/// <summary>
/// Get the default Decision tree training parameters
/// </summary>
/// <returns>The default Decision tree training parameters</returns>
public static MCvBoostParams GetDefaultParameter()
{
IntPtr ptr = MlInvoke.CvBoostParamsCreate();
MCvBoostParams p = (MCvBoostParams)Marshal.PtrToStructure(ptr, typeof(MCvBoostParams));
MlInvoke.CvBoostParamsRelease(ref ptr);
return(p);
}
/// <summary>
/// Train the boost tree using the specific traning data
/// </summary>
/// <param name="trainData">The training data. A 32-bit floating-point, single-channel matrix, one vector per row</param>
/// <param name="tflag">data layout type</param>
/// <param name="responses">A floating-point matrix of the corresponding output vectors, one vector per row. </param>
/// <param name="varIdx">Can be null if not needed. When specified, identifies variables (features) of interest. It is a Matrix>int< of nx1</param>
/// <param name="sampleIdx">Can be null if not needed. When specified, identifies samples of interest. It is a Matrix>int< of nx1</param>
/// <param name="varType">The types of input variables</param>
/// <param name="missingMask">Can be null if not needed. When specified, it is an 8-bit matrix of the same size as <paramref name="trainData"/>, is used to mark the missed values (non-zero elements of the mask)</param>
/// <param name="param">The parameters for training the boost tree</param>
/// <param name="update">specifies whether the classifier needs to be updated (i.e. the new weak tree classifiers added to the existing ensemble), or the classifier needs to be rebuilt from scratch</param>
/// <returns></returns>
public bool Train(
Matrix<float> trainData,
MlEnum.DATA_LAYOUT_TYPE tflag,
Matrix<float> responses,
Matrix<Byte> varIdx,
Matrix<Byte> sampleIdx,
Matrix<Byte> varType,
Matrix<Byte> missingMask,
MCvBoostParams param,
bool update)
{
return MlInvoke.CvBoostTrain(
_ptr,
trainData.Ptr,
tflag,
responses.Ptr,
varIdx == null ? IntPtr.Zero : varIdx.Ptr,
sampleIdx == null ? IntPtr.Zero : sampleIdx.Ptr,
varType == null ? IntPtr.Zero : varType.Ptr,
missingMask == null ? IntPtr.Zero : missingMask.Ptr,
param,
update);
}
public static extern bool CvBoostTrain(
IntPtr model,
IntPtr trainData,
MlEnum.DATA_LAYOUT_TYPE tFlag,
IntPtr responses,
IntPtr varIdx,
IntPtr sampleIdx,
IntPtr varType,
IntPtr missingMask,
MCvBoostParams param,
[MarshalAs(UnmanagedType.I1)]
bool update);