Το μοντέλο του Altman και οι γενικεύσεις του
Altman's model and it's generalizations

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Keywords
Βασιλεία ; Πιστωτικός κίνδυνος ; Διαχωριστική ανάλυση ; Altman’s Z-score ; Πολυμεταβλητή ανάλυσηAbstract
The great interest of credit risk in recent years and the requirements of the institutions
(Basel) lead to the continuous effort of forecasting models development.
The aim of this MSc thesis is to present, a credit rating model based on multivariate
discriminant analysis, the Altman’s Model which was developed in 1968. We provide
descriptions about variables, weights and cut-off points selections. After that empirical
results and conclusions are presented, such as the optimization from Z-score to ZETA score
Variations of Altman’s model are presented as well, not only from himself but also
from other researchers of that era.
At the end of this dissertation, we apply the Altman’s method to simulated data and
compare the results obtained.
As a conclusion, it should be noted that the model of Altman, requires improvements.
Already in the literature we can find several researchers who proposed extensions and
improvements of the model, which is more appropriate for fitting to real market data.