l1projection

Provides the L1-norm projection of points on a subspace, including both scores and reconstructions.

Implementations of several methods for principal component analysis
using the L1 norm. The package depends on COIN-OR Clp version >=
1.17.4. The methods implemented are
PCA-L1 (Kwak 2008) <DOI:10.1109/TPAMI.2008.114>,
L1-PCA (Ke and Kanade 2003, 2005) <DOI:10.1109/CVPR.2005.309>,
L1-PCA* (Brooks, Dula, and Boone 2013) <DOI:10.1016/j.csda.2012.11.007>,
L1-PCAhp (Visentin, Prestwich and Armagan 2016)
<DOI:10.1007/978-3-319-46227-1_37>,
wPCA (Park and Klabjan 2016) <DOI: 10.1109/ICDM.2016.0054>,
awPCA (Park and Klabjan 2016) <DOI: 10.1109/ICDM.2016.0054>,
PCA-Lp (Kwak 2014) <DOI:10.1109/TCYB.2013.2262936>, and
SharpEl1-PCA (Brooks and Dula, submitted).

Paul Brooks

pcaL1

L1-Norm PCA Methods

l1projection function

<dl> <dt>X</dt>
<dd>data, in <code>matrix</code> or table form</dd> <dt>loadings</dt>
<dd>an orthonormal matrix of loadings vectors</dd></dl>

Arguments

L1 Projection — l1projection

<dl>

 <dt>X</dt>
<dd>data, in <code>matrix</code> or table form</dd>

 <dt>loadings</dt>
<dd>an orthonormal matrix of loadings vectors</dd>

</dl>

l1projection: L1 Projection

Description

Usage

Value

Arguments

Details