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Suggested methods for prediction using semiparametric regression function | ||
| International Journal of Nonlinear Analysis and Applications | ||
| دوره 12، شماره 2، بهمن 2021، صفحه 2263-2267 اصل مقاله (325.68 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/ijnaa.2021.5373 | ||
| نویسنده | ||
| Aseel Sameer Mohamed* | ||
| Family and Community Medicine Department, Al Kindy Medical College, University of Baghdad, Iraq | ||
| تاریخ دریافت: 14 اسفند 1399، تاریخ بازنگری: 28 خرداد 1400، تاریخ پذیرش: 18 تیر 1400 | ||
| چکیده | ||
| Ferritin is a key organizer of protected deregulation, particularly below risky hyperferritinemia, by straight immune-suppressive and pro-inflammatory things. We conclude that there is a significant association between levels of ferritin and the harshness of COVID-19. In this paper, we introduce a semi-parametric method for prediction by making a combination of NN and regression models. So, two methodologies are adopted, Neural Network (NN) and regression model in designing the model; the data was collected from a nursing home hospital for period 11/7/2021- 23/7/2021, the sample size is 100 covid positive patients with 12 females \& 38 males out of 50, while 26 female \& 24 male are non-COVID out of 50. The input variables of the NN model are identified as the ferritin and a gender variable. The higher results precision is attained by the multilayer perceptron (MLP) networks when we applied the explanatory variables as the inputs with one hidden layer, which covers 3 neurons, as the planned many hidden layers are with one output of the fitting NN model which is used in stages of training and validation beside the actual data. We used a portion of the actual data to verify the behavior of the developed models, we find out that only one observation is a false predictive value. This means that the estimation model has significant parameters to forecast the type of Covid cases (Covid or no Covid). | ||
| کلیدواژه‌ها | ||
| Semi-parametric method؛ Neural Network models (NN)؛ regression؛ Ferritin level؛ COVID 19؛ multilayer perceptron (MLP) | ||
| مراجع | ||
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[1] G. Wu, X. Liu, T. Chen, G. Xu, W. Wang X. Zeng and X. Zhang, Elevation-dependent variations of tree growth and intrinsic water- use efficiency in Schrenk spruce ( Picea schrenkiana ) in the western Tianshan Mountains, Front. Plant Sci. 2015. [2] H. J. Stock and W. M. Watson, Business Cycles, Indicators and Forecasting, January 1993. http://www.nber. org/books/stoc93-1 [3] J. Fled, D. Tremblay, S. Thibaud and A. Kessler, Ferritin levels in patients with COVID -19: A poor predictor of mortality and hem phagocytic lymphohistiocytosis, Int. J. Lab. Hemat. 42 (2020) 773–779. [4] K.-W. Lee and Ch.-F. Lee, Cash holdings and corporate governance in the family-controlled firms, 1992. [5] L. Cheng, H. Li, L. Li, Ch. Liu, S. Yan, H. Chen and Y. Li, Ferritin in the coronavirus disease 2019 ( COVID -19): A systematic review and meta-analysis, J. Clin. Lab. Anal. 34(10) (2020) e23618. [6] R.G. Lomax, Statistical Concepts: A Second Course, Routledge, 2018. [7] A.S. Mohamed and N. A. Mohamed, Comparison between regression and artificial Neural Network in Forecasting, 4th Int. Sci. Conf. Arab Statist. 2013, pp: 20–21. [8] Pan American Health Organization (WHO/PAHO), Ferritin levels and COVID-19, International Repository for Information Sharing. https://iris.paho.org/handle/10665.2/3021 [9] S. Sawilowsky, F. S. Einstein and B. Fisher, The Probable Difference Between Two Means When σ 2 1 = σ 2 2 , J. Modern Appl. Stat. Meth. 1 (2002) 461–472. | ||
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