Question

提前感谢您的回复，本论坛的答案在我的研究中非常宝贵。我是学生学习F＃，用于语言范例的研究项目，并试图利用http://trelford.com/blog/post/specialk.aspx中的一个神话般的例子，以便使用简单的k-means算法。我收到一个错误我不知道如何修复，并希望得到一些指导。很多Oblaged，以下是代码和错误：在行上获得缺少资格错误。`Petal Width |]）行

//代码来自http://trelford.com/blog/post/specialk.aspx

open System
open FSharp

type Iris = CsvProvider<irisDataFile>
let iris = Iris.Load(irisDataFile)
let irisData = iris.Data |> Seq.toArray
//
///// classifcations
let y = irisData |> Array.map (fun row -> row.Class)
/// feature vectors
let X = irisData |> Array.map (fun row -> 
  [|row.``Sepal Length`` 
    row.``Sepal Width`` 
    row.``Petal Length`` 
    row.``Petal Width`|])


//Computing k-means centroids:

let K = 3 // The Iris dataset is known to only have 3 clusters

let seed = 
  [|X.[0]; X.[1]; X.[2]|]  // pick bad centroids on purpose

let centroidResults = 
  KMeans.computeCentroids seed X |> Seq.take iterationLimit



(* K-Means Algorithm *)

/// Group all the vectors by the nearest center. 
let classify centroids vectors = 
  vectors |> Array.groupBy (fun v -> centroids |> Array.minBy (distance v))

/// Repeatedly classify the vectors, starting with the seed centroids
let computeCentroids seed vectors = 
  seed |> Seq.iterate (fun centers -> classify centers vectors |> Array.map (snd >> average))

Answer 1

看起来你在这里错过了一个回答：

row.``Petal Width`|])

应该是：

row.``Petal Width``|])

行上缺少资格错误.`Petal Width` |]）行

1 个答案: