| 光谱学与光谱分析 |
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| An Outlier Diagnosis on Near Infrared Spectroscopy Analysis of NDF Content in Corn Silage Feeds |
| LIU Qiang1,LUO Chang-bing2,CHEN Shao-jiang3,MENG Qing-xiang1* |
1. College of Animal Science and Technology,China Agricultural University,Beijing 100094,China
2. Research Center for Shinong Lufang,Beijing 100094,China
3. College of Agriculture and Biological Technology,China Agricultural University,Beijing 100094,China |
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Abstract An experiment was conducted to study the outlier diagnosis on the near infrared spectroscopy (NIRS) analysis of NDF content in corn silage feeds. Various Mahalanobis’ distances including 3 and 2×Mahalanobis’ distances and the average of Mahalanobis’ distance +2 SD (AV+2 SD) were set to diagnose the spectral outliers during the model development,and their effects on the calibration models were compared respectively. The results showed that it was feasible to diagnose the spectral outliers for NIRS analysis of NDF content in corn silage feeds when the Mahalanobis’ distance was AV+2 SD,the r is 0.97 and the SEC is 2.456. The calibration model optimized under such conditions was the best.
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Received: 2006-05-25
Accepted: 2006-10-09
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Corresponding Authors:
MENG Qing-xiang
E-mail: qxmeng@cau.edu.cn
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| Cite this article: |
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LIU Qiang,LUO Chang-bing,CHEN Shao-jiang, et al. An Outlier Diagnosis on Near Infrared Spectroscopy Analysis of NDF Content in Corn Silage Feeds[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(08): 1514-1518.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I08/1514 |
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