相关疑难解决方法(0)

我在这里查看cs文件:https: //www.microsoft.com/net/learn/apps/machine-learning-and-ai/ml-dotnet/get-started/windows 并尝试翻译它到F#它编译得很好但是System.Reflection.TargetInvocationException在运行时抛出:FormatException: One of the identified items was in an invalid format.我错过了什么？

编辑:之前使用的是记录

open Microsoft.ML
open Microsoft.ML.Runtime.Api
open Microsoft.ML.Trainers
open Microsoft.ML.Transforms
open System

type IrisData = 
    [<Column("0")>] val mutable SepalLength : float
    [<Column("1")>] val mutable SepalWidth : float
    [<Column("2")>] val mutable PetalLength : float
    [<Column("3")>] val mutable PetalWidth : float
    [<Column("4");ColumnName("Label")>] val mutable Label : string

    new(sepLen, sepWid, petLen, petWid, label) = 
        { SepalLength = sepLen
          SepalWidth = sepWid
          PetalLength = petLen
          PetalWidth …