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R：定义优化问题构造函数OP（包ROI）的边界。UseMethod中的错误（“as.V”bound）

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R：定义优化问题构造函数OP（包ROI）的边界。UseMethod中的错误（“as.V”bound）,r,optimization,r-optimization,R,Optimization,R Optimization,我想在使用ROI包进行优化时为变量定义边界。我使用OP函数来构造优化问题对象 默认值为：下限等于零，上限等于+无穷大 下面是一个运行良好的示例代码： LP <- OP( c(2, 4, 3), L_constraint(L = matrix(c(3, 2, 1, 4, 1, 3, 2, 2, 2), nrow = 3), dir = c("<=", "<=", "<="), rhs =

我想在使用ROI包进行优化时为变量定义边界。我使用OP函数来构造优化问题对象

默认值为：下限等于零，上限等于+无穷大

下面是一个运行良好的示例代码：

LP <- OP( c(2, 4, 3),
      L_constraint(L = matrix(c(3, 2, 1, 4, 1, 3, 2, 2, 2), nrow = 3),
                   dir = c("<=", "<=", "<="),
                   rhs = c(60, 40, 80)),
      max = TRUE )

LP
LP

LP <- OP( c(2, 4, 3),
      L_constraint(L = matrix(c(3, 2, 1, 4, 1, 3, 2, 2, 2), nrow = 3),
                   dir = c("<=", "<=", "<="),
                   rhs = c(60, 40, 80)),
                    bounds = list(upper=c(100,100,100), lower=c(0,0,0)),
      max = TRUE )

Error in UseMethod("as.V_bound") : 
no applicable method for 'as.V_bound' applied to an object of class "list"



LP <- OP(c(2, 4, 3),
         L_constraint(L = matrix(c(3, 2, 1, 4, 1, 3, 2, 2, 2), nrow = 3),
                      dir = c("<=", "<=", "<="),
                      rhs = c(60, 40, 80)),
         bounds = V_bound(ui = seq_len(3), ub = rep.int(100, 3)),
         maximum = TRUE )