allzero

A logical function to judge if a vector is all zeros. If so, TRUE will be returned; otherwise, FALSE will 
be returned

 zeros

Extremely fast algorithm "QICD", Iterative Coordinate
Descent Algorithm for High-dimensional Nonconvex Penalized Quantile
Regression. This algorithm combines the coordinate descent algorithm
in the inner iteration with the majorization minimization step
in the outside step. For each inner univariate minimization problem,
we only need to compute a one-dimensional weighted median,
which ensures fast computation. Tuning parameter selection is based
on two different method: the cross validation and BIC for
quantile regression model. Details are described in Peng,B and Wang,L. (2015)
<DOI:10.1080/10618600.2014.913516>.

Bo Peng

QICD

allzero:

Description

Usage

Arguments

Value

Details

Examples