| 秸秆热值近红外光谱模型的外部验证结果间的统计比较分析 |
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| 引用本文： | 皇才进,刘贤,杨增玲,韩鲁佳.秸秆热值近红外光谱模型的外部验证结果间的统计比较分析[J].光谱学与光谱分析,2009,29(5):1264-1267. |
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| 作者姓名： | 皇才进 刘贤 杨增玲 韩鲁佳 |
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| 作者单位： | 中国农业大学工学院,北京,100083 |
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| 摘 要： | 从全国24个省(市)收集到222个秸秆样品,包括172个稻秸样品和50个麦秸样品.采用近红外光谱技术,结合主成分回归、偏最小二乘回归和改进的偏最小二乘回归建立了秸秆热值的定量分析校正模型.近红外光谱模型的建立与优化过程中使用了不同的散射校正方法和光谱导数处理来帮助改善模型精度.对得到的54个模型采用统计学的方法分析外部验证的结果,通过比较外部验证的系统偏差(Bias)和Bias校正的预测标准差(SEP(C)),考察了不同光谱预处理和回归方法对秸秆热值的近红外模型预测性能的影响.结果表明:近红外光谱技术能够快速、准确地分析秸秆的热值,模型的SEP(C)在134～178 J·g-1之间;对外部验证结果的统计分析,能够有效地选择较好的建模方法,确定较优模型.
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| 关 键 词： | 近红外光谱 外部验 f热值 统计比较 |
| 收稿时间： | 2007/11/26 |
Statistical Comparison of Independent Validation Results for Near Infrared Spectroscopy Models Predicting Calorific Value of Straw |
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| HUANG Cai-jin,LIU Xian,YANG Zeng-ling,HAN Lu-jia.Statistical Comparison of Independent Validation Results for Near Infrared Spectroscopy Models Predicting Calorific Value of Straw[J].Spectroscopy and Spectral Analysis,2009,29(5):1264-1267. |
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| Authors: | HUANG Cai-jin LIU Xian YANG Zeng-ling HAN Lu-jia |
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| Institution: | HUANG Cai-jin,LIU Xian,YANG Zeng-ling,HAN Lu-jia College of Engineering,China Agricultural University,Beijing 100083,China |
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| Abstract: | Two hundred and twenty-two straw samples,consisting of 170 rice straw samples and 50 wheat straw samples,were collected from 24 provinces of China.Near infrared spectroscopy(NIRS)was applied to build quantitative models for calorific value of straw combining the use of principal component regression(PCR),partial least square regression(PLS)and modified partial least square regression(MPLS).Different scatter correction methods and derivative treatments were adopted to help improve the accuracy of NIRS models... |
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| Keywords: | Near infrared spectroscopy Independent validation Calorific value Statistical comparison |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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