Sensory substance classification method based on olfaction brain waves and PSO-SVM (particle swarm optimization support vector machine)

Abstract

The invention discloses a sensory substance classification method based on olfaction brain waves and a PSO-SVM (particle swarm optimization support vector machine). The method comprises the followingsteps: S1, obtaining electroencephalogram information of an examinee by using a brain-computer interface system, namely an electroencephalograph; S2, pre-processing the acquired electroencephalogram data; S3, extracting characteristics of the pre-processed electroencephalogram data based on linear characteristic and nonlinear characteristic analysis, wherein the characteristics comprise 76-dimensional data such as peak, mean, standard deviation, central value, center frequency, power and spectral entropy of alpha, beta and theta bands, as electroencephalogram characteristics in electroencephalogram research; S4, performing pattern recognition by using a PSO-SVM method. The sensory substance classification method disclosed by the invention is suitable for sensory evaluation of substances, and the sensory evaluation process is more concise, and more standardized, rigorous and scientific.

Description

technical field [0001] The invention relates to the technical field of sensory substance classification, in particular to a sensory substance classification method based on olfactory brain waves and PSO-SVM. Background technique [0002] Sensory evaluation is an interdisciplinary subject that is gradually developed and matured by modern physiology, psychology, statistics and other disciplines. In the entire evaluation system, sensory professionals are involved in the development of new products, basic research, adjustment of ingredients and processes, It plays a decisive role in the evaluation of cost reduction, quality assurance and product optimization. With the development of science and technology, more and more precision instruments for analyzing flavor substances have emerged as the times require. However, only relying on instrumental analysis cannot fully reflect the real feeling of the human body, so the sensory evaluation of the human body still occupies an importan...

AI Technical Summary

Problems solved by technology

With the development of science and technology, more and more precision instruments for analyzing flavor substances have emerged as the times require, but relying on instrumental analysis alone cannot fully reflect the real feeling of the human body, so the sensory evaluation of the human body still occupies an important position

In the process of sensory evaluation, personnel are required to personally participate in the use of sensory organs such as vision, smell, and taste. They are easily disturbed by daily habits and eating conditions. The sensory evaluation results given are mixed with personal Subjective factors, so it has a certain degree of subjectivity and poor repeatability

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