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Exponential family Fisher vector for image classification
(Elsevier Science, 2015-07)
One of the fundamental problems in image classification is to devise models that allow us to relate the images to higher-level semantic concepts in an efficient and reliable way. A widely used approach consists on extracting ...
Robust estimators for additive models using backfitting
(Taylor & Francis Ltd, 2017-10)
Additive models provide an attractive setup to estimate regression functions in a nonparametric context. They provide a flexible and interpretable model, where each regression function depends only on a single explanatory ...
Asymptotic behavior of robust estimators in partially linear models with missing responses: The effect of estimating the missing probability on the simplified marginal estimators
(Springer, 2011-11)
In this paper, we consider a semiparametric partially linear regression model where missing data occur in the response. We derive the asymptotic behavior of the robust estimators for the regression parameter and of the ...
Robust estimation in partially linear errors-in-variables models
(Elsevier Science, 2017-02)
In many applications of regression analysis, there are covariates that are measured with errors. A robust family of estimators of the parametric and nonparametric components of a structural partially linear errors-in-variables ...
Estimation of the marginal location under a partially linear model with missing responses
(Elsevier Science, 2010-02)
In this paper, we consider a semiparametric partially linear regression model where there are missing data in the response. We propose robust Fisher-consistent estimators for the regression parameter, for the regression ...
Plug-in marginal estimation under a general regression model with missing responses and covariates
(Springer, 2018-06)
In this paper, we consider a general regression model where missing data occur in the response and in the covariates. Our aim is to estimate the marginal distribution function and a marginal functional, such as the mean, ...
Robust estimation in single-index models when the errors have a unimodal density with unknown nuisance parameter
(Springer Heidelberg, 2020-06)
This paper develops a robust profile estimation method for the parametric and nonparametric components of a single-index model when the errors have a strongly unimodal density with unknown nuisance parameter. We derive ...
Dimensionality reduction for visualization of normal and pathological speech data
(Elsevier, 2009-07)
For an adequate analysis of pathological speech signals, a sizeable number of parameters is required, such as those related to jitter, shimmer and noise content. Often this kind of high-dimensional signal representation ...
Traveling waves in the nonlocal KPP-Fisher equation: Different roles of the right and the left interactions
(2016)
We consider the nonlocal KPP-Fisher equation u(t)(t, x) = u(xx)(t, x) u(t, x)(1 - (K * u)(t, x)) which describes the evolution of population density u(t, x) with respect to time t and location x. The non-locality is expressed ...