| 摘要 |
The invention relates to a method whereby the average costs CNDD for each unidentified overlap in a distribution and sorting process and the average costs CRF for the renewed sorting and distribution of each identified overlapped item of mail are determined. Before the sorting operation, the identification rate DR(Pi) of the detector is determined at different workin g points according to an adjusting parameter Pi. During the sorting operation, the respective actual overlap rate DFR'(Pi) of the sorting machine is estimated, for defined time intervals, from the identification result, the identification rate DR(Pi) and the error rate ER(Pi), according to the adjusting parameters Pi. The actual adjusting parameter Popt with the greate st utility CB'(Popt), which is used to operate the detector until the next interval, is determined by optimisation calculations from the relation for t he utility CB'(Pi) of the sorting and distribution process CB'(Pi) = N{( DFR'(Pi)*DR(Pi)*(CNDD-CRF)) - (ER(Pi)*CRF*(1-DFR'(Pi)))} for the operator.</ SDOAB>
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