NEURAL NETWORK AIDED GLITCH-BURST DISCRIMINATION AND GLITCH CLASSIFICATION

Salvatore Rampone (), Vincenzo Pierro (), Luigi Troiano () and Innocenzo M. Pinto ()
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Salvatore Rampone: Department of Science and Technology, University of Sannio, Via dei Mulini 59/A – Palazzo Inarcassa, I-82100 Benevento, Italy
Vincenzo Pierro: Department of Engineering, University of Sannio, I-82100 Benevento, Italy
Luigi Troiano: Department of Engineering, University of Sannio, I-82100 Benevento, Italy
Innocenzo M. Pinto: Department of Engineering, University of Sannio, I-82100 Benevento, Italy

International Journal of Modern Physics C (IJMPC), 2013, vol. 24, issue 11, 1-17

Abstract: We investigate the potential of neural-network based classifiers for discriminating gravitational wave bursts (GWBs) of a given canonical family (e.g. core-collapse supernova waveforms) from typical transient instrumental artifacts (glitches), in the data of a single detector. The further classification of glitches into typical sets is explored. In order to provide a proof of concept, we use the core-collapse supernova waveform catalog produced by H. Dimmelmeier and co-Workers, and the data base of glitches observed in laser interferometer gravitational wave observatory (LIGO) data maintained by P. Saulson and co-Workers to construct datasets of (windowed) transient waveforms (glitches and bursts) in additive (Gaussian and compound-Gaussian) noise with different signal-to-noise ratios (SNR). Principal component analysis (PCA) is next implemented for reducing data dimensionality, yielding results consistent with, and extending those in the literature. Then, a multilayer perceptron is trained by a backpropagation algorithm (MLP-BP) on a data subset, and used to classify the transients as glitch or burst. A Self-Organizing Map (SOM) architecture is finally used to classify the glitches. The glitch/burst discrimination and glitch classification abilities are gauged in terms of the related truth tables. Preliminary results suggest that the approach is effective and robust throughout the SNR range of practical interest. Perspective applications pertain both to distributed (network, multisensor) detection of GWBs, where someintelligenceat the single node level can be introduced, and instrument diagnostics/optimization, where spurious transients can be identified, classified and hopefully traced back to their entry points.

Keywords: Gravitational wave; burst; glitch; neural network classifiers; 04.80.Nn; 84.35.+i; 07.05.Kf (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1142/S0129183113500848

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