When the electronic nose is used to identify different varieties of distilled liquors, the pattern
recognition algorithm is chosen on the basis of the experience, which lacks the guiding
principle. In this research, the different brands of distilled spirits were identified using the
pattern recognition algorithms (principal component analysis and the artificial neural
network). The recognition rates of different algorithms were compared. The recognition rate
of the Back Propagation Neural Network (BPNN) is the highest. Owing to the slow …