[1] [1] ZIO E.Reliability engineering: old problems and new challenges［J］.Reliability Engineering and System Safety, 2009, 94: 125-141.

[2] [2] WU L F, LIU S F, YAO L G, et al.The effect of sample size on the grey system model［J］.Applied Mathematical Modelling, 2013, 37(1): 6577-6583.

[6] [6] MARKOVIC D, JUKIC D, BENSIC M.Nonlinear weighted least squares estimation of a three-parameter Weibull density with a nonparametric start［J］.Journal of Computational and Applied Mathematics, 2009, 228(1): 304-312.

[7] [7] YANG F, YUE Z F.Kernel density estimation of three-parameter Weibull distribution with neural network and genetic algorithm［J］.Applied Mathematics and Computation, 2014, 247(1): 803-814.

[8] [8] DENG J L.Proving GM(1,1) modeling via four data(at least)［J］.Journal of Grey System, 2004, 16(1): 1-4.

[10] [10] XIE N M,LIU S F.Novel methods on comparing grey numbers［J］.Applied Mathematical Modelling, 2010, 34(2): 415-423.

[11] [11] HSU L C, WANG C H.Forecasting the output of integrated circuit industry using a grey model improved by the Bayesian analysis［J］.Technological Forecasting and Social Change, 2007, 74(6): 843-853.