<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Li, Jiwen</style></author><author><style face="normal" font="default" size="100%">Jaeger, Herbert</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Minimal Energy Control of an ESN Pattern Generator</style></title><secondary-title><style face="normal" font="default" size="100%">Jacobs University Technical Report</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://minds.jacobs-university.de/sites/default/files/uploads/papers/2399_LiJaeger11.pdf</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">26</style></number><publisher><style face="normal" font="default" size="100%">Jacobs University Bremen</style></publisher><abstract><style face="normal" font="default" size="100%">&lt;p&gt;In this report we present a method of adding a feedback control mecha- &lt;br /&gt;
nism to an echo state network (ESN) pattern generator in order to modulate &lt;br /&gt;
its output patterns with the purpose of tracking slowly varying control tar- &lt;br /&gt;
gets, e.g. shift, amplitude, or frequency of an oscillatory pattern. A proof- &lt;br /&gt;
of-principle case study is presented where a basic ESN is trained to produce &lt;br /&gt;
a stable sinewave oscillation with fixed shift, amplitude and frequency. With &lt;br /&gt;
the controller in place, the system demonstrates that the shift, amplitude &lt;br /&gt;
and frequency of the produced sine waveform can be modulated simultane- &lt;br /&gt;
ously by suitably generated slow varying control signals inserted into the &lt;br /&gt;
network. Furthermore, an equilibration procedure is introduced to relearn &lt;br /&gt;
ESN weights such that the equilibrated ESN pattern generator can approxi- &lt;br /&gt;
mately reproduce the reservoir dynamics across the controllable range, with &lt;br /&gt;
the feedback control loop switched o</style></abstract></record></records></xml>