Excess heterogeneity, endogeneity and index restrictions

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Excess heterogeneity, endogeneity and index restrictions

An outcome is determined by a structural function in which the e¤ect of some variables of interest is transmitted through a scalar index. Multiple sources of stochastic variation can appear as arguments of the structural function, but not in the index. There may be endogeneity, that is observable and unobservable variables may not be independently distributed. Conditions are provided under whic...

متن کامل

Gravity models of trade: unobserved heterogeneity and endogeneity∗

We consider the estimation of the usual Gravity model of trade, which involves flows of trade, say exports, from country i to country j in time period t. We suggest an easy-to-impliment generalised method of moments estimator that avoids the issues associated with the usual fixed effects treatment of the unobserved heterogeneity in this type of models and at the same time provides consistent pa...

متن کامل

The e-Index, Complementing the h-Index for Excess Citations

BACKGROUND The h-index has already been used by major citation databases to evaluate the academic performance of individual scientists. Although effective and simple, the h-index suffers from some drawbacks that limit its use in accurately and fairly comparing the scientific output of different researchers. These drawbacks include information loss and low resolution: the former refers to the fa...

متن کامل

A Bayesian Semiparametric Approach for Endogeneity and Heterogeneity in Choice Models

Marketing variables included in consumer discrete choice models are often endogenous. Extant treatments using likelihood-based estimators impose parametric distributional assumptions such as normality, on the source of endogeneity. These assumptions are restrictive as misspecified distributions have an impact on parameter estimates and associated elasticities. The normality assumption for endog...

متن کامل

Endogeneity and Heterogeneity in a Probit Demand Model: Estimation Using Aggregate Data

Two issues that have become increasingly important while estimating the parameters of aggregate demand functions to study firm behavior are the endogeneity of marketing activities (typically, price) and heterogeneity across consumers in the market under consideration. Ignoring these issues in the estimation of the demand function parameters can lead to biased and inconsistent estimates for the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Econometrics

سال: 2009

ISSN: 0304-4076

DOI: 10.1016/j.jeconom.2009.02.004