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We review variable selection and variable screening in high-dimensional linear models. Thereby, a major focus is an empirical comparison of various estimation methods with respect to true and false positive selection rates based on 128 different sparse scenarios from semi-real data (real data...
Persistent link: https://www.econbiz.de/10010998445
with the Lasso algorithm in the linear least squared settings. We show that the fitted transformation matrix is close to …
Persistent link: https://www.econbiz.de/10010998471
approach with locally weighted regression to achieve sparse models. Specifically, the lasso is a shrinkage and selection method … for linear regression. We present an algorithm that embeds lasso in an iterative procedure that alternatively computes … weights and performs lasso-wise regression. The algorithm is tested on three synthetic scenarios and two real data sets …
Persistent link: https://www.econbiz.de/10010998498
The article begins with a review of the main approaches for interpretation the results from principal component analysis (PCA) during the last 50–60 years. The simple structure approach is compared to the modern approach of sparse PCA where interpretable solutions are directly obtained. It is...
Persistent link: https://www.econbiz.de/10010847792
with Bayesian Markov Chain Monte Carlo. The resulting model is equivalent to the frequentist lasso procedure. A … covariates is provided by the approach. An implementation of the lasso procedure for binary quantile regression models is …
Persistent link: https://www.econbiz.de/10010847927
Persistent link: https://www.econbiz.de/10008456126