基于组合赋权的煤矿自然状况风险评价

Risk Assessment of Coal Mine Natural Condition Based on Combined Weighting

合理的指标赋权对评价结果有着极为重要的影响。目前在煤矿风险评价方面应用较多的指标赋权方法有主观赋权法和客观赋权法。主观赋权体现了指标的价值量,即实际意义;客观赋权体现了指标的信息量,即变异与相关。近年来,组合赋权方法得到了很大的重视。基于最小二乘的主客观赋权方法结合了主观赋权法和客观赋权法的优点,使指标赋权达到了主观与客观的统一,价值量与信息量的统一。在对煤矿的自然状况进行风险评价时,采用这种组合赋权方法得到的权重分配向量使评价结果更趋于科学、客观。

A reasonable index weighting is quite important for the result of evaluation.There are subjective weighting methods and objective weighting methods which are used frequently these days.Subjective weighting reflects the value of the indexes,that is meaningfulness,objective weighting reflects the amount of information,that is variation and correlation.In recent years,the combined weighting methods have been paid more attention.The weighting method based on Least Square has advantages of both subjective weighting methods and objective weighting methods,making index weighting reach the unity of subjective and objective,the unity of the value and the amount of information.The result of evaluation obtained by using the combined weighting method is more scientific and objective in the risk assessment of the natural condition of coal mine.