F# Microsoft Solver Foundation - NelderMeadSolver 类

发布于 2025-01-07 02:10:49 字数 375 浏览 0 评论 0原文

谁能向我展示在 F# 中使用 NelderMeadSolver 类的示例代码？

例如，我想最小化以下函数： F(X, Y)

F = (X-1)^2 + (y-1)^2 其中 0< X＜ 2 , 0＜ Y＜ 2 答案显然是 X = 1, Y = 1

我找到了 C# 的示例：
http://msdn.microsoft.com/en- us/library/hh404040(v=VS.93).aspx

如果有人能给我简单的 F# 代码来最小化上述函数，我将非常感激。谢谢。

原文

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

南七夏 2025-01-14 02:10:49

我以前从未使用过 Solver Foundation，但这里有一个来自 MSDN 中的 C# 示例（适应您的优化功能）：

open System
open Microsoft.SolverFoundation.Common
open Microsoft.SolverFoundation.Solvers

let xInitial = [| 0.; 0. |]
let xLower = [| 0.; 0. |]
let xUpper = [| 2.; 2. |]

let sqr x = x * x

let solution = 
   NelderMeadSolver.Solve(
      Func<float [], _>(fun xs -> sqr(xs.[0] - 1.) + sqr(xs.[1] - 1.)), 
      xInitial, xLower, xUpper)

printfn "%A" solution.Result
printfn "solution = %A" (solution.GetSolutionValue 0)
printfn "x = %A" (solution.GetValue 1)
printfn "y = %A" (solution.GetValue 2)

您应该能够添加 Solver Foundation 的引用并构建程序。如果您在 F# Interactive 中使用代码，请记住通过引用 Solver Foundation 的 dll 文件的确切路径来添加它们。

I've never used Solver Foundation before, but here is a straightforward translation from C# example in MSDN (adapted to your optimization function):

open System
open Microsoft.SolverFoundation.Common
open Microsoft.SolverFoundation.Solvers

let xInitial = [| 0.; 0. |]
let xLower = [| 0.; 0. |]
let xUpper = [| 2.; 2. |]

let sqr x = x * x

let solution = 
   NelderMeadSolver.Solve(
      Func<float [], _>(fun xs -> sqr(xs.[0] - 1.) + sqr(xs.[1] - 1.)), 
      xInitial, xLower, xUpper)

printfn "%A" solution.Result
printfn "solution = %A" (solution.GetSolutionValue 0)
printfn "x = %A" (solution.GetValue 1)
printfn "y = %A" (solution.GetValue 2)

You should be able to add Solver Foundation's references and build the program. If you use the code in F# Interactive, remember to add Solver Foundation's dll files by referencing their exact paths.

回复收藏 0 原文

~没有更多了~