Learning from imbalanced pulsar data by combine DCGAN and PILAE algorithm

•A novel method for pulsar candidate classification.•Features learning for pulsar candidate in the image domain by extraction deep features using DCGAN model.•A classifier defined by MLP neural networks trained with pseudoinverse learning autoencoder (PILAE) algorithm.•We utilized the synthetic mino...

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Veröffentlicht in:New astronomy 2021-05, Vol.85, p.101561, Article 101561
Hauptverfasser: Mahmoud, Mohammed A.B., Guo, Ping
Format: Artikel
Sprache:eng
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Zusammenfassung:•A novel method for pulsar candidate classification.•Features learning for pulsar candidate in the image domain by extraction deep features using DCGAN model.•A classifier defined by MLP neural networks trained with pseudoinverse learning autoencoder (PILAE) algorithm.•We utilized the synthetic minority over-sampling technique (SMOTE) to handle the imbalance in the dataset.•Results from HTRU, MNIST and CIFAR-10 datasets have shown that the presented framework achieves excellent results and reasonably low complexly. A pulsar is a rapidly rotating neutron star and transmits periodic oscillations of power to the earth. We introduce a novel method for pulsar candidate classification. The method contains two major steps: (1) make strong representations for pulsar candidate in the image domain by extracting deep features with the deep convolutional generative adversarial Networks (DCGAN) and (2) develop a classifier defined by multilayer perceptron (MLP) neural networks trained with pseudoinverse learning autoencoder (PILAE) algorithm. We utilized the synthetic minority over-sampling technique (SMOTE) to handle the imbalance in the dataset. We report a variety of measure scores from the output of the PILAE method on datasets utilized in the experiments. The PILAE training process does not have to determine the learning control parameters or indicate the number of hidden layers. Therefore, the PILAE classifier can fulfil superior execution in terms of training effectiveness and accuracy. Empirical results from the high time resolution universe (HTRU) mid-latitude dataset, MNIST dataset and CIFAR-10 have demonstrated that the presented framework achieves excellent results with other models and reasonably low complexly.
ISSN:1384-1076
1384-1092
DOI:10.1016/j.newast.2020.101561