SIMPLE ENCODING OF INFRARED SPECTRA FOR PATTERN RECOGNITION. 1: STATISTICAL EXAMINATION OF THE EFFECTIVENESS AND INFORMATION CONTENT BY FACTOR ANALYSIS

摘要

The spectral region from 700 to 3600 cm~(-1) is subdivided into several wave number intervals. The peaks in each interval are summarized by means of three encoding algorithms. Using a factor model of kcommon factors, the total extractable variance (com) of a given set of intervals is calculated and correlated with the redundancy of information in all these intervals. The value of com is verified by analysis of the factor loadings a_(ik) (factor pattern). Finally, the information content of some chosen sets of intervals coded by the three selected feature algorithms will be correlated to the probability of information flow through a serial-parallel network. The encoding using only wave numbers was found to be the most effective.