| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for identifying an unknown material to be equal to a material matched thereto by performing matching of the unknown material with each of a number of known materials. SOLUTION: In the method for identifying an unknown product, the absorbance spectrum of the unknown product to be identified is measured and an unknown product score vector is determined from the unknown product spectrum projecting in principal component inside model space of clusters. It is determined whether or not the unknown product score vector falls within one of the envelopes and if so the product score vector is projected into the principal component inside model space of that cluster, and it is determined whether or not the unknown product score vector falls within any of the subclusters divided from the cluster. This process is repeated until the unknown product score vector is found to lie in a cluster which is not further subdivided. In this manner, the search is narrowed to a few products. COPYRIGHT: (C)2007,JPO&INPIT |
