The input-oriented model is formulated as follows: θ

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The input-oriented model is formulated as follows: θ. ∗. = min θ subject to n. ∑ j=1 λjxij ≤ θxi0 i = 1, ...., m n. ∑ j=1 λjyrj ≥ yr0 r = 1, ...., s n. ∑ j=1 λj = 1 λj = 0 if Zj ...
The input-oriented model is formulated as follows: θ∗ = min θ subject to n X

λj xij ≤ θxi0

i = 1, ...., m

j=1 n X

λj yrj ≥ yr0

r = 1, ...., s

j=1 n X

λj = 1

j=1

λj = 0 if Zj > Z0 λj ≥ 0,

j = 1, ...., n

j = 1, ...., n

1

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