Wavelength interval selection based on random frog （iRF）

An efficient method of wavelength interval selection based on random frog for multivariate spectral calibration. Considering the fact that the vibrational and rotation al spectra have continuo us features of spectral bands,we propose anovel method of wavelength interval selection based on random frog,called interval random frog (iRF).To obtain all the possible continuous intervals,spectra are firstdivided into intervals by moving window of afixwidth over the whole spectra.These overlapping intervals are ranked applying random frog couple dwith PLS and the optimal ones are chosen.This method has been applied to two near-infrared spectral datasets displaying higher efficiency in wavelength interval selection than others.