ini_mixture

Provide an initial kmeans allocation of the individuals/tasks in a dataset
into a definite number of clusters, and return the associated mixture
probabilities.

internal

An implementation for the multi-task Gaussian processes with common
mean framework. Two main algorithms, called 'Magma' and 'MagmaClust',
are available to perform predictions for supervised learning problems, in
particular for time series or any functional/continuous data applications.
The corresponding articles has been respectively proposed by Arthur Leroy,
Pierre Latouche, Benjamin Guedj and Servane Gey (2022)
<doi:10.1007/s10994-022-06172-1>, and Arthur Leroy, Pierre Latouche,
Benjamin Guedj and Servane Gey (2023) <https://jmlr.org/papers/v24/20-1321.html>.
Theses approaches leverage the learning of cluster-specific mean processes,
which are common across similar tasks, to provide enhanced prediction
performances (even far from data) at a linear computational cost (in
the number of tasks). 'MagmaClust' is a generalisation of 'Magma'
where the tasks are simultaneously clustered into groups, each being
associated to a specific mean process. User-oriented functions in the
package are decomposed into training, prediction and plotting
functions. Some basic features (classic kernels, training, prediction) of
standard Gaussian processes are also implemented.

Arthur Leroy

MagmaClustR

Clustering and Prediction using Multi-Task Gaussian Processes
with Common Mean

Pierre Latouche

Pierre Pathé

Alexia Grenouillat

Hugo Lelievre

ini_mixture function

<dl><dt>data</dt>
<dd>A tibble or data frame. Required columns: <code>ID</code>, <code>Input</code>
, <code>Output</code>.</dd>
<dt>k</dt>
<dd>A number, indicating the number of clusters.</dd>
<dt>name_clust</dt>
<dd>A vector of characters. Each element should correspond to
the name of one cluster.</dd>
<dt>nstart</dt>
<dd>A number of restart used in the underlying kmeans algorithm</dd></dl>

Arguments

Mixture initialisation with kmeans — ini_mixture

<dl>

<dt>data</dt>
<dd>A tibble or data frame. Required columns: <code>ID</code>, <code>Input</code>
, <code>Output</code>.</dd>


<dt>k</dt>
<dd>A number, indicating the number of clusters.</dd>


<dt>name_clust</dt>
<dd>A vector of characters. Each element should correspond to
the name of one cluster.</dd>


<dt>nstart</dt>
<dd>A number of restart used in the underlying kmeans algorithm</dd>

</dl>

ini_mixture: Mixture initialisation with kmeans

Description

Usage

Value

Arguments

Examples