A Comparison of the Multivariate Calibration Methods with Feature Selection for Gas Sensors’ Long‐Term Drift Effect

Year 2019, Volume: 11 Issue: 3, 170 - 176, 30.12.2019

Gülnur Begüm Ergün Selda Güney

Abstract

In many electronic nose applications where gas sensors utilizing for a
long time, there is an undesirable drift effect on the sensors, which affects the
classification quality negatively. Although the sensor drift is inevitable, it is
possible to reduce this effect with the calibration transfer methods. This paper
presents a comparison study of various multivariate standardization methods to
facilitate an effective calibration way on a comprehensive dataset, which is
reachable on‐line. In this study, three methods applied: direct standardization (DS)
orthogonal signal correction (OSC) and piecewise direct standardization (PDS). In
addition, these three methods are applied data, which consisted of selected
features. The results have shown that the classification success has increased with
multivariate calibration technique applied to the selected features. The results also
demonstrate that using the best features in the signal processing part can play an
important role for the calibration

Keywords

Calibration transfer, Feature selection, Gas sensors, Multivariate drift correction, Standardization methods

A Comparison of the Multivariate Calibration Methods with Feature Selection for Gas Sensors’ Long‐Term Drift Effect

Abstract

In many electronic nose applications where gas sensors utilizing for a long time, there is an undesirable drift effect on the sensors, which affects the classification quality negatively. Although the sensor drift is inevitable, it is possible to reduce this effect with the calibration transfer methods. This paper presents a comparison study of various multivariate standardization methods to facilitate an effective calibration way on a comprehensive dataset, which is reachable on‐line. In this study, three methods applied: direct standardization (DS) orthogonal signal correction (OSC) and piecewise direct standardization (PDS). In addition, these three methods are applied data, which consisted of selected features. The results have shown that the classification success has increased with multivariate calibration technique applied to the selected features. The results also demonstrate that using the best features in the signal processing part can play an important role for the calibration

Keywords

Kalibrasyon transferi, Öznitelik seçimi, Gaz sensörleri, Çok değişkenli sapma düzeltme, Standartlaştırma yöntemleri

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