... fluctuation range of the index. To forecast natural gas production, a matrixed Fourier grey Bernoulli model (MFGBM(1,1)) is proposed. Design/methodology/approach To reduce the seasonal volatility of the series, seasonal factors are incorporated into the weighted accumulative generation operator...

... characteristics. A seasonal weighted fractional nonlinear grey model for triangular fuzzy number series is established based on the grey Bernoulli model by introducing the seasonal weighted fractional accumulation generating operator. Design/methodology/approach First, the actual sequence is processed using...

...Shuai Huang; Lihua Ning; Jiayi An; Youfan Wang; Yiyang Wang Purpose The traditional grey Bernoulli model often faces limitations when applied to pollutant concentration series, which may exhibit complex seasonal trends and varying data types. To address these challenges, we propose a structural...

... nonlinear exponential grey Bernoulli model combined with an exponential accumulation generating operator (MNEGBM(1,1)) is proposed in this paper. Design/methodology/approach First, the original sequence is processed by the exponential accumulation generating operator to weaken its volatility...