random number generation of zero-inflated count response

models

regression

Algorithms compute robust estimators for loss functions in the concave convex (CC) family by the iteratively reweighted convex optimization (IRCO), an extension of the iteratively reweighted least squares (IRLS). The IRCO reduces the weight of the observation that leads to a large loss; it also provides weights to help identify outliers. Applications include robust (penalized) generalized linear models and robust support vector machines. The package also contains penalized Poisson, negative binomial, zero-inflated Poisson, zero-inflated negative binomial regression models and robust models with non-convex loss functions. Wang et al. (2014) <doi:10.1002/sim.6314>,
Wang et al. (2015) <doi:10.1002/bimj.201400143>,
Wang et al. (2016) <doi:10.1177/0962280214530608>,
Wang (2021) <doi:10.1007/s11749-021-00770-2>,
Wang (2024) <doi:10.1111/anzs.12409>.

Zhu Wang

mpath

Regularized Linear Models

rzi function

<dl> <dt>n</dt>
<dd>sample size of random number generation</dd> <dt>x</dt>
<dd>design matrix of count model</dd> <dt>z</dt>
<dd>design matrix of zero model</dd> <dt>a</dt>
<dd>coefficient vector for <code>x</code>, length must be the same as column size of <code>x</code></dd> <dt>b</dt>
<dd>coefficient vector for <code>z</code>, length must be the same as column size of <code>z</code></dd> <dt>theta</dt>
<dd>dispersion parameter for <code>family="negbin"</code></dd> <dt>family</dt>
<dd>distribution of count model</dd> <dt>infl</dt>
<dd>logical value, if TRUE, zero-inflated count response</dd></dl>

Arguments

Zhu Wang &lt;zwang145@uthsc.edu&gt;

Author

random number generation of zero-inflated count response — rzi

<dl>

 <dt>n</dt>
<dd>sample size of random number generation</dd>

 <dt>x</dt>
<dd>design matrix of count model</dd>

 <dt>z</dt>
<dd>design matrix of zero model</dd>

 <dt>a</dt>
<dd>coefficient vector for <code>x</code>, length must be the same as column size of <code>x</code></dd>

 <dt>b</dt>
<dd>coefficient vector for <code>z</code>, length must be the same as column size of <code>z</code></dd>

 <dt>theta</dt>
<dd>dispersion parameter for <code>family="negbin"</code></dd>

 <dt>family</dt>
<dd>distribution of count model</dd>

 <dt>infl</dt>
<dd>logical value, if TRUE, zero-inflated count response</dd>

</dl>

rzi: random number generation of zero-inflated count response

Description

Usage

Value

Arguments

Author

Details

References