HOU Xiang-long, YANG Hui. Prediction of Annual Precipitation over Reservoir Based on Sliding Unbiased Grey Markov Model[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 181-184.
HOU Xiang-long, YANG Hui. Prediction of Annual Precipitation over Reservoir Based on Sliding Unbiased Grey Markov Model[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 181-184. DOI: 10.13961/j.cnki.stbctb.2014.03.035.
In order to distinguish grey model or grey Markov model is more suitable for rainfall forecasting
grey model(GM)
unbiased grey model and moving unbiased grey model were compared by taking the Caizhuang Reservoir in Shouyang County
Shanxi Province as the research object and using its 40 a rainfall data. The model with the highest precision slinding unbiased grey model was chosen and added to Markov model to generate grey Markov model and then compare it with grey model. Results showed that grey model gave a poor result for long-term prediction and highly fluctuant data. Therefore
based on grey model and Markov model
improved grey Markov model was established
which had their respective advantages and better predicting effects.