Abstract
Multi-source multi-class classification methods based on multi-class Support Vector Machines and data fusion strategies are proposed in this paper. The centralized and distributed fusion schemes are applied to combine information from several data sources. In the centralized scheme, all information from several data sources is centralized to construct an input space. Then a multi-class Support Vector Machine classifier is trained. In the distributed schemes, the individual data sources are processed separately and modelled by using the multi-class Support Vector Machine. Then new data fusion strategies are proposed to combine the information from the individual multi-class Support Vector Machine models. Our proposed fusion strategies take into account that an Support Vector Machine (SVM) classifier achieves classification by finding the optimal classification hyperplane with maximal margin. The proposed methods are applied for fault diagnosis of a diesel engine. The experimental results showed that almost all the proposed approaches can largely improve the diagnostic accuracy. The robustness of diagnosis is also improved because of the implementation of data fusion strategies. The proposed methods can also be applied in other fields.
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Project supported by the National Basic Research Program (973) of China (No. 2002cb312200), the Hi-Tech Research and Development Program (863) of China (No. 2002AA412010), and the National Natural Science Foundation of China (No. 60174038)
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Zhong-hui, H., Yun-zu, C., Yuan-gui, L. et al. Data fusion for fault diagnosis using multi-class Support Vector Machines. J. Zheijang Univ.-Sci. A 6, 1030–1039 (2005). https://doi.org/10.1631/jzus.2005.A1030
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DOI: https://doi.org/10.1631/jzus.2005.A1030
Key words
- Data fusion
- Fault diagnosis
- Multi-class classification
- Multi-class Support Vector Machines
- Diesel engine