Dissolved oxygen concentration predictions for running waters with using hybrid machine learning techniques

Author(s):  
Reza Dehghani ◽  
Hassan Torabi Poudeh ◽  
Zohreh Izadi
IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 157218-157237
Author(s):  
Sani Isah Abba ◽  
Nguyen Thi Thuy Linh ◽  
Jazuli Abdullahi ◽  
Shaban Ismael Albrka Ali ◽  
Quoc Bao Pham ◽  
...  

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Al Jlibawi A. Hussein ◽  
Mohammad Lutfi Othman ◽  
Aris Ishak ◽  
Bahari S. Moh Noor ◽  
Al Huseiny M. Sattar Sajitt

2013 ◽  
Vol 19 (4) ◽  
pp. 505-517 ◽  
Author(s):  
Jui-Sheng Chou ◽  
Chih-Fong Tsai ◽  
Yu-Hsin Lu

This study compares several well-known machine learning techniques for public-private partnership (PPP) project dispute problems. Single and hybrid classification techniques are applied to construct models for PPP project dispute prediction. The single classification techniques utilized are multilayer perceptron (MLP) neural networks, decision trees (DTs), support vector machines, the naïve Bayes classifier, and k-nearest neighbor. Two types of hybrid learning models are developed. One combines clustering and classification techniques and the other combines multiple classification techniques. Experimental results indicate that hybrid models outperform single models in prediction accuracy, Type I and II errors, and the receiver operating characteristic curve. Additionally, the hybrid model combining multiple classification techniques perform better than that combining clustering and classification techniques. Particularly, the MLP+MLP and DT+DT models perform best and second best, achieving prediction accuracies of 97.08% and 95.77%, respectively. This study demonstrates the efficiency and effectiveness of hybrid machine learning techniques for early prediction of dispute occurrence using conceptual project information as model input. The models provide a proactive warning and decision-support information needed to select the appropriate resolution strategy before a dispute occurs.


Author(s):  
Suduan Chen ◽  
Zong-De Shen

The purpose of this study is to establish an effective financial distress prediction model by applying hybrid machine learning techniques. The sample set is 262 financially distressed companies and 786 non-financially distressed companies, listed on the Taiwan Stock Exchange between 2012 and 2018. This study deploys multiple machine learning techniques. The first step is to screen out important variables with stepwise regression (SR) and the least absolute shrinkage and selection operator (LASSO), followed by the construction of prediction models, as based on classification and regression trees (CART) and random forests (RF). Both financial variables and non-financial variables are incorporated. This study finds that the financial distress prediction model built with CART and variables screened by LASSO has the highest accuracy of 89.74%.


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