Combined Features with Global and Local Features for Gas Classification

CHOI， SANG-IL

Journal of The Korea Society of Computer and Information

Abbr : JKSCI
2016, 21(9), pp.11-18
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science

CHOI， SANG-IL ¹

¹ 단국대학교

ABSTRACT

In this paper, we propose a gas classification method using combined features for an electronic nose system that performs well even when some loss occurs in measuring data samples. We first divide the entire measurement for a data sample into three local sections, which are the stabilization, exposure, and purge; local features are then extracted from each section. Based on the discrimination analysis, measurements of the discriminative information amounts are taken. Subsequently, the local features that have a large amount of discriminative information are chosen to compose the combined features together with the global features that extracted from the entire measurement section of the data sample. The experimental results show that the combined features by the proposed method gives better classification performance for a variety of volatile organic compound data than the other feature types, especially when there is data loss.
KEYWORDS

Gas classification , Electronic nose , Discriminant analysis , Global feature , Local feature , Feature selection , Combined feature
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