改进蝙蝠算法-投影寻踪湖泊健康评价模型及应用

Improved Algorithm Bats-Lake Health Evaluation of Projection Pursuit Model and Its Application

提出湖泊健康评价指标体系和分级标准,构建基于投影寻踪(PP)模型的湖泊健康评价模型,以云南省抚仙湖和星云湖健康评价为例进行实例研究。首先,利用层次分析法(AHP)从水文完整性、物理结构完整性、化学完整性、生物完整性和服务功能完整性5个方面遴选出12个指标,构建3个层次的湖泊健康评价指标体系和5个等级的分级标准;其次,针对PP模型在实际应用中最佳投影方向难以确定以及基本蝙蝠算法(BA)存在早熟收敛等不足,提出一种基于Lévy飞行策略改进的蝙蝠算法(LBA),通过10个复杂测试函数对该算法进行仿真验证,并与基本BA和粒子群优化(PSO)算法进行对比。最后,利用LBA算法搜寻PP模型最佳投影方向,提出LBA-PP湖泊健康评价模型,并对实例进行评价分析。结果表明:1LBA算法具有较好的收敛精度和全局寻优能力,将LBA算法用于PP模型最佳投影方向的选取,可有效提高PP模型评价精度;2LBA-PP模型对抚仙湖2011—2012年3次调查的评价结果均为"健康",对星云湖2012年2次调查的评价结果均为"亚健康"。

Taking Fuxian Lake and Xingyun Lake in Yunnan Province health evaluation as an example case, Lake Health Evaluation Index System and grading standards is put forward, and lake health evaluation model is built on the basis of projection pursuit( PP). First of all, using the analytic hierarchy process( AHP) to select 12 indexes from 5 aspects of hydrological integrity, physical structure,chemical integrity integrity, integrity and service function of biological integrity, grading standard construction of Lake health evaluation index system of 3 level and 5 level; secondly, according to the optimal projection direction the PP model in the practical application is difficult to determine the basic algorithm and bats( BA) such as premature convergence and other problems, put forward a kind of improved L algorithm of vy bats flying based on Strategy( LBA), the simulation of the algorithm through 10 complex test functions, and with the basic BA and particle swarm optimization( PSO) algorithm contrast. Finally, the search for the best projection direction PP model by using the LBA algorithm, proposed the LBA-PP Lake health evaluation model, and appraisal analysis of examples is carried on. Results show that: 1 the LBA algorithm has better convergence precision and global optimization ability, LBA algorithm is used to select the PP model is the best projection direction, can effectively improve the accuracy of PP evaluation model. The LBA-PP model for evaluation of Fuxian Lake in 2011-2012 survey results for health; 2 evaluation of survey of Xingyun Lake 2012 results are sub health.