人民珠江2024，Vol.45Issue(1)：146-153,8.DOI:10.3969/j.issn.1001-9235.2024.01.015
基于组合权重的Fisher最优分割法在水库汛期分期中的应用
Application of Improved Fisher Optimal Segmentation Method Based on Combined Weight Method in Reservoir Flood Season Staging
摘要
Abstract
In Fisher optimal segmentation method,multi-index weighting only considers a single objective weighting method.To overcome the shortcoming,this paper introduces the entropy weight method based on information theory,the coefficient of variation method based on statistical principle,and the CRITIC weighting method in the calculation of index weight.It proposes the Fisher optimal segmentation method based on combined weight.Taking Shuibuya Reservoir as an example,five indicators are selected,including the average flow in ten days,the number of occurrences of the maximum peak flood flow,the maximum one-day flood volume in ten days,the maximum three-day flood volume in ten days,and the maximum seven-day flood volume in ten days.Then the Fisher optimal segmentation method is applied to divide the flood season,and the staging results are compared with the staging results by a single objective weighting method.It is determined that the flood season is divided into three optimal periods.The pre-flood season is from May 1 to June 10,themainfloodseasonfrom June 11 to July31,andthepost-floodseasonfrom August1 to September30.Theresultsshow that the combined weight method takes into account the advantages of the entropy weight method,the coefficient of variation method,and the CRITIC weighting method.The method can intuitively distinguish the influence degree of different indexes on flood season staging and is suitable for determining multi-index weight in the Fisher optimal segmentation method.关键词
汛期分期/多指标权重/组合权重法/Fisher最优分割法/结果影响Key words
flood season staging/multi-index weight/combined weight method/Fisher optimal partition method/result influence分类
建筑与水利引用本文复制引用
夏青青,李英海,刘芬,劳嘉鹏,田丽娟..基于组合权重的Fisher最优分割法在水库汛期分期中的应用[J].人民珠江,2024,45(1):146-153,8.基金项目
长江科学院开放研究基金项目(CKWV2021889/KY) （CKWV2021889/KY）
智慧长江与水电科学湖北省重点实验室开放基金(242202000903) （242202000903）
