IEEE Transactions on Knowledge and Data Engineering
IEEE Transactions on Knowledge and Data Engineering (TKDE) is an archival journal published monthly designed to inform researchers, developers, managers, strategic planners, users, and others interested in state-of-the-art and state-of-the-practice activities in the knowledge and data engineering area. Read the full scope of TKDE
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From the February 2017 issue
Citywide Traffic Volume Estimation Using Trajectory Data
By Xianyuan Zhan, Yu Zheng, Xiuwen Yi, and Satish V. Ukkusuri
Traffic volume estimation at the city scale is an important problem useful to many transportation operations and urban applications. This paper proposes a hybrid framework that integrates both state-of-art machine learning techniques and well-established traffic flow theory to estimate citywide traffic volume. In addition to typical urban context features extracted from multiple sources, we extract a special set of features from GPS trajectories based on the implications of traffic flow theory, which provide extra information on the speed-flow relationship. Using the network-wide speed information estimated from a travel speed estimation model, a volume related high level feature is first learned using an unsupervised graphical model. A volume re-interpretation model is then introduced to map the volume related high level feature to the predicted volume using a small amount of ground truth data for training. The framework is evaluated using a GPS trajectory dataset from 33,000 Beijing taxis and volume ground truth data obtained from 4,980 video clips. The results demonstrate effectiveness and potential of the proposed framework in citywide traffic volume estimation.
Editorials and Announcements
- We are pleased to announce that Xuemin Lin, a Scientia Professor in the School of Computer Science and Engineering at the University of New South Wales, Australia, has been named the new Editor-in-Chief of the IEEE Transactions on Knowledge and Data Engineering starting in 2017.
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- TKDE celebrates its 25th Anniversary. Editor-in-Chief Jian Pei says, "We are celebrating the 25th Anniversary of TKDE. Since its first issue in March 1989, TKDE has published 2,981 articles, and another 220 articles in the early access portal. With 898 submissions and 79 accepted articles in 2012, TKDE is now the premier journal in the broad and general fields of data management, data mining, and knowledge engineering. We thank all the authors, reviewers, and readers for their continuing support to TKDE. As always, we are eager to hear your ideas and suggestions, and will do our best to meet your expectations. With all your passions, contributions, and supports, TKDE is embracing the new era of big data and big data analytics. Happy birthday to TKDE!"
- Editorial (January 2017)
- EIC Editorial (October 2016)
- In Memoriam: Chittoor V. Ramamoorthy, PhD 1926-2016 (June 2016)
- State of the Journal (January 2016)
- Editorial (August 2015)
- State of the Journal Editorial (January 2015)
- Editorial: State of the Transactions (January 2014)
- Editorial (August 2013)
- New EIC Editorial (February 2013)
- Outgoing EIC Editorial (February 2013)
- State of the Journal (February 2012)
- EIC Editorial (January 2011)
- Special Section on the International Conference on Data Engineering (February 2016)
- Special Section on the International Conference on Data Engineering (July 2015)
- Special Section on the International Conference on Data Engineering (June 2014)
- Special Section on the 27th International Conference on Data Engineering (ICDE 2011)(Oct 2012)
- Special Section on Keyword Search on Structured Data (Dec 2011)
- Cloud Data Management (Sept 2011)
- Special Section on the 26th International Conference on Data Engineering (Aug 2011)
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