FIPS Moments for "A machine learning approach to classifying MESSENGER FIPS proton spectra"
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Kappa distribution fits to FIPS proton spectra for the paper titled "A machine learning approach to classifying MESSENGER FIPS proton spectra" in the Journal of Geophysical Research: Space Physics.<br>This dataset contains the three parameters fitted to each proton spectrum (density, temperature and kappa). Each spectral fit is analysed using 9 artificial neural networks (ANNs), where ANNs 0-7 each analyse an eight of a spectrum and the final network (ANN 8) provides an overall assessment of the quality of fit. Each network outputs a probability of the fit being good and a corresponding class label. A spectral fit is determined to be "good" when the probability ≥ 0.5. The accuracy of the final neural network is 96%, so in some cases a few spectra may be misclassified - manual verification is recommended when using these data. Please read the aforementioned paper for more information.<br>The file "FIPSProtonClass.dat" is organised into 22 columns:<br>Column 1: Date and time of spectrum formatted as "yyyy-mm-ddTHH:MM:SS.sss", where yyyy is the year, mm is the month, dd is the day, HH is the hour, MM is minutes and SS.sss is seconds.Column 2: Proton density, <i>n<sub>k</sub>, </i>in cm<sup>-3</sup>.Column 3: Proton temperature, <i>T<sub>k</sub></i>, in MK.Column 4: Kappa value - note that any value over ~10 may be approximated using a Maxwellian distribution, and any value less than 1.5 is below the limit of anti-equilibrium and is not physical.Columns 5-12: Probabilities, P0-P7, that the kappa distribution fit to each spectrum is good (output from ANN 0-7 in the paper).Column 13: Probability that the overall fit is good (output from ANN 8 in the paper).Column 14-21: Class of each split section, where 0 is bad and 1 is good. The class is 1 when P ≥ 0.5.Column 22: Overall spectral class predicted by ANN 8, where 1 is good and 0 is bad.<br>
提供机构:
University of Leicester
创建时间:
2020-01-07



