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CART analysis of qualitative variables to improve credit rating processes

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Author Info
Giampaolo Gabbi () (Banking and Finance Dpt Sda Bocconi Milan - Siena University)
Massimo Matthias (University of Siena, Italy)
Marco De Lerma (University of Siena, Italy)

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Abstract

Qualitative behaviours of small firms are explored to forecast criticalities in the Italian credit market. We build up an evaluation process to integrate quantitative rating practices. Research method: Relevant qualitative factors to estimate the credit risk are empirically investigated by choosing variables related to seven perspectives of analysis (sector, governance, internal processes, learning and growth, customers, economic-financial analysis, quality of balance sheet). Outcomes have been elaborated through the Classification And Regression Tree. Rating evaluation is based upon qualitative factors. Findings: The capability to forecast bad firms is 92.4\%, while 84.5\% is the percentage to forecast good firms. The Cumulative Accuracy Curve shows the 84\% ability to explain the variance of phenomenon. Main results: ratings of firms are primary explained by aptitude to reach short and long term purposes; banks’ analysts should integrate their quantitative models with qualitative data; methodologies employed offer a quantitative solution to estimate the weight of each variable. Conclusions: When balance sheets are characterized by small consistency, qualitative variables should be taken into consideration to elaborate or integrate rating procedures.

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Publisher Info
Paper provided by Society for Computational Economics in its series Computing in Economics and Finance 2006 with number 179.

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Date of creation: 04 Jul 2006
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Handle: RePEc:sce:scecfa:179

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Related research
Keywords: credit risk; qualitative models; rating; regression tree;

Find related papers by JEL classification:
G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Mortgages
C25 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Discrete Regression and Qualitative Choice Models

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This page was last updated on 2009-12-9.


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