把問題寫成數學的模式 Let a ijk be a 0-1 variable define as follows a ijk ={ 1, if type A sensor is placed at grid point (i,j,k) 0, otherwise } b ijk ={ 1, if type B sensor is placed at grid point (i,j,k) 0, otherwise } => C : total cost i=1j=1k=1 nxnx nyny nznz C= Σ Σ Σ ( C A a ijk +C B b ijk )
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