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Robust Estimation with Discrete Explanatory Variables

Cizek, Pavel - EconWPA - 2002

The least squares estimator is probably the most frequently used estimation method in regression analysis. Unfortunately, it is also quite sensitive to data contamination and model misspecification. Although there are several robust estimators designed for parametric regression models that can...

Persistent link: https://www.econbiz.de/10005119143

Bayesian Methods for Improving Credit Scoring Models

Posch Peter N.; Gunter, Loeffler; Christiane, Schoene - EconWPA - 2005

We propose a Bayesian methodology that enables banks to improve their credit scoring models by imposing prior information. As prior information, we use coefficients from credit scoring models estimated on other data sets. Through simulations, we explore the default prediction power of three...

Persistent link: https://www.econbiz.de/10005134954

Prior distributions for variance parameters in hierarchical models

Gelman, Andrew - EconWPA - 2004

Various noninformative prior distributions have been suggested for scale parameters in hierarchical models. We construct a new folded-noncentral- t family of conditionally conjugate priors for hierarchical standard deviation parameters, and then consider noninformative and weakly informative...

Persistent link: https://www.econbiz.de/10005062561

Bayesian measures of explained variance and pooling in multilevel (hierarchical) models

Gelman, Andrew; Pardoe, Iain - EconWPA - 2004

Explained variance (R^2) is a familiar summary of the fit of a linear regression and has been generalized in various ways to multilevel (hierarchical) models. The multilevel models we consider in this paper are characterized by hierarchical data structures in which individuals are grouped into...

Persistent link: https://www.econbiz.de/10005407962

Bayesian Semiparametric Regression for Autoregressive Models with Possible Unit Roots

Silva, Ricardo Gonçalves - EconWPA - 2004

In this paper we consider bayesian semiparametric regression within the generalized linear model framework. Specifically, we study a class of autoregressive time series where the time trend is incorporated in a nonparametrically way. Estimation and inference where performed through Markov Chain...

Persistent link: https://www.econbiz.de/10005407984

Statistical Inference as a Bargaining Game

Ley, Eduardo - EconWPA - 2001

This paper extends the analogy previously established by Leamer (1978a), between a Bayesian inference problem and an economics allocation problem, and shows that posterior modes can be interpreted as optimal outcomes of a bargaining game. This bargaining game, over a parameter value, is played...

Persistent link: https://www.econbiz.de/10005119185

MRS. GANDHI GAVE NEW ECONOMIC APPROACHES

SUBRAMANIAM, DR. VSR. - EconWPA - 2004

Productivity were the Essence of the Administrative strategy of Mrs. Indira Gandhi (Late Prime Minister of India). These approaches …

Persistent link: https://www.econbiz.de/10005076600

ICT productivity and firm propensity to innovative investment: learning effect evidence from italina micro data

Atzeni, Gianfranco Enrico; Carboni, Oliviero Antonio - EconWPA - 2005

This work attempts to shed light on the “information technology productivity paradox”. Employing a large data set of … Italian manufacturing firms we compute ICT marginal productivity across different cluster of firms and the impact of …/introduction behaviour and firm’s technological investment aptitude have any role in explaining ICT productivity. We find that low capital …

Persistent link: https://www.econbiz.de/10005076878

Biased Technical Change and the Malmquist Productivity Index

Fare, R.; Grifell-Tatje, E.; Grosskopf, S.; Lovell, C.A.K. - EconWPA - 1995

The Malmquist productivity index has many attractive features. One is that it decomposes into a technical efficiency … bias index makes no contribution to productivity change. …

Persistent link: https://www.econbiz.de/10005077048

REDEFINED PRODUCTIVITY & SOCIO-ECONOMIC DEVELOPMENT ORIENTED MANAGEMENT DECISIONS.

DR.VSR.SUBRAMANIAM - EconWPA - 2004

In the Domain of Development Economics, Productivity is represented by Output to Input Ratio & Management Decisions … InputQuantum ratio also for a favourable condition. This is presented in 2.Part1:Expanded Productivity Algebraic Model Part2 …:Integrated Management Decision Algebraic Model. CONCEPTS DERIVED :- (SED=SOCIO- ECONOMIC DEVELOPMENT UNITS)01.PRODUCTIVITY …

Persistent link: https://www.econbiz.de/10005077079