scholarly journals Research and Application of a Novel Nonlinear Grey Bernoulli Simpson Model for Short-Term Coke Production Forecasting

Author(s):  
Yubin Cai ◽  
Lanxi Zhang

Aims: As a basic energy source, coal occupies a leading position in the production and consumption of energy. If a reasonable coal energy production policy is to be formulated, effective forecasting is essential. Due to the lack of data, effective prediction with small samples has become the key to research. Study Design: A nonlinear grey Bernoulli Simpson model based on new information priority accumulation method is developed in this work to forecast the coke production in the Anhui China. The introduction of non-linear parameters makes the new model constructed with universality Place and Duration of Study: School of Science, Southwest University of Science and Technology, Mianyang, between April 2021 and June 2021. Methodology: This paper has established the nonlinear grey Bernoulli Simpson model with new information priority accumulation. Based on the grid search optimization, the data is divided by the leave-out method to construct a nonlinear problem to solve the nonlinear parameters of the model. Finally, the new model established was applied to the forecast of coke production in Anhui Province, China. Results: The MAPE and RMSPE of the nonlinear grey Bernoulli Simpson model based on new information priority accumulation method are 1.86% and 2.58%, which are lower than other comparative models. Conclusion: The application research of coke production shows that the new model proposed in this paper has the advantage of high prediction accuracy, which indicates that this method has great potential in the short-term prediction of energy production.

2020 ◽  
pp. 65-72
Author(s):  
V. V. Savchenko ◽  
A. V. Savchenko

This paper is devoted to the presence of distortions in a speech signal transmitted over a communication channel to a biometric system during voice-based remote identification. We propose to preliminary correct the frequency spectrum of the received signal based on the pre-distortion principle. Taking into account a priori uncertainty, a new information indicator of speech signal distortions and a method for measuring it in conditions of small samples of observations are proposed. An example of fast practical implementation of the method based on a parametric spectral analysis algorithm is considered. Experimental results of our approach are provided for three different versions of communication channel. It is shown that the usage of the proposed method makes it possible to transform the initially distorted speech signal into compliance on the registered voice template by using acceptable information discrimination criterion. It is demonstrated that our approach may be used in existing biometric systems and technologies of speaker identification.


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