scholarly journals Global Solar Radiation Forecasting using Artificial Neural Network and Support Vector Machine

2021 ◽  
Vol 2129 (1) ◽  
pp. 012079
Author(s):  
Emmanuel Philibus ◽  
Roselina Sallehuddin ◽  
Yusliza Yussof ◽  
Lizawati Mi Yusuf

Abstract Global solar radiation (GSoR) forecasting involves predicting future energy from the sun based on past and present data. Literature reveals that not all meteorological stations record solar radiation, some equipments are faulty, and are not available in every location due to high cost. Hence, the need to predict and forecast using predictors such as land surface temperature (LST). Satellite data when were used to complement ground-based stations have been yielding good results. Different artificial intelligence (AI) methods such as Support Vector Machine (SVM) and Artificial Neural Network (ANN) present different forecasting performances. Motivated by existing literature-related contradictions on the performance superiority of ANN and SVM in GSoR forecasting, the two techniques were compared based on several statistical tests. Experimental results show that ANN outperformed SVM by 2.9864% accuracy, making it superior in the forecast of GSoR.

2021 ◽  
Vol 2021 (1) ◽  
pp. 1036-1043
Author(s):  
Harifa Hananti ◽  
Kartika Sari

Kasus kekurangan gizi atau gizi buruk pada balita menyebar hampir di seluruh provinsi yang ada di Indonesia. Provinsi Sulawesi Barat merupakan salah satu provinsi yang memiliki nilai persentase kekurangan gizi pada balita, sehingga dari faktor-faktor yang mempengaruhi gizi balita sangat penting untuk dilakukan dalam pengklasifikasian. Data yang digunakan adalah data dari Puskesmas Salissingan pada Tahun 2018. Penelitian ini bertujuan untuk melakukan pengklasifikasian dan mendapatkan metode terbaik pada gizi balita (gizi baik & gizi kurang) di Puskesmas Salissingan Sulawesi Barat dengan metode support vector machine (SVM) dan artificial neural network (ANN). Metode klasifikasi yang terbaik dalam melihat ukuran ketepatan klasifikasi adalah metode SVM dan ANN. Dari hasil analisis diperoleh ukuran ketepatan klasifikasi pada metode ANN (accuracy=94,82%, precision=51.00%, recall=51.09%, dan AUC=0.910), sedangkan pada metode SVM (accuracy=94,46%, precision=46.08%, recall=50.59%, dan AUC=0.900) dan dari hasil ukuran tersebut diperoleh bahwa metode yang terbaik dalam pengklasifikasian gizi balita di Puskesmas Salissingan Sulawesi Barat adalah ANN.


Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 85 ◽  
Author(s):  
Thabo Michael Bafitlhile ◽  
Zhijia Li

The aim of this study was to develop hydrological models that can represent different geo-climatic system, namely: humid, semi-humid and semi-arid systems, in China. Humid and semi-humid areas suffer from frequent flood events, whereas semi-arid areas suffer from flash floods because of urbanization and climate change, which contribute to an increase in runoff. This study applied ɛ-Support Vector Machine (ε-SVM) and artificial neural network (ANN) for the simulation and forecasting streamflow of three different catchments. The Evolutionary Strategy (ES) optimization method was used to optimize the ANN and SVM sensitive parameters. The relative performance of the two models was compared, and the results indicate that both models performed well for humid and semi-humid systems, and SVM generally perform better than ANN in the streamflow simulation of all catchments.


2021 ◽  
Author(s):  
Zohreh Ganji ◽  
Seyed Amir Zamanpour ◽  
Hoda Zare

Abstract Background: Accurate classification of focal cortical dysplasia (FCD) has been challenging due to the problematic visual detection in magnetic resonance imaging (MRI). Hence, recently, there has been a necessity for employing new techniques to solve the problem.Methods: MRI data were collected from 58 participants (30 subjects with FCD type II and 28 normal subjects). Morphological and intensity-based characteristics were calculated for each cortical level and then the performance of the three classifiers: decision tree (DT), support vector machine (SVM) and artificial neural network (ANN) was evaluated.Results: Metrics for evaluating classification methods, sensitivity, specificity and accuracy for the DT were 96.7%, 100% and 98.6%, respectively; It was 95%, 100% and 97.9% for the SVM and 96.7%, 100% and 98.6% for the ANN.Conclusion: Comparison of the performance of the three classifications used in this study showed that all three have excellent performance in specificity, but in terms of classification sensitivity and accuracy, the artificial neural network method has worked better.


2015 ◽  
Vol 74 (1) ◽  
Author(s):  
Roselina Sallehuddin ◽  
Subariah Ibrahim ◽  
Azlan Mohd Zain ◽  
Abdikarim Hussein Elmi

Fraud in communication has been increasing dramatically due to the new modern technologies and the global superhighways of communication, resulting in loss of revenues and quality of service in telecommunication providers especially in Africa and Asia.  One of the dominant types of fraud is SIM box bypass fraud whereby SIM cards are used to channel national and multinational calls away from mobile operators and deliver as local calls. Therefore it is important to find techniques that can detect this type of fraud efficiently. In this paper, two classification techniques, Artificial Neural Network (ANN) and Support Vector Machine (SVM) were developed to detect this type of fraud.   The classification uses nine selected features of data extracted from Customer Database Record.  The performance of ANN is compared with SVM to find which model gives the best performance. From the experiments, it is found that SVM model gives higher accuracy compared to ANN by giving the classification accuracy of 99.06% compared with ANN model, 98.71% accuracy. Besides, better accuracy performance, SVM also requires less computational time compared to ANN since it takes lesser amount of time in model building and training.


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