標題: | The Novel Positioning Algorithm Based on Cloud Computing - A Case Study of Intelligent Transportation Systems |
作者: | Chen, Chi-Hua Lin, Bon-Yeh Chang, Hsu-Chia Lo, Chi-Chun 資訊管理與財務金融系 註:原資管所+財金所 Department of Information Management and Finance |
關鍵字: | Intelligent Transportation System;Cellular Network;Traffic Information;Cloud Computing |
公開日期: | 1-十一月-2012 |
摘要: | In recent year, the development of intelligent transportation system (ITS) has become more and more popular to improve the road safety and traffic efficiency amid the global trend of rapid urbanization and population growth. The traffic information estimations from cellular network data are more immediately, cost-effective, and easy to deploy and maintain than traditional methods. Therefore, we propose a novel speed estimation method based on fingerprint positioning algorithm (FPA). In experiments, we compare the estimated positioning information and speed information with the real information obtained from global position system (GPS) receiver. The results show that the average error of location determination by using FPA is 36.11 meters. For speed estimation, the average error ratio of speed estimation by using FPA is 3.39%. Finally, we adopt the MapReduce algorithm and propose a modified column-based data model (CDM) scheme to solve the space-wasting and time-wasting problems which are due to the sparse matrices generated by FPA. This approach will be feasible to estimate the overall traffic information for ITS improvement. |
URI: | http://hdl.handle.net/11536/20661 |
ISSN: | 1343-4500 |
期刊: | INFORMATION-AN INTERNATIONAL INTERDISCIPLINARY JOURNAL |
Volume: | 15 |
Issue: | 11A |
起始頁: | 4519 |
結束頁: | 4524 |
顯示於類別: | 期刊論文 |