public State(IExceptionContext ectx, Row input, TreeEnsembleModelParameters ensemble, int numLeaves, int featureIndex)
{
Contracts.AssertValue(ectx);
_ectx = ectx;
_ectx.AssertValue(input);
_ectx.AssertValue(ensemble);
_ectx.Assert(ensemble.TrainedEnsemble.NumTrees > 0);
_input = input;
_ensemble = ensemble;
_numTrees = _ensemble.TrainedEnsemble.NumTrees;
_numLeaves = numLeaves;
_src = default(VBuffer <float>);
_featureGetter = input.GetGetter <VBuffer <float> >(featureIndex);
_cachedPosition = -1;
_leafIds = new int[_numTrees];
_pathIds = new List <int> [_numTrees];
for (int i = 0; i < _numTrees; i++)
{
_pathIds[i] = new List <int>();
}
_cachedLeafBuilderPosition = -1;
_cachedPathBuilderPosition = -1;
}
private static float GetLeafValue(TreeEnsembleModelParameters model, int treeId, int leafId)
{
return((float)_getLeafValueMethod.Invoke(model, new object[] { treeId, leafId }));
}
private static int GetLeaf(TreeEnsembleModelParameters model, int treeId, VBuffer <Float> features)
{
List <int> path = null;
return((int)_getLeafMethod.Invoke(model, new object[] { treeId, features, path }));
}
internal PretrainedTreeFeaturizationEstimator(IHostEnvironment env, Options options) : base(env, options)
{
_modelParameters = options.ModelParameters;
}