o.f =d(i)*r(i,j)*x(m)*z(m,c)
r and z are D.V
x not parameter it obtainted based on value of z
how can i solve it on lingo
thanks for your reply Dr. Mahmoud Hehmat... but how i calculate x based on value of z which is a decision variable
You can set the relation between x and z as a constraint and code it in Lingo.
yse, i found that i can use CALC and Submodel to do this. now i read to know how to apply them.
thanks 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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My answer is not proper.
Probably, you use only the basic LINGO that can solve LP. IP and QP.
If you wish to solve NLP, you must order NLP option.
You try it by free demo version.
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