The structure represents the logarithmic grid range of statmodel parameters. More...
#include <opencv2/ml.hpp>
Public Member Functions | |
| ParamGrid () | |
| Default constructor. | |
| ParamGrid (double _minVal, double _maxVal, double _logStep) | |
| Constructor with parameters. | |
Static Public Member Functions | |
| static Ptr< ParamGrid > | create (double minVal=0., double maxVal=0., double logstep=1.) |
| Creates a ParamGrid Ptr that can be given to the SVM::trainAuto method. | |
Public Attributes | |
| double | logStep |
| Logarithmic step for iterating the statmodel parameter. | |
| double | maxVal |
| Maximum value of the statmodel parameter. Default value is 0. | |
| double | minVal |
| Minimum value of the statmodel parameter. Default value is 0. | |
Detailed Description
The structure represents the logarithmic grid range of statmodel parameters.
It is used for optimizing statmodel accuracy by varying model parameters, the accuracy estimate being computed by cross-validation.
Constructor & Destructor Documentation
◆ ParamGrid() [1/2]
| cv::ml::ParamGrid::ParamGrid | ( | ) |
Default constructor.
◆ ParamGrid() [2/2]
| cv::ml::ParamGrid::ParamGrid | ( | double | _minVal, |
| double | _maxVal, | ||
| double | _logStep | ||
| ) |
Constructor with parameters.
Member Function Documentation
◆ create()
|
static |
Creates a ParamGrid Ptr that can be given to the SVM::trainAuto method.
- Parameters
-
minVal minimum value of the parameter grid maxVal maximum value of the parameter grid logstep Logarithmic step for iterating the statmodel parameter
Member Data Documentation
◆ logStep
| double cv::ml::ParamGrid::logStep |
Logarithmic step for iterating the statmodel parameter.
The grid determines the following iteration sequence of the statmodel parameter values:
\[(minVal, minVal*step, minVal*{step}^2, \dots, minVal*{logStep}^n),\]
where \(n\) is the maximal index satisfying
\[\texttt{minVal} * \texttt{logStep} ^n < \texttt{maxVal}\]
The grid is logarithmic, so logStep must always be greater than 1. Default value is 1.
◆ maxVal
| double cv::ml::ParamGrid::maxVal |
Maximum value of the statmodel parameter. Default value is 0.
◆ minVal
| double cv::ml::ParamGrid::minVal |
Minimum value of the statmodel parameter. Default value is 0.
The documentation for this class was generated from the following file:
- opencv2/ml.hpp
