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Conditional Quantile Estimation Based on Optimal Quantization: from Theory to Practice

Listed author(s):
  • Isabelle Charlier
  • Davy Paindaveine
  • Jérôme Saracco

Charlier, Paindaveine, and Saracco (2014) recently introduced a nonparametric estimatorof conditional quantiles based on optimal quantization, but almost exclusively focused onits theoretical properties. In this paper, (i) we discuss its practical implementation (byproposing in particular a method to properly select the corresponding smoothing parameter,namely the number of quantizers) and (ii) we investigate how its finite-sample performancescompare with those of its classical kernel or nearest-neighbor competitors. Monte Carlostudies reveal that the quantization-based estimator competes well in all cases and tends todominate its competitors for non-uniformly distributed covariates. We also treat a real dataset. While the paper mostly focuses on the case of a univariate covariate, we also brieflydiscuss the multivariate case and provide an illustration for bivariate regressors.

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File Function: 2014-39-CHARLIER_PAINDAVEINE_SARACCO-conditional
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Paper provided by ULB -- Universite Libre de Bruxelles in its series Working Papers ECARES with number ECARES 2014-39.

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Length: 30 p.
Date of creation: Sep 2014
Publication status: Published by:
Handle: RePEc:eca:wpaper:2013/174929
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  1. Isabelle Charlier & Davy Paindaveine, 2014. "Conditional Quantile Estimation through Optimal Quantization," Working Papers ECARES ECARES 2014-28, ULB -- Universite Libre de Bruxelles.
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