Microsoft.ML-版本0.3.0-无法在10分钟内开始使用ML.NET

Question

我已按照（https://www.microsoft.com/net/learn/apps/machine-learning-and-ai/ml-dotnet/get-started/windows）中提供的步骤在10分钟内开始使用ML.NET。

但是在运行应用程序时。控制台正在通过以下运行时错误。

Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.FormatException: Parsing failed with an exception: Stream reading encountered exception ---> System.FormatException: Stream reading encountered exception ---> System.IO.FileNotFoundException: Could not find file 'C:\XXXX\MLNetExampleA\iris-data.txt'.
   at System.IO.FileStream.OpenHandle(FileMode mode, FileShare share, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   at Microsoft.ML.Runtime.SimpleFileHandle.OpenReadStream()
   at Microsoft.ML.Runtime.Data.FileHandleSource.OpenTextReader(Int32 index)
   at Microsoft.ML.Runtime.Data.TextLoader.Cursor.LineReader.ThreadProc()
   --- End of inner exception stack trace ---
   at Microsoft.ML.Runtime.Data.TextLoader.Cursor.LineReader.GetBatch()
   at Microsoft.ML.Runtime.Data.TextLoader.Cursor.ParallelState.Parse(Int32 tid)
   at Microsoft.ML.Runtime.Data.TextLoader.Cursor.ParallelState.ThreadProc(Object obj)
   --- End of inner exception stack trace ---
   at Microsoft.ML.Runtime.Data.TextLoader.Cursor.<ParseParallel>d__33.MoveNext()
   at Microsoft.ML.Runtime.Data.TextLoader.Cursor.MoveNextCore()
   at Microsoft.ML.Runtime.Data.RootCursorBase.MoveNext()
   at Microsoft.ML.Runtime.Data.TermTransform.Train(IHostEnvironment env, IChannel ch, ColInfo[] infos, ArgumentsBase args, ColumnBase[] column, IDataView trainingData)
   at Microsoft.ML.Runtime.Data.TermTransform..ctor(ArgumentsBase args, ColumnBase[] column, IHostEnvironment env, IDataView input)
   at Microsoft.ML.Runtime.Data.TermTransform..ctor(IHostEnvironment env, Arguments args, IDataView input)
   at Microsoft.ML.Runtime.Transforms.TextAnalytics.TermTransform(IHostEnvironment env, Arguments input)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at Microsoft.ML.Runtime.EntryPoints.EntryPointNode.Run()
   at Microsoft.ML.Runtime.EntryPoints.EntryPointGraph.RunNode(EntryPointNode node)
   at Microsoft.ML.Runtime.EntryPoints.JsonUtils.GraphRunner.RunAllNonMacros()
   at Microsoft.ML.Runtime.EntryPoints.JsonUtils.GraphRunner.RunAll()
   at Microsoft.ML.LearningPipeline.Train[TInput,TOutput]()
   at MLNetExampleA.Program.Main(String[] args) in C:\XXXX\MLNetExampleA\Program.cs:line 70

Answer 1

错误表明

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您是否遵循并验证了文件实际上已复制到输出文件夹？