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Detection of preterm birth in electrohysterogram signals based on wavelet transform and stacked sparse autoencoder

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  • Lili Chen
  • Yaru Hao
  • Xue Hu

Abstract

Based on electrohysterogram, this paper designed a new method using wavelet-based nonlinear features and stacked sparse autoencoder for preterm birth detection. For each sample, three level wavelet decomposition of a time series was performed. Approximation coefficients at level 3 and detail coefficients at levels 1, 2 and 3 were extracted. Sample entropy of the detail coefficients at levels 1, 2, 3 and approximation coefficients at level 3 were computed as features. The classifier was constructed based on stacked sparse autoencoder. In addition, stacked sparse autoencoder was further compared with extreme learning machine and support vector machine in relation to their classification performance of electrohysterogram. The experiment results reveal that classifier based on stacked sparse autoencoder showed better performance than the other two classifiers with an accuracy of 90%, a sensitivity of 92%, a specificity of 88%. The results indicate that the method proposed in this paper could be effective for detecting preterm birth in electrohysterogram and the framework designed in this work presents higher discriminability than other techniques.

Suggested Citation

  • Lili Chen & Yaru Hao & Xue Hu, 2019. "Detection of preterm birth in electrohysterogram signals based on wavelet transform and stacked sparse autoencoder," PLOS ONE, Public Library of Science, vol. 14(4), pages 1-16, April.
    • Handle: RePEc:plo:pone00:0214712
    DOI: 10.1371/journal.pone.0214712
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    1. Zhang, Ningning & Lin, Aijing & Ma, Hui & Shang, Pengjian & Yang, Pengbo, 2018. "Weighted multivariate composite multiscale sample entropy analysis for the complexity of nonlinear times series," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 508(C), pages 595-607.
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