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标题: 为什么LINGO的精度偏差大 [打印本页]

作者: 82197982 时间: 2024-10-31 14:49
标题: 为什么LINGO的精度偏差大
min=(y*b-x*a)^2+y^2*c^2+(b+(1-z)*(a-b)-x*a)^2+z^2*c^2+(b+(1-z)*(a-b)-y*b)^2+(z*c-y*c)^2;
a=16;b=14;c=12;

  LINGO/WIN64 21.0.33 (29 May 2024), LINDO API 15.0.6099.171

  Licensee info: Eval Use Only
  License expires:  6 APR 2025

  Global optimal solution found.
  Objective value:                            148.6452
  Infeasibilities:                            0.000000
  Total solver iterations:                            5
  Elapsed runtime seconds:                         0.92
  Model is convex quadratic

  Model Class:                                     QP

  Total variables:                   3
  Nonlinear variables:                3
  Integer variables:                   0

  Total constraints:                   1
  Nonlinear constraints:             1

  Total nonzeros:                      3
  Nonlinear nonzeros:                6

                              Variable          Value       Reduced Cost
                                    Y    0.6451613          0.2550979E-07
                                    B       14.00000          0.000000
                                    X    0.7580645       -0.6827543E-07
                                    A       16.00000          0.000000
                                    C       12.00000          0.000000
                                    Z    0.3870968          0.1606168E-08

                                 Row Slack or Surplus    Dual Price
                                    1       148.6452          -1.000000
                                    2       0.000000          -11.38837
                                    3       0.000000          4.794851
                                    4       0.000000          -15.18434

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