| 融合免疫机制的协同进化模型 |
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| 引用本文： | 孙美华,胡东,刘成立,张丽姗. 融合免疫机制的协同进化模型[J]. 首都师范大学学报(自然科学版), 2012, 33(1): 34-38 |
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| 作者姓名： | 孙美华 胡东 刘成立 张丽姗 |
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| 作者单位： | 1. 首都师范大学生命科学学院,北京,100048
2. 三河市第二中学,河北,065201 |
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| 摘 要： | 针对传统进化算法在计算效能方面存在的一些问题,借鉴协同进化算法的思想,提出了一种融合免疫机制的协同进化模型。该模型通过多个子种群各自分别进化以保持整个种群的多样性。在每次迭代进化过程中,各个子种群分别选择精英抗体并进行免疫记忆。随后各个子种群分别以不同的算法进行变异。若变异后抗体的适应度降低,则利用精英抗体对其进行引导操作。群体间的协作包括子种群间若干个抗体的随机交叉和子种群间的大规模迁移。最终进行免疫代谢,去除群中的弱适应度个体。算法反复迭代进行以上操作,直至达到既定目标或预定的循环迭代次数。通过对13个标准测试函数进行的仿真实验显示,该模型在搜索最优解或满意解时均优于传统的进化算法,同时在寻优效率上有较大的提升。
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| 关 键 词： | 协同 免疫 进化算法 迁徙 计算效能 |
Effects of Cutting Treatments on Gui River Downstream Wetland Plant Communities |
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| Sun Meihua , Hu Dong , Liu Chengli , Zhang Lishan. Effects of Cutting Treatments on Gui River Downstream Wetland Plant Communities[J]. Journal of Capital Normal University(Natural Science Edition), 2012, 33(1): 34-38 |
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| Authors: | Sun Meihua Hu Dong Liu Chengli Zhang Lishan |
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| Affiliation: | 1.College of Life Science,Capital Normal University,Beijing 100048;2.Sanhe No.2 Secondary School,Hebei 065201) |
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| Abstract: | This study by analyzing the effects of cutting treatments on Gui River downstream wetland plant communities indicated that:All of three kinds of cutting could change the dor minant species or the dor minance of dor minant species,and affect community structure.The biomass of different plant community after mowing was changed differently.Some of the community biomass decreased,and some have increased significantly.Species diversity index was changed significantly after cutting in many plant community,and the most was heightened.Or the difference was not significant to the contrast. |
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| Keywords: | cutting Gui river wetland plant communities effects. |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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