| SVMGetDecisionFunction Method |
Retrieves the decision function
Namespace:
OpenCvSharp.ML
Assembly:
OpenCvSharp (in OpenCvSharp.dll) Version: 1.0.0
Syntax public double GetDecisionFunction(
int i,
OutputArray alpha,
OutputArray svidx
)
Public Function GetDecisionFunction (
i As Integer,
alpha As OutputArray,
svidx As OutputArray
) As Double
public:
double GetDecisionFunction(
int i,
OutputArray^ alpha,
OutputArray^ svidx
)
member GetDecisionFunction :
i : int *
alpha : OutputArray *
svidx : OutputArray -> float
Parameters
- i
- Type: SystemInt32
i the index of the decision function.
If the problem solved is regression, 1-class or 2-class classification, then
there will be just one decision function and the index should always be 0.
Otherwise, in the case of N-class classification, there will be N(N-1)/2 decision functions. - alpha
- Type: OpenCvSharpOutputArray
alpha the optional output vector for weights, corresponding to
different support vectors. In the case of linear %SVM all the alpha's will be 1's. - svidx
- Type: OpenCvSharpOutputArray
the optional output vector of indices of support vectors
within the matrix of support vectors (which can be retrieved by SVM::getSupportVectors).
In the case of linear %SVM each decision function consists of a single "compressed" support vector.
Return Value
Type:
Double[Missing <returns> documentation for "M:OpenCvSharp.ML.SVM.GetDecisionFunction(System.Int32,OpenCvSharp.OutputArray,OpenCvSharp.OutputArray)"]
See Also