The Savitzky-Golay (SG) filter is widely used to smooth and differentiate time series, especially biomedical data. However, time series that exhibit abrupt departures from their typical trends, such as sharp waves or steps, which are of physiological interest, tend to be oversmoothed by the SG filter. Hence, the SG filter tends to systematically underestimate physiological parameters in certain...

The accurate prediction of the load curve is not only vital to establishment generation scheduling, unit start-stop, and maintenance plan, but also has an important influence on ensuring smooth operation side consumption side, reducing cost power improving economic benefits. Based this, a short-term forecasting method based Savitzky-Golay time series filtering constructed. Firstly, relevant fac...

The purpose of this study was to enhance the accuracy calorific value estimation coal by applying data preprocessing methods in laser-induced breakdown spectroscopy (LIBS). Savitzky–Golay (SG)-smoothing and SG derivative were adopted improve prediction model. relationship among original, SG-smoothing-pretreated, derivative-pretreated LIBS their elemental concentrations determined using partial ...

Abstract In order to prevent electrical fire in low-voltage distribution system, it is a very effective measure predict the life of various appliances running on line. At present, difficult residual AC contactors. How establish reasonable and reliable prediction model for contactors key test characteristic research this paper, Savitzky-Golay convolution smoothing algorithm combined with BP neur...

Taking the traction motor of CRH2 high-speed train as research object, this paper proposes a diagnosis method based on random forest and XGBoost for compound fault resulting from stator interturn short circuit air gap eccentricity. First, U-phase V-phase currents are used signal then Savitzky–Golay filtering is noise deduction signal. Second, wavelet packet decomposition to extract composite fe...

One of the treatment methods that is suitable for maintaining quality salak pondoh fruit cold storage. However, storage below its optimum temperature (15°C) can cause chilling injury/CI. This research aims to develop a non-destructive method determining CI symptoms during at 5°C with NIRS. Measurements were carried out 14 days by measuring parameters (pH and IL/ion leakage) NIR reflectance spec...

Raman spectroscopy is a powerful diagnostic tool in biomedical science, whereby different disease groups can be classified based on subtle differences the cell or tissue spectra. A key component classification of spectra application multi-variate statistical models. However, scattering weak process, resulting trade-off between acquisition times and signal-to-noise ratios, which has limited its ...