Predicting global ionospheric TEC maps using Gaussian process regression

Shi, Chuang; Xue, Kaiyu; Wang, Cheng

doi:10.1016/j.asr.2023.06.036

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…For the retrieval of biophysical parameters in remote sensing applications, several kernel-based strategies have been investigated in the literature, including support vector machine (SVM), relevance vector machine (RVM), and GPR. In particular, GPR has shown a notable improvement over earlier non-linear non-parametric methods [23]. In this study, we investigate the parallels and discrepancies between SVR and GPR.…”

Section: Gaussian Process Regressionmentioning

confidence: 96%

Numerical Analysis of Gas Hold-Up of Two-Phase Ebullated Bed Reactor

Almukhtar,

Yahya,

Mahdy

et al. 2023

ChemEngineering

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Due to the significant increase in heavy feedstocks being transported to refineries and the hydrocracking process, the significance of adopting an ebullated bed reactor has been reemphasized in recent years. The predictive modelling of gas hold-up in an ebullated two-phase reactor was performed using 10 machine learning methods based on support vector machine (SVM) and Gaussian process regression (GPR) in this study. In an ebullated bed reactor, the impacts of three features, namely liquid velocity, gas velocity, and recycling ratio, on the gas hold-up were examined. The liquid velocity has the most impact on the predicted gas hold-up, according to the feature significance analysis. The rotational-quadratic, squared-exponential, Matern 5/2, and exponential kernel functions integrated with the GPR models and the linear, quadratic, cubic, fine, medium, and coarse kernel functions integrated with the SVM model performed well during training and testing, with the exception of the fine SVM model, whose R2 is very low. According to the R2 > 0.9 and low RMSE and MAE values, the rotational-quadratic, squared-exponential, and Matern 5/2 GPR models performed the best.

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Section: Gaussian Process Regressionmentioning

confidence: 96%