Abstract:The day-flow prediction result in MISO of BP ANN with NLP is mainly determined by transfer combination of series. The same transfers with similar characteristic are better than different transfers of series . This paper predicted in 7 cases of MISO with daily runoff of Yangshuo
Gongcheng and Pingle Station in Guangxi province during 1973~2001. The results show that eligibility ratio of relative error in 10%
in 20% and in 30% by NLP are averagely 17.87%
15.85% and 8.29% more than LP respectively
that eligibility ratio of relative error in 10%
in 20% and in 30% by same NLP combination were averagely 3.52%
2.19% and 1.24% more than by different NLP combination respectively.