November 2021
Intermediate to advanced
432 pages
13h 22m
German
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Entwurfsmuster 3: Feature Cross
Das Entwurfsmuster Feature Cross hilft Modellen, Beziehungen zwischen Eingaben schneller zu lernen, indem explizit jede Kombination von Eingabewerten zu einem eigenen Feature gemacht wird.
Problem
Sehen Sie sich den Datensatz in Abbildung 2-14 an. Die Aufgabe besteht darin, einen binären Klassifizierer zu erstellen, der die Plus- und Minuszeichen voneinander trennt.
Wenn man nur die x_1- und x_2-Koordinaten verwendet, ist es nicht möglich, eine lineare Grenze zu finden, die die Plus- und Minusklassen trennt.
Um also dieses Problem zu lösen, müssen wir das Modell komplexer machen, vielleicht mit zusätzlichen Schichten. Es gibt aber eine einfachere Lösung.
Abbildung 2-14: Allein mit »x_1« und »x_2« als Eingaben ...
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