ValueMapper <TSrc, TDst> GetMapperWithTransform <TSrc, TMiddle, TDst>(IDataTransform trans)
{
var mapperPreVM = new ValueMapperFromTransformFloat <TMiddle>(_host, trans, _inputColumn, _inputColumn, trans.Source);
var mapperPre = mapperPreVM.GetMapper <TSrc, TMiddle>();
var mapperPred = (_predictor as IValueMapper).GetMapper <TMiddle, TDst>();
TMiddle middle = default(TMiddle);
return((in TSrc src, ref TDst dst) =>
{
mapperPre(in src, ref middle);
mapperPred(in middle, ref dst);
});
public ValueMapperExample(string modelName, string features)
{
_env = EnvHelper.NewTestEnvironment();
_predictor = ModelFileUtils.LoadPredictorOrNull(_env, File.OpenRead(modelName));
var inputs = new Input[0];
var view = DataViewConstructionUtils.CreateFromEnumerable(_env, inputs);
_transforms = ModelFileUtils.LoadTransforms(_env, view, File.OpenRead(modelName));
var data = _env.CreateExamples(_transforms, features);
var scorer = _env.CreateDefaultScorer(data, _predictor);
_valueMapper = new ValueMapperFromTransformFloat <VBuffer <float> >(_env, scorer, "Features", "Probability");
_mapper = _valueMapper.GetMapper <VBuffer <float>, float>();
}
public ValueMapperExample(string modelName, string features)
{
_env = EnvHelper.NewTestEnvironment();
_predictor = _env.LoadPredictorOrNull(File.OpenRead(modelName));
var inputs = new Input[0];
var view = _env.CreateStreamingDataView <Input>(inputs);
_transforms = ComponentCreation.LoadTransforms(_env, File.OpenRead(modelName), view);
var data = _env.CreateExamples(_transforms, features);
var scorer = _env.CreateDefaultScorer(data, _predictor);
_valueMapper = new ValueMapperFromTransformFloat <VBuffer <float> >(_env, scorer, "Features", "Probability");
_mapper = _valueMapper.GetMapper <VBuffer <float>, float>();
}
public void TestTransform2ValueMapperMultiThread()
{
/*using (*/
var env = EnvHelper.NewTestEnvironment();
{
var host = env.Register("unittest");
var inputs = new[] {
new InputOutput {
X = new float[] { 0, 1 }, Y = 10
},
new InputOutput {
X = new float[] { 2, 3 }, Y = 100
}
};
var data = DataViewConstructionUtils.CreateFromEnumerable(host, inputs);
var trv = ExtLambdaTransform.CreateMap(host, data,
(InputOutput src, InputOutput dst, EnvHelper.EmptyState state) =>
{
dst.X = new float[] { src.X[0] + 1f, src.X[1] - 1f };
}, (EnvHelper.EmptyState state) => { });
var ino = new InputOutput {
X = new float[] { -5, -5 }, Y = 3
};
var inob = new VBuffer <float>(2, ino.X);
var ans = new VBuffer <float>();
using (var valueMapper = new ValueMapperFromTransformFloat <VBuffer <float> >(host, trv, "X", "X", ignoreOtherColumn: true))
{
var mapper = valueMapper.GetMapper <VBuffer <float>, VBuffer <float> >();
var listy = new List <int>();
var listx = new List <float>();
int y = 0;
for (int i = 0; i < inputs.Length; ++i)
{
mapper(in inob, ref ans);
y = inputs[i].Y;
if (ans.Count != 2)
{
throw new Exception("Issue with dimension.");
}
listx.AddRange(ans.GetValues().ToArray());
listy.Add((int)y);
}
if (listy.Count != 2)
{
throw new Exception("Issue with dimension.");
}
if (listy[0] != 10 || listy[1] != 100)
{
throw new Exception("Issue with values.");
}
if (listx.Count != 4)
{
throw new Exception("Issue with dimension.");
}
if (listx[0] != -4)
{
throw new Exception("Issue with values.");
}
if (listx[1] != -6)
{
throw new Exception("Issue with values.");
}
if (listx[2] != -4)
{
throw new Exception("Issue with values.");
}
if (listx[3] != -6)
{
throw new Exception("Issue with values.");
}
if (inob.Count != 2)
{
throw new Exception("Issue with dimension.");
}
if (inob.Values[0] != -5)
{
throw new Exception("Values were overwritten.");
}
if (inob.Values[0] != -5)
{
throw new Exception("Values were overwritten.");
}
}
}
}
public void TestTransform2ValueMapperSingleThread()
{
using (var env = EnvHelper.NewTestEnvironment(conc: 1))
{
var host = env.Register("unittest");
var inputs = new[] {
new InputOutput {
X = new float[] { 0, 1 }, Y = 10
},
new InputOutput {
X = new float[] { 2, 3 }, Y = 100
}
};
var data = host.CreateStreamingDataView(inputs);
var trv = LambdaTransform.CreateMap(host, data,
(InputOutput src, InputOutput2 dst, EnvHelper.EmptyState state) =>
{
dst.X2 = new float[] { src.X[0] + 1f, src.X[1] - 1f };
}, (state) => { });
var inos = new InputOutput[] { new InputOutput {
X = new float[] { -5, -5 }, Y = 3
},
new InputOutput {
X = new float[] { -6, -6 }, Y = 30
} };
var ans = new VBuffer <float>();
using (var valueMapper = new ValueMapperFromTransformFloat <VBuffer <float> >(host, trv, "X", "X2", ignoreOtherColumn: true))
{
var mapper = valueMapper.GetMapper <VBuffer <float>, VBuffer <float> >();
var listy = new List <int>();
var listx = new List <float>();
int y = 0;
int tour = 0;
for (int i = 0; i < inputs.Length; ++i)
{
var temp = new VBuffer <float>(2, inos[tour++].X);
mapper(in temp, ref ans);
y = inputs[i].Y;
if (ans.Count != 2)
{
throw new Exception("Issue with dimension.");
}
listx.AddRange(ans.GetValues().ToArray());
listy.Add((int)y);
}
if (listy.Count != 2)
{
throw new Exception("Issue with dimension.");
}
if (listy[0] != 10 || listy[1] != 100)
{
throw new Exception("Issue with values.");
}
if (listx.Count != 4)
{
throw new Exception("Issue with dimension.");
}
if (listx[0] != -4)
{
throw new Exception("Issue with values.");
}
if (listx[1] != -6)
{
throw new Exception("Issue with values.");
}
if (listx[2] != -5)
{
throw new Exception("Issue with values.");
}
if (listx[3] != -7)
{
throw new Exception("Issue with values.");
}
}
}
}