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Another stop criteria - only for regression trees. As soon as the estimated node value differs from the node training samples responses by less than the parameter value, the node is not split further.

Declaration Syntax
public float regressionAccuracy
Public regressionAccuracy As Single
public:
float regressionAccuracy
Assembly:
Emgu.CV.ML (Module: Emgu.CV.ML) Version: 1.0.0.0 (1.0.0.0)