SORT

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46 p, 1.1 MB

Modelling consumer credit risk via survival analysis / Cao, Ricardo (Universidade da Coruña) ; Vilar, Juan M. (Universidade da Coruña) ; Devía, Andrés (Universidade da Coruña) ; Universidade da Coruña
Credit risk models are used by financial companies to evaluate in advance the insolvency risk caused by credits that enter into default. Many models for credit risk have been developed over the past few decades. [...]
2009
SORT : statistics and operations research transactions, Vol. 33, Núm. 1 (January-June 2009) , p. 3-30

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22 p, 323.5 KB

Estimating unemployment in very small areas / Ugarte, M. D. (Universidad Pública de Navarra. Departamento de Estadística, Informática y Matemáticas) ; Goicoa, T. (Universidad Pública de Navarra. Departamento de Estadística, Informática y Matemáticas) ; Militino, A. F. (Universidad Pública de Navarra. Departamento de Estadística, Informática y Matemáticas) ; Sagaseta-López, M. (Instituto de Estadística de Navarra)
In the last few years, European countries have shown a deep interest in applying small area techniques to produce reliable estimates at county level. However, the specificity of every European country and the heterogeneity of the available auxiliary information, make the use of a common methodology a very difficult task. [...]
2009
SORT : statistics and operations research transactions, Vol. 33, Núm. 1 (January-June 2009) , p. 49-70

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14 p, 181.4 KB

A general procedure of estimating the population mean in the presence of non-response under double sampling using auxiliary information / Singh, Housila P. ; Kumar, Sunil
In the present study, we propose a general class of estimators for population mean of the study variable in the presence of non-response using auxiliary information under double sampling. The expression of mean squared error (MSE) of the proposed class of estimators is derived under double (two-stage) sampling. [...]
2009
SORT : statistics and operations research transactions, Vol. 33, Núm. 1 (January-June 2009) , p. 71-84

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20 p, 444.0 KB

On the performance of small-area estimators : fixed vs. random area parameters / Costa, Àlex ; Satorra, Albert ; Ventura, Eva
Most methods for small-area estimation are based on composite estimators derived from designor model-based methods. A composite estimator is a linear combination of a direct and an indirect estimator with weights that usually depend on unknown parameters which need to be estimated. [...]
2009
SORT : statistics and operations research transactions, Vol. 33, Núm. 1 (January-June 2009) , p. 85-104

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2 p, 36.6 KB

Book review / Valls Marsal, Joan (Institut Català d'Oncologia)
Obra ressenyada: María Dolores UGARTE, Ana F. MILITINO and Alan T. ARNHOLT, Probability and statistics with R. Chapman & Hall/CRC, 2008.
2009
SORT : statistics and operations research transactions, Vol. 33 Núm. 1 (January-June 2009)

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