covarExpand

Internal function called by <code>hbal</code> to serially expand covariates.

Implements hierarchically regularized entropy balancing proposed by Xu and Yang (2022) <doi:10.1017/pan.2022.12>. The method adjusts the covariate distributions of the control group to match those of the treatment group. 'hbal' automatically expands the covariate space to include higher order terms and uses cross-validation to select variable penalties for the balancing conditions.

Yiqing Xu

hbal

Hierarchically Regularized Entropy Balancing

Eddie Yang

covarExpand function

<dl><dt>X</dt>
<dd>a matrix of covariates.</dd><dt>exp.degree</dt>
<dd>the degree of the polynomial.</dd><dt>treatment</dt>
<dd>a vector of treatment status</dd><dt>exclude</dt>
<dd>a vector of covariate name pairs or triplets to be excluded.</dd></dl>

Arguments

Author

Serial Expansion of Covariates — covarExpand

<dl>

<dt>X</dt>
<dd>a matrix of covariates.</dd>

<dt>exp.degree</dt>
<dd>the degree of the polynomial.</dd>

<dt>treatment</dt>
<dd>a vector of treatment status</dd>

<dt>exclude</dt>
<dd>a vector of covariate name pairs or triplets to be excluded.</dd>

</dl>

covarExpand: Serial Expansion of Covariates

Description

Usage

Value

Arguments

Author