id	keyword
brj-23074	classification
brj-23074	paper
brj-23074	data
brj-23074	models
brj-23074	spectra
brj-23074	cnn
brj-23074	printing
brj-23074	cm−1
brj-23074	paper classification
brj-23074	products
brj-23074	hwang
brj-23074	fig
brj-23074	derivative