public void ReadWriteTest_a9a()
{
string basePath = NUnit.Framework.TestContext.CurrentContext.TestDirectory;
MemoryStream file = new MemoryStream(Encoding.Default.GetBytes(Resources.L1R_LR_a9a));
LibSvmModel model1 = LibSvmModel.Load(file);
string savePath = Path.Combine(basePath, "svm.txt");
var svm1 = model1.CreateMachine();
model1.Save(savePath);
LibSvmModel model2 = LibSvmModel.Load(savePath);
var svm2 = model2.CreateMachine();
LibSvmModel model3 = LibSvmModel.FromMachine(svm1);
var svm3 = model3.CreateMachine();
model3.Solver = LibSvmSolverType.L1RegularizedLogisticRegression;
string aPath = Path.Combine(basePath, "a.txt");
string bPath = Path.Combine(basePath, "b.txt");
string cPath = Path.Combine(basePath, "c.txt");
model1.Save(aPath);
model2.Save(bPath);
model3.Save(cPath);
string a = File.ReadAllText(aPath);
string b = File.ReadAllText(bPath);
string c = File.ReadAllText(cPath);
Assert.AreEqual(a, b);
Assert.AreEqual(a, c);
Assert.AreEqual(svm1.Weights, svm2.Weights);
Assert.AreEqual(svm1.SupportVectors, svm2.SupportVectors);
Assert.AreEqual(svm1.Threshold, svm2.Threshold);
Assert.AreEqual(svm1.Weights, svm3.Weights);
Assert.AreEqual(svm1.SupportVectors, svm3.SupportVectors);
Assert.AreEqual(svm1.Threshold, svm3.Threshold);
}
public void WriteLinearMachineTest()
{
MemoryStream destination = new MemoryStream();
var model = new LibSvmModel()
{
Bias = -1,
Classes = 2,
Dimension = 123,
Labels = new[] { +1, -1 },
Solver = LibSvmSolverType.L1RegularizedLogisticRegression,
Weights = a9a_weights
};
model.Save(destination);
destination.Seek(0, SeekOrigin.Begin);
TextReader textReader = new StreamReader(destination);
string[] actual = textReader.ReadToEnd()
.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
string[] expected = Resources.L1R_LR_a9a
.Split(new[] { "\r\n" }, StringSplitOptions.None);
Assert.AreEqual(expected.Length, actual.Length);
for (int i = 0; i < 7; i++)
{
Assert.AreEqual(expected[i], actual[i]);
}
for (int i = 6; i < expected.Length; i++)
{
if (expected[i] == actual[i])
{
continue;
}
double a = Double.Parse(expected[i], CultureInfo.InvariantCulture);
double b = Double.Parse(actual[i], CultureInfo.InvariantCulture);
Assert.AreEqual(a, b);
}
Assert.AreEqual(expected[expected.Length - 1], String.Empty);
}
public void WriteLinearMachineTest_ExactCopy()
{
MemoryStream file = new MemoryStream(
Encoding.Default.GetBytes(Resources.L1R_LR_a9a));
LibSvmModel reader = LibSvmModel.Load(file);
MemoryStream destination = new MemoryStream();
reader.Save(destination);
destination.Seek(0, SeekOrigin.Begin);
TextReader textReader = new StreamReader(destination);
string[] actual = textReader.ReadToEnd()
.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
string[] expected = Resources.L1R_LR_a9a
.Split(new[] { "\r\n" }, StringSplitOptions.None);
Assert.AreEqual(expected.Length, actual.Length);
for (int i = 0; i < 7; i++)
{
Assert.AreEqual(expected[i], actual[i]);
}
for (int i = 6; i < expected.Length; i++)
{
if (expected[i] == actual[i])
{
continue;
}
double a = Double.Parse(expected[i], CultureInfo.InvariantCulture);
double b = Double.Parse(actual[i], CultureInfo.InvariantCulture);
Assert.AreEqual(a, b);
}
Assert.AreEqual(expected[expected.Length - 1], String.Empty);
}