Gray prediction model
Web2. Grey prediction model The steps used in the grey prediction model are shown in Figure 1 [5]. AGO means the accumulated generating operation, and IAGO means the inverse accumulated generating operation. Obtain the original data series: X (0) Develop the AGO data series: X (1) Calculate the model parameters using the least square method WebHighlights • The concept of weighted fractional accumulation generation operation is given. • An optimized nonlinear grey Bernoulli prediction model is established. • Five algorithms …
Gray prediction model
Did you know?
WebMar 22, 2024 · Therefore, this study aimed to build a bone metastasis prediction model based on Gray level Co-occurrence Matrix (GLCM) - based Score to guide clinical diagnosis and treatment. Methods We retrospectively included 614 patients with colorectal cancer who underwent pelvic multiparameter magnetic resonance image(MRI) from January 2015 to … WebApr 1, 2009 · The grey prediction theory is methodology and it is necessary to constantly put forward new models or algorithm based on the theory to improve its performance, prediction accuracy especially. A proof concerning this subject has been presented by other authors [8].
WebIn order to improve the forecasting effect of the gray prediction model, this paper combines the fuzzy theory to construct the gray prediction model and explores its … WebOne of the grey prediction models, GM (1,1), has drawn our attention to energy demand forecasting [ 2 ]. Indeed, how factors such as income and population influence the demand for energy is not clear, so energy demand forecasting can be regarded as a grey system problem [ 2, 16 ].
WebGM (1,1) grey prediction model is adopted to whiten the equation, and the values of α and u of the parameter model are determined by the least-square method. The GM (1,1) … WebDec 28, 2014 · Grey prediction technique is a useful tool for few data analysis and short term forecasting. GM (2,1) model is one of the most important grey models. For improving the precision and prediction ability, we proposed a structure optimized GM (2,1) model, namely, SOGM (2,1) model. This study contributes grey prediction theory on three points.
WebMar 28, 2024 · To evaluate the forecasting performance, the above-mentioned interval grey models on the basis of GM (1,1) usually whiten the model by generating a predicted value for each interval, and then compute the overall gaps between the …
WebBefore establishing the gray Bayesian network inference prediction model, it first involves the inference of the current development data of the system after the system shock. Generally speaking, according to the development trend of the system, the system shock can be divided into two forms. linkage\u0027s women in leadership instituteWebIn this paper, in order to predict the performance of an inertial platform, a prediction model for an inertial platform is designed combining a sliding window, grey theory and neural network (SGMNN). The experiments results show that the SGMNN model performs best in predicting the inertial platform drift rate compared with other prediction models. hot wheels chrysler groupWebMar 22, 2024 · Objective: The mortality of colorectal cancer patients with pelvic bone metastasis is imminent, and timely diagnosis and intervention to improve the prognosis is … hot wheels chevy tahoeWebMar 15, 2013 · Firstly, this paper put forward a novel grey model termed NGM model to improve the prediction accuracy of grey forecasting model. Secondly, it proposed an … hot wheels chicaneWebJul 1, 2024 · The GM (1,1) gray forecasting model with a weakening buffer operator was used to forecast rural logistics demand in Guangdong Province. According to the results, the prediction model has... link age twilight princessWebOct 23, 2024 · In grey system theory, a grey prediction model is one of the most important parts, and the GM (1, 1) model is the core of grey prediction. The purpose of GM (1, 1) … hot wheels chinaWebOct 22, 2024 · The grey relational models and grey prediction models are two main branches of the grey systems. The grey prediction models … hot wheels chocolate egg