A Zero-Shot Learning Approach for Blockage Detection and Identification Based on the Stacking Ensemble Model

• Published in: Sensors (Basel, Switzerland) Vol. 24; no. 17; p. 5596
• Main Authors: Li, Chaoqun, Feng, Zao, Jiang, Mingkai, Wang, Zhenglang
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 29.08.2024
• Subjects: Accuracy; attribute description; Classification; Datasets; defect detection; Defects; Drainage; ensemble learning; Fault diagnosis; Identification; Leak detection; Machine learning; Pipes; Semantics; signal processing; Urban areas; zero-shot learning
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s24175596

A data-driven approach to defect identification requires many labeled samples for model training. Yet new defects tend to appear during data acquisition cycles, which can lead to a lack of labeled samples of these new defects. Aiming at solving this problem, we proposed a zero-shot pipeline blockage detection and identification method based on stacking ensemble learning. The experimental signals were first decomposed using variational modal decomposition (VMD), and then, the information entropy was calculated for each intrinsic modal function (IMF) component to construct the feature sets. Second, the attribute matrix was established according to the attribute descriptions of the defect categories, and the stacking ensemble attribute learner was used for the attribute learning of defect features. Finally, defect identification was accomplished by comparing the similarity within the attribute matrices. The experimental results show that target defects can be identified even without targeted training samples. The model showed better classification performance on the six sets of experimental data, and the average recognition accuracy of the model for unknown defect categories reached 72.5%.