• Endmaker@ani.social
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    2 days ago

    I was hoping the article would tell us more about the technique he developed.

    The model I implemented can be used for other time domain studies in astronomy, and potentially anything else that comes in a temporal format

    All I gathered from it is that it is a time-series model.

    • Deebster@programming.dev
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      2 days ago

      I found his paper: https://iopscience.iop.org/article/10.3847/1538-3881/ad7fe6 (no paywall 😃)

      From the intro:

      VARnet leverages a one-dimensional wavelet decomposition in order to minimize the impact of spurious data on the analysis, and a novel modification to the discrete Fourier transform (DFT) to quickly detect periodicity and extract features of the time series. VARnet integrates these analyses into a type prediction for the source by leveraging machine learning, primarily CNN.

      They start with some good old fashioned signal processing, before feeding the result into a neutral net. The NN was trained on synthetic data.

      FC = Fully Connected layer, so they’re mixing FC with mostly convolutional layers in their NN. I haven’t read the whole paper, I’m happy to be corrected.