نتایج جستجو برای: sample selection biasjel classification j31

تعداد نتایج: 1149883  

2004
Gilles Saint-Paul

The Brain Drain: Some Evidence from European Expatriates in the United States This paper uses U.S. Census data from 1990 and 2000 to provide evidence on the labor market characteristics of European-born workers living in the US. It is found that there is a positive wage premium associated with these workers, and that the highly skilled are overrepresented compared with the source country, more ...

1999
James K. Galbraith

This paper presents a procedure for studying industrial performance and related issues such as changes in the wage structure. This procedure combines cluster analysis and discriminant analysis as a package, and applies this package to time series data. This enables us to organize industrial data into groups with similar wage or performance histories and then to extract summary time-series showi...

Journal: :IEEE Intelligent Informatics Bulletin 2009
Pengyi Yang Zili Zhang

Feature selection is an important technique in dealing with application problems with large number of variables and limited training samples, such as image processing, combinatorial chemistry, and microarray analysis. Commonly employed feature selection strategies can be divided into filter and wrapper. In this study, we propose an embedded two-layer feature selection approach to combining the ...

Journal: :international journal of electrical and electronics engineering 0
n. daneshpour a. abdollahzadeh barfourosh

several techniques exist to select and materialize a proper set of data in a suitable structure that manage the queries submitted to the online analytical processing systems. these techniques are called view management techniques, which consist of three research areas: 1) view selection to materialize, 2) query processing and rewriting using the materialized views, and 3) maintaining materializ...

Journal: :international journal of smart electrical engineering 2012
sepideh araban fardad farokhi kaveh kangarloo

detecting faces in cluttered backgrounds and real world has remained as an unsolved problem yet. in this paper, by using composition of some kind of independent features and one of the most common appearance based approaches, and multilayered perceptron (mlp) neural networks, not only some questions have been answered, but also the designed system achieved better performance rather than the pre...

2005
Thomas K. Bauer Mathias Sinning IZA Bonn RWI Essen

Blinder-Oaxaca Decomposition for Tobit Models In this paper, a decomposition method for Tobit-models is derived, which allows the differences in a censored outcome variable between two groups to be decomposed into a part that is explained by differences in observed characteristics and a part attributable to differences in the estimated coefficients. The method is applied to a decomposition of t...

2005
Geraint Johnes

Regression and neural network models of wage determination are constructed where the explanatory variables include detailed information about skills. People skills, strategic skills, and IT skills all carry strong and significant wage premia; problemsolving skills (surprisingly) and physical skills (less surprisingly) do not. In contrast to the impact of school curriculum on subsequent earnings...

2005
Joop Hartog Aslan Zorlu IZA Bonn

How Important Is Homeland Education for Refugees’ Economic Position in The Netherlands? We use data on refugees admitted to the Netherlands that include registration of education in their homeland by immigration officers. Such data are seldom available. We investigate the quality and reliability of the registrations and then use them to assess effects on refugees’ economic position during the f...

2012
Markus M. Grabka Johannes Schwarze Gert G. Wagner

The German Economy is not only affected by the Unification of Germany but by a significant influx of immigrants from abroad and huge migration from East to West Germany around the date of unification. Data from the German Socio-Economic Panel Study (GSOEP) allows to disentangle those effects by decomposition of the Theil I (0)-Index of inequality. In addition, the paper offers insights in the t...

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