| 摘要 |
PROBLEM TO BE SOLVED: To provide a deterioration evaluator and a deterioration evaluation method for evaluating the deterioration process of an object, including unobservable or hard-to-observe heterogeneous factors. SOLUTION: When the state of soundness determined by an administrator having inspected a plurality of objects is inputted through an input device, a data-receiving part 10 is used to receive it as inspection data. A deterioration characteristic calculating part 12 is used to calculate the average value Aveθ<SP>k</SP><SB>i</SB>of the deterioration characteristicsθ<SB>i</SB>(1<SB>k</SB>) of the object, based on the data on the soundness of the plurality of objects received by the receiving part 10. A heterogeneity parameter calculating part 16 is used to calculate a heterogeneity parameterε<SP>k</SP>for each of the unobservable or hard-to-observe heterogeneous factors, causing deviation in the deterioration characteristicsθ<SB>i</SB>(1<SB>k</SB>). A benchmark part 18 is used to evaluate the effect of the heterogeneous factors on the deterioration characteristics by using the heterogeneity parameters, while an output part 20 outputs the evaluation results. COPYRIGHT: (C)2009,JPO&INPIT
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