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File name: SSRN-id588161. ; Size: 309K
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Study of the Coherence of the Ratings of Banks with the
Probability of Failure Banking in the Emergent Countries (Etude de la Coherence des Ratings de Banques avec la Probabilite de Defaillance Bancaire dans les Pays Emergents)
Christophe J. Godlewski LaRGE Research Center (University of Strasbourg); EM Strasbourg Business School; FSESJ - Université de Haute Alsace
March 2004
LaRGE Working Paper No. 65
Abstract:
This article proposes to apply the methodology of scoring and calibration in order to study the coherence of the ratings of banks with a model of defect of the banks in the emergent countries. Indeed, the role of the rating in time that vector of discipline of market, via the vehiculation of information on the risk of defect, should grow within the framework of the 3e Pilier of the Reform of Basle II. So that this role is effective, it is crucial that the rating is effectively coherent with the probability of defect of the transmitter. According to the results obtained, the use of the scoring to quantify the classes of internal rating gives coherent estimates with the rates of defaut observed. On the other hand, a tendency to the aggregation of information by the rating Moody's and Fitch are put in evidence. Finally, coherence proves more important in term of distribution of the probabilities of defect estimated by class of rating Moody's and Fitch. Cet article propose d'appliquer la methodologie de scoring et de calibrage afin d'etudier la coherence des ratings de banques avec un modele de defaut des banques dans les pays emergents. En effet, le role du rating en temps que vecteur de discipline de marche, via la vehiculation d'informations sur le risque de defaut, devrait croitre dans le cadre du 3e Pilier de la Reforme de Bale II. Pour que ce role soit efficace, il est crucial que le rating soit effectivement coherent avec la probabilite de defaut de l'emetteur. D'apres les resultats obtenus, l'utilisation du scoring pour quantifier les classes de rating interne donne des estimations coherentes avec les taux de d'efaut observes. Par contre, une tendance a l'agregation de l'information par les rating Moody's et Fitch est mise en evidence. Enfin, la coherence s'avere plus importante en terme de repartition des probabilites de defaut estimees par classe de rating Moody's et Fitch.
Note: Downloadable document is in French.
Number of Pages in PDF File: 38
Keywords: Probabilite de defaut et rating de banque, scoring et mapping, pays emergents
JEL Classification: G21, G28
working papers series
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Date posted: September 13, 2004
Suggested CitationGodlewski, Christophe J., Study of the Coherence of the Ratings of Banks with the
Probability of Failure Banking in the Emergent Countries (Etude de la Coherence des Ratings de Banques avec la Probabilite de Defaillance Bancaire dans les Pays Emergents) (March 2004). LaRGE Working Paper No. 65. Available at SSRN: http://ssrn.com/abstract=588161 or http://dx.doi.org/10.2139/ssrn.588161
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