| EM算法在恒加试验线性模型中的应用 |
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| 引用本文： | 郭永兵,雷泽湘,吴亚鹏,费永俊.EM算法在恒加试验线性模型中的应用[J].长江大学学报,2008,5(1):21-24. |
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| 作者姓名： | 郭永兵 雷泽湘 吴亚鹏 费永俊 |
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| 作者单位： | [1]长江大学园艺园林学院,湖北荆州434025 [2]仲恺农业技术学院环境科学与工程系,广东广州510225 |
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| 基金项目： | 湖北省教育厅资助项目(2001B03003) |
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| 摘 要： | 基于右截尾的EM算法，给出了恒加试验线性模型的参数估计，并结合加速方程得到了产品的寿命估计。相比采用Gibbs抽样的蒙特卡罗贝叶斯方法、指数分布下加速寿命试验的贝叶斯方法和非参数的最小二乘估计统计法，该方法得出的结果更准确、更接近实值，且具有计算量小的优点。
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| 关 键 词： | EM算法 参数估计 寿命估计 恒加试验 线性模型 |
Study on Domestication of Wild Lycoris radiata Herb |
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| GUO Yong-bing LEI Ze-xiang College of Horticulture , Gardening,China.Study on Domestication of Wild Lycoris radiata Herb[J].Journal of Yangtze University,2008,5(1):21-24. |
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| Authors: | GUO Yong-bing LEI Ze-xiang College of Horticulture Gardening China |
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| Institution: | GUO Yong-bing (College of Horticulture , Gardening,Yangtze University,Jingzhou,Hubei 434025,China)LEI Ze-xiang College of Horticulture , Gardening,China,Department of Environmental Science , Engineering,Zhongkai University of Agriculture ,Technology,Guangzhou,Guangdong 510225,ChinaWU Ya-peng,FEI Yong-jun (College of Horticulture , Gardening,China) |
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| Abstract: | The domestication of wild Lycoris radiata Herb was studied on biological,morphological and anatomical characteristics.The results indicated that there was a certain difference between the populations of the wild and the domesticated L.radiata because of their different habitats.The bolting phase,flowering phase and flower overripe phase of L.radiata,which was domesticated and cultivated for 3 years,became earlier.The leaf area was smaller than that of wild L.radiata,while the number of leaf,bulb diameter an... |
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| Keywords: | Lycoris radiata Herb domestication phenophase morphological characteristics anatomical structure |
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