Discrimination of Wood Biological Decay by Soft Independent Modeling of Class Analogy (SIMCA) Pattern Recognition Based on Principal Component Analysis
YANG Zhong1,JIANG Ze-hui1,2*,FEI Ben-hua1,QIN Dao-chun2
1. Research Institute of Wood Industry，Chinese Academy of Forestry, Beijing 100091, China 2. International Center for Bamboo and Rattan, Beijing 100102, China
Abstract：Wood, as a biomass materials, tends to be attacked by microorganisms, and its structure could be rapidly destroyed by biological decay. Therefore, it′s significant to rapidly and accurately detect or identify biological decay in wood. Recently, extensive research has demonstrated that near infrared spectroscopy (NIR) and soft independent modeling of class analogy (SIMCA) can be used to discriminate or detect a wide variety of food, medicine and agricultural products. The use of NIR coupled with principal component analysis (PCA)and SIMCA pattern recognition to detect wood biological decay was investigated in the present paper. The results showed that NIR spectroscopy coupled with SIMCA pattern recognition could be used to rapidly detect the biological decay in wood. The discrimination accuracy by the SIMCA model based on the training set for the non-decay, white-rot and brown-rot decay samples were 100%, 82.5% and 100%, respectively;and that for the samples for the test set were 100%, 85% and 100%, respectively. However, some white-rot decay samples were mis-discriminated as brown-rot decay, for which the main reasons might be that the training set does not have enough typical samples, and there′s a slight difference between white-rot and brown-rot decay during the early stage of decay.
Key words：Near infrared spectroscopy (NIR);Soft independent modeling of class analogy (SIMCA);Principal component analysis (PCA);Wood;Biological decay;Discrimination
杨忠1,江泽慧1,2*,费本华1,覃道春2. SIMCA法判别分析木材生物腐朽的研究[J]. 光谱学与光谱分析, 2007, 27(04): 686-690.
YANG Zhong1,JIANG Ze-hui1,2*,FEI Ben-hua1,QIN Dao-chun2 . Discrimination of Wood Biological Decay by Soft Independent Modeling of Class Analogy (SIMCA) Pattern Recognition Based on Principal Component Analysis. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(04): 686-690.
