public void Reads()
{
string path;
float[][] imagesData;
int[] labels;
const int nExamples = 10;
CreateUSPSFile(out path, out imagesData, out labels, nExamples);
using (USPSDatasetReader reader = new USPSDatasetReader(path))
{
for (int i = 0; i < nExamples; ++i)
{
Assert.True(reader.HasNext(), "Reader should not be at the end");
IExample refExample = new NormalizedExample(imagesData[i], labels[i]);
IExample readExample = reader.ReadNext();
Assert.True(Enumerable.SequenceEqual(refExample.Input, readExample.Input), "Written and read image data should be the same");
Assert.True(refExample.Target == readExample.Target, "Written and read labels should be the same");
}
Assert.False(reader.HasNext(), "Reader should be at the end");
}
File.Delete(path);
}
public void Reads()
{
string[] paths;
byte[][] imagesData;
int[] labels;
const int nFiles = 3;
const int nExamplesPerFile = 4;
const int nExamples = nFiles * nExamplesPerFile;
CreateCIFAR10Files(out paths, out imagesData, out labels, nFiles, nExamplesPerFile);
using (CIFAR10DatasetReader reader = new CIFAR10DatasetReader(paths))
{
for (int i = 0; i < nExamples; ++i)
{
Assert.True(reader.HasNext(), "Reader should not be at the end");
IExample refExample = new NormalizedExample(imagesData[i], labels[i]);
IExample readExample = reader.ReadNext();
Assert.True(Enumerable.SequenceEqual(refExample.Input, readExample.Input), "Written and read image data should be the same");
Assert.True(refExample.Target == readExample.Target, "Written and read labels should be the same");
}
Assert.False(reader.HasNext(), "Reader should be at the end");
}
foreach (string path in paths)
{
File.Delete(path);
}
}
public void NormalizesFromBytes()
{
byte[] data = new byte[DataLen];
int label = m_rand.Next();
m_rand.NextBytes(data);
IExample example = new NormalizedExample(data, label);
Assert.StrictEqual(example.Target, label);
Assert.Equal(example.Input.Min(), 0, Precision);
Assert.Equal(example.Input.Max(), 1, Precision);
}
public void NormalizesFromFloats()
{
float[] data = new float[DataLen];
int label = m_rand.Next();
float multBy = m_rand.Next(1024);
for (int i = 0; i < DataLen; ++i)
{
data[i] = (float)m_rand.NextDouble() * multBy;
}
IExample example = new NormalizedExample(data, label);
Assert.StrictEqual(example.Target, label);
Assert.Equal(example.Input.Min(), 0, Precision);
Assert.Equal(example.Input.Max(), 1, Precision);
}
