# Echo State Networks trained by Tikhonov least squares are <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e144" altimg="si5.svg"><mml:mrow><mml:msup><mml:mrow><mml:mi>L</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup><mml:mrow><mml:mo>(</mml:mo><mml:mi>μ</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> approximators of ergodic dynamical systems

> Research article (Physica D Nonlinear Phenomena, 2021) · cited 53× · AI/ML

**Wikidata**: [openalex:W3024515584](https://www.wikidata.org/wiki/openalex:W3024515584)  
**Source**: https://4ort.xyz/entity/echo-state-networks-trained-by-tikhonov-least-squares-are-mml-math-xmlns-mml-http-www-w3-org-1998-math-mathml-display-in