mode_impute

Perform mode imputation for discrete data. In case of multiple modes in a 
given column, one of them is selected at random for each missing cell.

multivariate

Collection of methods for rating matrix completion, which is a statistical framework for recommender systems. Another relevant application is the imputation of rating-scale survey data in the social and behavioral sciences. Note that matrix completion and imputation are synonymous terms used in different streams of the literature. The main functionality implements robust matrix completion for discrete rating-scale data with a low-rank constraint on a latent continuous matrix (Archimbaud, Alfons, and Wilms (2025) <doi:10.48550/arXiv.2412.20802>). In addition, the package provides wrapper functions for 'softImpute' (Mazumder, Hastie, and Tibshirani, 2010, <https://www.jmlr.org/papers/v11/mazumder10a.html>; Hastie, Mazumder, Lee, Zadeh, 2015, <https://www.jmlr.org/papers/v16/hastie15a.html>) for easy tuning of the regularization parameter, as well as benchmark methods such as median imputation and mode imputation.

Andreas Alfons

RMCLab

Lab for Matrix Completion and Imputation of Discrete Rating Data

Aurore Archimbaud

mode_impute function

<dl><dt>X</dt>
<dd>a matrix or data frame of discrete data with missing values.</dd>
<dt>values</dt>
<dd>an optional numeric vector giving the possible values.
Currently, the possible values are assumed to be the same for all columns. 
If <code>NULL</code>, the unique values of the observed parts of <code>X</code> are 
used.</dd></dl>

Arguments

Author

Mode imputation — mode_impute

<dl>

<dt>X</dt>
<dd>a matrix or data frame of discrete data with missing values.</dd>


<dt>values</dt>
<dd>an optional numeric vector giving the possible values.
Currently, the possible values are assumed to be the same for all columns. 
If <code>NULL</code>, the unique values of the observed parts of <code>X</code> are 
used.</dd>

</dl>

mode_impute: Mode imputation

Description

Usage

Value

Arguments

Author

See Also

Examples