本文整理汇总了C#中VowpalWabbit.ReadExample方法的典型用法代码示例。如果您正苦于以下问题：C# VowpalWabbit.ReadExample方法的具体用法？C# VowpalWabbit.ReadExample怎么用？C# VowpalWabbit.ReadExample使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类VowpalWabbit的用法示例。
在下文中一共展示了VowpalWabbit.ReadExample方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Test9
public void Test9()
{
var sampleData = TrainSetCs_testLdf.CreateSampleCbAdfData();
// # Test 9: label-dependent features with csoaa_ldf
//{VW} -k -c -d train-sets/cs_test.ldf -p cs_test.ldf.csoaa.predict --passes 10 --invariant --csoaa_ldf multiline --holdout_off
// train-sets/ref/cs_test.ldf.csoaa.stderr
// train-sets/ref/cs_test.ldf.csoaa.predict
using (var vw = new VowpalWabbit<Cs_TestData>("-k -c -p cs_test.ldf.csoaa.predict --passes 10 --invariant --csoaa_ldf multiline --holdout_off"))
{
foreach (var d in sampleData)
{
using (var ex = vw.ReadExample(d))
{
ex.Learn();
}
}
vw.RunMultiPass();
VWTestHelper.AssertEqual(@"train-sets\ref\cs_test.ldf.csoaa.stderr", vw.PerformanceStatistics);
}
Assert.AreEqual(
File.ReadAllText(@"train-sets\ref\cs_test.ldf.csoaa.predict"),
File.ReadAllText("cs_test.ldf.csoaa.predict"));
}示例2: TestExampleCache
public void TestExampleCache()
{
var random = new Random(123);
var examples = new List<CachedData>();
for (int i = 0; i < 1000; i++)
{
examples.Add(new CachedData
{
Label = new SimpleLabel { Label = 1 },
Feature = random.NextDouble()
});
}
for (int i = 0; i < 1000; i++)
{
var cachedData = new CachedData
{
Label = new SimpleLabel { Label = 2 },
Feature = 10 + random.NextDouble()
};
examples.Add(cachedData);
examples.Add(cachedData);
}
using (var vw = new VowpalWabbit<CachedData>("-k -c --passes 10", new VowpalWabbitSerializerSettings
{
EnableExampleCaching = false
}))
{
foreach (var example in examples)
{
using (var vwExample = vw.ReadExample(example))
{
vwExample.Learn();
}
}
vw.RunMultiPass();
vw.SaveModel("model1");
}
using (var vwModel = new VowpalWabbitModel("-t", File.OpenRead("model1")))
using (var vwCached = new VowpalWabbit<CachedData>(vwModel, new VowpalWabbitSerializerSettings { EnableExampleCaching = true, MaxExampleCacheSize = 5 }))
using (var vw = new VowpalWabbit<CachedData>(vwModel, new VowpalWabbitSerializerSettings { EnableExampleCaching = false }))
{
foreach (var example in examples)
{
using (var vwCachedExample = vwCached.ReadExample(example))
using (var vwExample = vw.ReadExample(example))
{
var cachedPrediction = vwCachedExample.Predict<VowpalWabbitScalarPrediction>();
var prediction = vwExample.Predict<VowpalWabbitScalarPrediction>();
Assert.AreEqual(prediction.Value, cachedPrediction.Value);
Assert.AreEqual(example.Label.Label, Math.Round(prediction.Value));
}
}
}
}示例3: TestExampleCacheDisabledForLearning
public void TestExampleCacheDisabledForLearning()
{
using (var vw = new VowpalWabbit<CachedData>(string.Empty, new VowpalWabbitSerializerSettings
{
EnableExampleCaching = false
}))
{
using (var example = vw.ReadExample(new CachedData()))
{
example.Learn();
}
}
}示例4: TestExampleCacheForLearning
public void TestExampleCacheForLearning()
{
using (var vw = new VowpalWabbit<CachedData>(string.Empty))
{
using (var example = vw.ReadExample(new CachedData()))
{
example.Learn();
}
}
}示例5: Test1and2
public void Test1and2()
{
var references = File.ReadAllLines(@"pred-sets\ref\0001.predict").Select(l => float.Parse(l, CultureInfo.InvariantCulture)).ToArray();
var input = new List<Test1>();
using (var vwStr = new VowpalWabbit(" -k -c test1and2.str --passes 8 -l 20 --power_t 1 --initial_t 128000 --ngram 3 --skips 1 --invariant --holdout_off"))
using (var vw = new VowpalWabbit<Test1>(" -k -c test1and2 --passes 8 -l 20 --power_t 1 --initial_t 128000 --ngram 3 --skips 1 --invariant --holdout_off"))
{
var lineNr = 0;
VWTestHelper.ParseInput(
File.OpenRead(@"train-sets\0001.dat"),
new MyListener(data =>
{
input.Add(data);
var expected = vwStr.Learn<VowpalWabbitScalarPrediction>(data.Line);
using (var example = vw.ReadExample(data))
{
var actual = example.LearnAndPredict<VowpalWabbitScalarPrediction>();
Assert.AreEqual(expected.Value, actual.Value, 1e-6, "Learn output differs on line: " + lineNr);
}
lineNr++;
}));
vwStr.RunMultiPass();
vw.RunMultiPass();
vwStr.SaveModel("models/str0001.model");
vw.SaveModel("models/0001.model");
VWTestHelper.AssertEqual(@"train-sets\ref\0001.stderr", vwStr.PerformanceStatistics);
VWTestHelper.AssertEqual(@"train-sets\ref\0001.stderr", vw.PerformanceStatistics);
}
Assert.AreEqual(input.Count, references.Length);
using (var vwModel = new VowpalWabbitModel("-k -t --invariant", File.OpenRead("models/0001.model")))
using (var vwInMemoryShared1 = new VowpalWabbit(vwModel))
using (var vwInMemoryShared2 = new VowpalWabbit<Test1>(vwModel))
using (var vwInMemory = new VowpalWabbit("-k -t --invariant", File.OpenRead("models/0001.model")))
using (var vwStr = new VowpalWabbit("-k -t -i models/str0001.model --invariant"))
using (var vw = new VowpalWabbit<Test1>("-k -t -i models/0001.model --invariant"))
{
for (var i = 0; i < input.Count; i++)
{
var actualStr = vwStr.Predict<VowpalWabbitScalarPrediction>(input[i].Line);
var actualShared1 = vwInMemoryShared1.Predict<VowpalWabbitScalarPrediction>(input[i].Line);
var actualInMemory = vwInMemory.Predict<VowpalWabbitScalarPrediction>(input[i].Line);
using (var example = vw.ReadExample(input[i]))
using (var exampleInMemory2 = vwInMemoryShared2.ReadExample(input[i]))
{
var actual = example.Predict<VowpalWabbitScalarPrediction>();
var actualShared2 = exampleInMemory2.Predict<VowpalWabbitScalarPrediction>();
Assert.AreEqual(references[i], actualStr.Value, 1e-5);
Assert.AreEqual(references[i], actualShared1.Value, 1e-5);
Assert.AreEqual(references[i], actualInMemory.Value, 1e-5);
Assert.AreEqual(references[i], actual.Value, 1e-5);
Assert.AreEqual(references[i], actualShared2.Value, 1e-5);
}
}
// VWTestHelper.AssertEqual(@"test-sets\ref\0001.stderr", vwInMemoryShared2.PerformanceStatistics);
//VWTestHelper.AssertEqual(@"test-sets\ref\0001.stderr", vwInMemoryShared1.PerformanceStatistics);
VWTestHelper.AssertEqual(@"test-sets\ref\0001.stderr", vwInMemory.PerformanceStatistics);
VWTestHelper.AssertEqual(@"test-sets\ref\0001.stderr", vwStr.PerformanceStatistics);
VWTestHelper.AssertEqual(@"test-sets\ref\0001.stderr", vw.PerformanceStatistics);
}
}