Results 31 to 40 of about 24,465 (256)
Unobserved Heterogeneity and International Benchmarking in Public Transport [PDF]
SSRN Electronic Journal, 2009 We analyze the technical efficiency of German and Swiss urban public transport companies by means of SFA. In transport networks we might face different network structures or complexities, not observed, but influencing the production process. The unobserved factors are typically modeled as separable factors.
Astrid Cullmann +2 more
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Discretizing Unobserved Heterogeneity
, 2021 We study discrete panel data methods where unobserved heterogeneity is revealed in a first step, in environments where population heterogeneity is not discrete. We focus on two-step grouped fixed-effects (GFE) estimators, where individuals are first classified into groups using kmeans clustering, and the model is then estimated allowing for group ...
openaire +2 more sources
A latent curve analysis of unobserved heterogeneity in university achievements
Statistica, 2013 The aim of this paper is to analyze the academic achievement of a cohort of students enrolled in 2001 at the Faculty of Economics of the University of Bologna by using a latent growth model for longitudinal data.
Silvia Bianconcini +3 more
doaj +1 more source
Antecedents of online purchase intention and behaviour: uncovering unobserved heterogeneity
Journal of Business Economics and Management, 2019 The paper aims at exploring the antecedents of customers’ online purchase intention and behaviour, and at uncovering sources of heterogeneity. A sample of customers was surveyed to measure perceived risk and benefits, trust, online purchase intention and
Joaquim Silva +3 more
doaj +1 more source
Approximation of Zero-Inflated Poisson Credibility Premium via Variational Bayes Approach
Risks, 2022 While both zero-inflation and the unobserved heterogeneity in risks are prevalent issues in modeling insurance claim counts, determination of Bayesian credibility premium of the claim counts with these features are often demanding due to high ...
Minwoo Kim, Himchan Jeong, Dipak Dey
doaj +1 more source
Unobserved heterogeneity and reserve prices in auctions [PDF]
The RAND Journal of Economics, 2009 This article shows how reserve prices can be used to control for unobserved object heterogeneity to identify and estimate the distribution of bidder values in auctions. Reserve prices are assumed to be monotonic in the realization of unobserved heterogeneity, but not necessarily set optimally. The model is estimated using transaction prices from a used
openaire +1 more source
The impact of contactless payment on cash usage at an early stage of diffusion
Swiss Journal of Economics and Statistics, 2020 This paper explores the impact of contactless payment on consumers’ demand for cash at an early stage of diffusion. The specific devices that are investigated are debit and credit cards, in which the feature is embedded.
Tobias Trütsch
doaj +1 more source
Revista Colombiana de Estadística, 2016 This paper extends the conditional duration model proposed by Luca & Zuccolotto (2003) proposing an infinite mixture of distributions based on non-exponentials that account for the unobserved market heterogeneity of traders.
EMILIO GÓMEZ-DÉNIZ +1 more
doaj +1 more source
Unobserved Heterogeneity in Matching Games [PDF]
Journal of Political Economy, 2018 Agents in two-sided matching games vary in characteristics that are unobservable in typical data on matching markets.
Fox, Jeremy T. +2 more
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Molecular Oncology, EarlyView.Many patients with urothelial cancer do not benefit from treatment with pembrolizumab, while at risk of severe side effects. Changes in the levels of circulating tumor DNA early during treatment, measured by a simple and affordable assay that can be easily implemented in the clinic, can be used as a prognostic tool to identify these patients.
Youssra Salhi +14 more
wiley +1 more source