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Binary linear programming

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Binary linear programming

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How can I write the following binary linear programming model under proc iml?

min. z=sum in i and sum in j (xij*dij), where dij is given

s.t.

sum in j (xij)=1 , for i=1...n

sum in j (xjj)=m

n*xjj>=sum in i (xij), for j=1..n

xij is either 0 or 1

where n,m are given

 

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