Automatic Threshold Estimation from Photoelectron Yield Spectroscopy (PYS) - Automatic Estimation of Analysis Range by Residual Analysis -

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  • 電子収量分光（PYS）スペクトルからの自動閾値推定 －残差分析による自動分析範囲の推定－
  • デンシ シュウリョウ ブンコウ(PYS)スペクトル カラ ノ ジドウ イキチ スイテイ : ザンサ ブンセキ ニ ヨル ジドウ ブンセキ ハンイ ノ スイテイ

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We have developed a mathematical automatic estimation algorithm for deriving the ionization potential from photoelectron yield spectroscopy (PYS). The residuals between the regression line and the data obtained by the Fowler model were calculated by the mean absolute error (MAE) and the mean square root error (RMSE). The analytical range that the Fowler model can be applied is estimated by using the ratio of RMSE/MAE. The estimation was performed by this algorithm using the 87 verification datasets. The correct answer rate was improved to 79% than the conventional fitting (least square method) rate of less than 50%.

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