why is my code wrong ?

Question

Bhavz 2014-10-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/159174-why-is-my-code-wrong

关闭： MATLAB Answer Bot 2021-8-20

Please see the files attached and let me know what is wrong with this

l_dp =

    0.7101         0         0    0.0447    0.7701         0    0.0379    0.8407
         0         0         0    1.5729    0.0635         0         0    0.5264
    1.1636    0.4907         0         0    0.2497         0    1.0603         0
         0         0    1.1273         0    0.1478         0         0    1.4100

and this not right since demand on a path should total to one ie the sum of each row should be 1

whats wrong with my code is it ub limit or what ?

Please do help

2 个评论
显示无隐藏无

Geoff Hayes 2014-10-19

Bhavz - where in your code do you force that condition (that each row should sum to one) to be true? Or where do you expect that to be enforced (and why)?

Bhavz 2014-10-19

编辑：Bhavz 2015-4-28

formulas.bmp

^ its not about enforcing the condition but shudnt the demand on a path total to one technically ... thats what the correct functioning wud be ? I am attaching the equation i want to implement constraint wise ,u can see if i have made a mistake there What I have done is taken the network optimization from paper 2 in the network from 1 and I am trying to measure the effect on link utilization. How would you change the given Algorithm to route unsplittable flows on the specified single primary path only

And as always thankyou so much for yr help

此问题已关闭。

Answer 1

Matt J 2014-10-19

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/159174-why-is-my-code-wrong#answer_155748

编辑：Matt J 2014-10-19

在 MATLAB Online 中打开

ie the sum of each row should be 1

If the unknown vector x is supposed to satisfy this, then presumably you need to have linear equality constraints,

   Aeq=kron(ones(1,8),eye(4));
   beq=[1;1;1;1]
   [x,fval,exitflag] = ga(@objectiveFun,... 
    32,[],[],Aeq,beq,lb,[],nonlcon,options);

6 个评论
显示 4更早的评论隐藏 4更早的评论

Bhavz 2014-10-19

编辑：Bhavz 2014-10-19

在 MATLAB Online 中打开

Oh How would I do that as in pass values from constraints.m to

   [x,fval,exitflag] = ga(@objectiveFun,... 
    32,[],[],Aeq,beq,lb,[],nonlcon,options);

Matt J 2014-10-19

编辑：Matt J 2014-10-19

You would not use the nonlinear constraint function to handle linear constraints. You would generate appropriate A, b matrices, similar to what I did for you with Aeq and beq.