Ratios of LIBS spectral lines of Epoxy resins

This dataset contains two CSV files with spectral descriptors derived from the analysis of Laser-Induced Breakdown Spectroscopy (LIBS) measurements for eight different epoxy resins. The 'descriptors_no-norm.csv' contains descriptors obtained from the spectra prior to any normalization, while the 'descriptors_snv.csv' contains same descriptors extracted after pre-processed spectra with SNV normalization. Columns “0” to “665” represent the intensity ratios between selected spectral peaks, resin type is labeled with a letter in column “Keyword” (A–H), and “day” column contains the date of spectral adquisition.