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Now showing items 41-50 of 65
Absorbing Sets in Coalitional Systems
(2001-12)
The purpose of this paper is twofold: First, to present an approach and a solution for analyzing the stability of coalition structures: We define a coalitional system (a set and a binary relation on that set) that explains ...
Un Modelo Lineal Generalizado Semiparametrico para Analisis de Duracion con Censura
(2000-07)
[EN] Aitkin and Clayton (1980) proposed to analyze duration models using generalized linear models. In this work we extend that methodology allowing for some nonspecified covariable effect. The model we propose is a ...
Nonparametric estimation of time varying parameters under shape restrictions
(2001-01)
In this paper we propose a new method to estimate nonparametrically a time varying parameter model when some qualitative information from outside data (e.g. seasonality) is available. In this framework we make two main ...
Factores de riesgo y supervivencia libre de tumor en pacientes con trasplante renal de cadáver
(2003)
[Background] There is an agreement in the fact that cancer incidence in transplant recipients increases at a rate disproportionately greater than in the general population. Several clinical studies have identified cancer ...
Entrada endógena ineficiente
(2002-07)
[EN] Stewart (1994) presents a model of endogenous entry. In his article Stewart proposes the following topic for future research: "An important feature of the model is that entry would be inefficient from the producers' ...
Predicting Betas: Two new methods
(2009)
Betas play a central role in modern finance. The estimation of betas from historical data and their extrapolation into the future is of considerable practical interest. We propose two new methods: the first is a direct ...
Multivariate Data Imputation using Trees
(2002)
We address the problem of completing two files with records containing a fully observed common subset of variables. The tecnique investigated involves the use of regression and/or classification trees. An extension of ...
Multiple imputation of time series: an application to the construction of historical price indexes
(2005)
Time series in many areas of application, and notably in the social sciences, are frequently incomplete. This is particularly annoying when we need to have complete data, for instance to compute indexes as a weighted average ...
Índices de Satisfacción del Consumidor: una aplicación de Modelos de Ecuaciones Estructurales a la Industria Automovilística Española
(2002-10)
El objetivo del presente trabajo es la obtención de la variable latente Satisfacción Global del Consumidor (SGC), a partir de 25 indicadores proporcionados por la revista Autopista para 130 modelos de coches. La metodología ...
Choice experiment study on the willingness to pay to improve
(2009-06)
Modern forms of energy are an important vehicle towards poverty alleviation in rural areas of developing countries. Most developing countries’ households heavily rely on wood fuel which impact their health and social–economic ...