MetaepochSnapshot-class

A S4 class representing a snapshot of one metaepoch.

The HMS (Hierarchic Memetic Strategy) is a composite global optimization
strategy consisting of a multi-population evolutionary strategy and some
auxiliary methods. The HMS makes use of a dynamically-evolving data structure
that provides an organization among the component populations. It is a tree
with a fixed maximal height and variable internal node degree. Each component
population is governed by a particular evolutionary engine. This package
provides a simple R implementation with examples of using different genetic
algorithms as the population engines. References: J. Sawicki, M. Łoś,
M. Smołka, J. Alvarez-Aramberri (2022) <doi:10.1007/s11047-020-09836-w>.

Wojciech Achtelik

hmsr

Multipopulation Evolutionary Strategy HMS

Marcin Kozubek

Maciej Smołka

AGH University of Kraków 

MetaepochSnapshot-class function

<dl>
<dt><code>demes</code></dt>
<dd>list of objects of class Deme.</dd></dl>
<dt><code>best_fitness</code></dt>
<dd>numeric - best fitness value of a metaepoch.</dd>
<dt><code>best_solution</code></dt>
<dd>numeric - best solution of a metaepoch.</dd>
<dt><code>time_in_seconds</code></dt>
<dd>numeric - time of metaepoch in seconds.</dd>
<dt><code>fitness_evaluations</code></dt>
<dd>numeric - number of fitness evaluations.</dd>
<dt><code>blocked_sprouts</code></dt>
<dd>list - list of sprouts that were blocked by sprouting
condition. A sprout is a potential origin of a new Deme, it can be blocked
by sc -- sprouting condition. See <code>sc_max_metric</code> for more details.</dd>
<dt><code>is_evolutionary</code></dt>
<dd>logical - <code>TRUE</code> for all metaepochs except the
gradient one.</dd>

Slots

A S4 class representing a snapshot of one metaepoch. — MetaepochSnapshot-class

<dl>
<dt><code>demes</code></dt>
<dd>list of objects of class Deme.</dd>


<dt><code>best_fitness</code></dt>
<dd>numeric - best fitness value of a metaepoch.</dd>


<dt><code>best_solution</code></dt>
<dd>numeric - best solution of a metaepoch.</dd>


<dt><code>time_in_seconds</code></dt>
<dd>numeric - time of metaepoch in seconds.</dd>


<dt><code>fitness_evaluations</code></dt>
<dd>numeric - number of fitness evaluations.</dd>


<dt><code>blocked_sprouts</code></dt>
<dd>list - list of sprouts that were blocked by sprouting
condition. A sprout is a potential origin of a new Deme, it can be blocked
by sc -- sprouting condition. See <code>sc_max_metric</code> for more details.</dd>


<dt><code>is_evolutionary</code></dt>
<dd>logical - <code>TRUE</code> for all metaepochs except the
gradient one.</dd>


</dl>

MetaepochSnapshot-class: A S4 class representing a snapshot of one metaepoch.

Description

Arguments

Slots