A Robust and Low-Complexity Gas Recognition Technique for On-Chip Tin-Oxide Gas Sensor Array

Figure 4

Robustness Comparison: recognition accuracy as a function of drift’s rate. In continuous line, the results of the proposed recognition system without retraining. In dashed line, the results obtained in [15] with retraining. In dashed-dot line, the results obtained in [15] without retraining. The proposed method outperforms the performances in [15] and shows a quite invariance of the recognition accuracy of the drifted measurements, even the system is trained on a nondrifted measurements.