河南科学
河南科學
하남과학
HENAN SCIENCE
2014年
11期
2332-2336
,共5页
乔松珊%孙成金%张建军
喬鬆珊%孫成金%張建軍
교송산%손성금%장건군
加权马尔可夫链%人均水资源%随机波动%预测
加權馬爾可伕鏈%人均水資源%隨機波動%預測
가권마이가부련%인균수자원%수궤파동%예측
weighted Markov chain%per capita available water resources%random fluctuation%prediction
引入灰精度指标,基于加权马尔可夫链理论对灰色模型进行改进,并以2000—2011年我国人均水资源量为基础,建立预测模型进行实证分析.结果表明,与传统的灰色预测相比,平均相对误差由15.94%降低为4.05%,较好地提高了预测的精度.
引入灰精度指標,基于加權馬爾可伕鏈理論對灰色模型進行改進,併以2000—2011年我國人均水資源量為基礎,建立預測模型進行實證分析.結果錶明,與傳統的灰色預測相比,平均相對誤差由15.94%降低為4.05%,較好地提高瞭預測的精度.
인입회정도지표,기우가권마이가부련이론대회색모형진행개진,병이2000—2011년아국인균수자원량위기출,건립예측모형진행실증분석.결과표명,여전통적회색예측상비,평균상대오차유15.94%강저위4.05%,교호지제고료예측적정도.
The Grey precision index and improved Grey model was introduced based on the weighted Markov theory. The weighted Markov correction model was built based on the per capita water resources in China from 2000 to 2011. Compared with the traditional grey prediction,the test results show that the average relative error is reduced from 15.94%to 4.05%,and the prediction accuracy is obviously improved.