actually u have to define each one in the sets section and after that make a link between them for ex:

i;

j;

k;

m;

link(i,j,k,m):f;

Thank you Dr.Dina for your reply

i; the parts set(i=1,2,3,....P)

j; the route of each part set (j=1,2,3,....R)

m,k; the machine set(m=1,2,3,....M) , m~=k

f; frequency (number)of times that part i of route j transfer from machine m to machine k

 Your welcome and please if you find anyone know lingo well

i would appreciate if you correct my syntax 

can anyone correct my syntax plzz for this equations

M=@SUM(speciality(i):@sum(priority,type_of_patient(j,k):Y(i,j,k))*(@exp(mu(i)*@sqrt(sigma))));

V=@SUM(speciality(i):@sum(priority,type_of_patient(j,k):Y(i,j,k))*(@exp(sigma(i))-1)*(@exp(2*mu(i)+sigma(i))));

Hello Researchers , actually I need someone who interested to help me to make a code for this equation on lingo programming - ResearchGate. Available from: https://www.researchgate.net/post/Hello_Researchers_actually_I_need_someone_who_interested_to_help_me_to_make_a_code_for_this_equation_on_lingo_programming [accessed Feb 27, 2017].

ok, i will do

but i am still not understanding how to write it in lingo

Thanks again

Dear Eng Hamida,

Based on my understanding, the following is the answer of your question:

!-----------------------------------

sets:

i/1..3/:ii;

j/1..3/:jj;

m/1..3/:kk;

ff(i,j,m,k):f;

endsets

data:

ii=1,1,2;

jj=1,1,1;

mm=1,1,1;

kk=1,2,2;

enddata

f(1,1,1,1)=2;

f(1,1,1,2)=2;

f(2,1,1,2)=2;

!----------------------------------

Best Wishes

Thank you Dr.Mahmoud Heshmat

but i think it will take along time to do especially in large size problem

Please could you have alook in the original paper, my problem is that writing parameters that more than two dimension such cijm or fijmk

Thanks in advance

Well. In that case, I recommend using CPLEX

What difference between lingo and cplex

Thanks Eng. Mahmoud for your reply

I am very surprised many researcher did not know the simple and important information of LINDO products.

1. Demo version, manuals and Linus textbooks are free. If English speakers read those book, you can understand the Set expression and others. If you can understand Japanese, see my announcement of DEA, Cancer Gene Diagnosis, several translations and original two books.

2. Linus reviewed many papers and books. He made over 500 sample models. I need not survey the papers and develop new approach about DEA model by modification of sample DEA.

3. Linus explains many sample models. Data are defined in Data section. But, you define those data on Excel. You can read it by @OLE function and output Excel. If you must a big data, you choose the DB.

4. I developed “100-fold cross validation for small sample method and Matryoshka Feature Selection method for microarray datasets.” See the Chap.2 and Chap.9 of my Springer book (2016).

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