May 23

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Nan Li

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Publications by Nan Li (bibliography)

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2011
 
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Zhang, Daqing, Li, Nan, Zhou, Zhi-Hua, Chen, Chao, Sun, Lin and Li, Shijian (2011): iBAT: detecting anomalous taxi trajectories from GPS traces. In: Proceedings of the 2011 International Conference on Uniquitous Computing 2011. pp. 99-108.

GPS-equipped taxis can be viewed as pervasive sensors and the large-scale digital traces produced allow us to reveal many hidden "facts" about the city dynamics and human behaviors. In this paper, we aim to discover anomalous driving patterns from taxi's GPS traces, targeting applications like automatically detecting taxi driving frauds or road network change in modern cites. To achieve the objective, firstly we group all the taxi trajectories crossing the same source destination cell-pair and represent each taxi trajectory as a sequence of symbols. Secondly, we propose an Isolation-Based Anomalous Trajectory (iBAT) detection method and verify with large scale taxi data that iBAT achieves remarkable performance (AUC>0.99, over 90% detection rate at false alarm rate of less than 2%). Finally, we demonstrate the potential of iBAT in enabling innovative applications by using it for taxi driving fraud detection and road network change detection.

© All rights reserved Zhang et al. and/or ACM Press

2010
 
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Ispas, Adriana, Li, Nan, Norrie, Moira C. and Signer, Beat (2010): Paper-Digital Meeting Support and Review. In: Proceedings of CollaborateCom 2010, 6th International Conference on Collaborative Computing October, 2010, Chicago, USA. .

2005
 
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Li, Nan (2005): Dynamic nature of trust in e-commerce. In: Li, Qi and Liang, Ting-Peng (eds.) Proceedings of the 7th International Conference on Electronic Commerce - ICEC 2005 August 15-17, 2005, Xian, China. pp. 226-229.

 
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05 Apr 2012: Added
14 Jan 2011: Added
10 Feb 2010: Modified
30 May 2009: Added

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May 23

Knowledge is commonly socially constructed, through collaborative efforts towards shared objectives or by dialogues and challenges brought about by different persons' perspectives.

-- G. Salomon (in "Distributed Cognitions: Psychological and Educational Considerations")

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Help us help you!