms. This model can overcome the insufficiencies of previous studies that only considered financial factors. Our empirical results show that the proposed model provides a more complete and accurate assessment of the credit rating of firms, reflecting current operational phenomena, and inferring the probability of default. This model can be used to predict the future development of firms and provide accurate information for users of financial statements.

參考文獻


李沃牆、朱竣平(2008)。信用評等、公司違約率與財務危機預測之探討。真理財經學報。18,33-70。
李樑堅、張志向(1999)。中小企業授信評估模式建立之研究。臺大管理論叢。9(2),69-100。
吳當傑(2007)。公司治理理論與實務。財團法人中華民國證券暨期貨市場發展基金會。
沈中華、林公韻(2005)。違約機率預測與極端值。財務金融學刊。13(3),1-32。

被引用紀錄


呂明杰(2013)。從企業信評論產險業辦理法令遵循評等之可行性〔碩士論文,淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2013.00434
許竣棠(2014)。影響企業貸款利率高低之因素分析〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2014.10344
陳逢時(2014)。公司成長機會與信用品質對私募股權折價幅度之影響〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2014.10043

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