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Li Wenhong

As seen in: Optica
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Articles by Li Wenhong

Low SNR multimirror Fabry-Perot pressure sensor optic spectrum signal analysis and demodulation via SVM-KNN regressors

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By Li Wenhong, Hao Chen, Xujin Li, Yiguang Yang
| Optica Verified
We demonstrate an ensemble learning based method to solve the problem of low SNR Fabry–Perot sensor spectrum signal demodulation. Taking the eight-layer approximate coefficients of a multilevel discrete wavelet transform as input features, an ensemble model that combines multiple SVM and KNN learners is trained. Bootstrap and booting techniques are introduced for better modeling performance and stability.
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Russia-Ukraine conflict manifests differences between US, Europe

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By Li Jiayao, Li Wenhong
| eng.chinamil.com.cn
By Li Wenhong The Ukraine crisis is the result of great power rivalry and a profound manifestation of geopolitical security conflicts in Europe. Combing and analyzing the development process of the Ukraine crisis reveals significant differences in the perceptions of the relations with Russia between the US and Europe, resulting in distinct interests and demands. Since the outbreak of the Russia-Ukraine conflict, the US has consistently fueled the tense situation.
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