Review of Information Engineering and Applications

Published by: Conscientia Beam
Online ISSN: 2409-6539
Print ISSN: 2412-3676
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No. 1

Forecasting Air Passengers of Changi Airport Based on Seasonal Decomposition and an LSSVM Model

Pages: 12-30
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Forecasting Air Passengers of Changi Airport Based on Seasonal Decomposition and an LSSVM Model

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DOI: 10.18488/journal.79.2018.51.12.30

G.X.M. Vu , Z.W. Zhong

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G.X.M. Vu , Z.W. Zhong (2018). Forecasting Air Passengers of Changi Airport Based on Seasonal Decomposition and an LSSVM Model. Review of Information Engineering and Applications, 5(1): 12-30. DOI: 10.18488/journal.79.2018.51.12.30
This work aimed to determine a suitable method to provide air traffic passenger forecasts of Changi airport. A linear forecasting technique in the form of a seasonal autoregressive integrated moving average (SARIMA) model and a nonlinear technique known as the least squares support vector machine (LSSVM) were compared. A hybrid X-13 LSSVM approach was also compared. A fourth approach was proposed to leverage the outputs of the hybrid X-13 LSSVM method to conduct forecasts for longer forecasting horizons. Results showed that SARIMA, direct LSSVM and X-13 LSSVM methods were able to provide accurate 1-month-ahead forecasts. However, SARIMA and direct LSSVM methods both suffered from forecasting inaccuracy, as the forecasting horizon increased. The X-13 LSSVM outperformed both SARIMA and direct LSSVM methods, in terms of small magnitude errors and forecasting directional changes across the forecasting horizons. The proposed fourth approach was able to provide 24-months-ahead forecasts and was easy to implement.
Contribution/ Originality
This study documents a suitable method to forecast air traffic passengers. A linear technique, a nonlinear technique and a hybrid X-13 LSSVM approach were compared. A fourth approach was proposed for longer forecasting horizons. Results showed that the proposed approach could provide 24-months-ahead forecasts and was easy to implement.

Methods of Organizing the Technological Process of Software Development

Pages: 1-11
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Methods of Organizing the Technological Process of Software Development

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DOI: 10.18488/journal.79.2018.51.1.11

Shafagat Mahmudova

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Shafagat Mahmudova (2018). Methods of Organizing the Technological Process of Software Development. Review of Information Engineering and Applications, 5(1): 1-11. DOI: 10.18488/journal.79.2018.51.1.11
The article provides information on the methods of organizing the technological process of software development. The key point is that if information is processed, it must be used for these three elements It explores the interaction of people, technology and process. Types of technological processes and software development models are analyzed. Technological process is the adjusted sequence of interconnected actions, starting from the moment of initial data generation to the preferred result. Technological processes consist of "technological operations", which, in turn, are shaped by "technological transitions." ‚ÄúTechnological transitions‚ÄĚ are called a finished part of technological operation implemented with the same tools of technological supply. In other words, technological process is a part of production process, which includes purposeful actions for the determination of the state of subject of labor. The subject of labor includes software development. Software development process in its production is a process of grouping the implementations into separate stages to prepare and design software, and to improve product and project management. It is also known as a life cycle of software. The methodology may include predefined certain results and artifacts generating and finishing the project for software development together with team. The implementations during the phases of technological and innovation process are explained. The methods for effective organization of technological process of software development are shown. Disadvantages of technological process are examined. Possible risks for software projects and their solution ways are revealed.
Contribution/ Originality
This study contributes in the existing literature of methods of organizing the technological process of software development. Technological process is the adjusted sequence of inter connected actions, starting from the moment of initial data generation to the preferred result. These study users business areas a variety of software.