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 Hairuo Xie

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Average citations per article2.10
Citation Count21
Publication count10
Publication years2007-2017
Available for download6
Average downloads per article39.50
Downloads (cumulative)237
Downloads (12 Months)138
Downloads (6 Weeks)43
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1 published by ACM
November 2017 SIGSPATIAL'17: Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Publisher: ACM
Citation Count: 0
Downloads (6 Weeks): 9,   Downloads (12 Months): 9,   Downloads (Overall): 9

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Traffic congestion is a serious problem that is only expected to get worse in the future. Statistics shows that half of traffic congestion is caused by temporary disruptions like accidents. These events have dramatic impact on road network availability and cause huge delays for commuters. Also, they are usually unexpected ...
Keywords: Location-based Social Networks, Spatial Databases

2 published by ACM
November 2017 SIGSPATIAL'17: Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Publisher: ACM
Citation Count: 0
Downloads (6 Weeks): 18,   Downloads (12 Months): 18,   Downloads (Overall): 18

Full text available: PDFPDF
Distributed spatial simulations commonly employ Bulk Synchronous Parallel model (BSP) implementation. However, implementations using BSP are usually fraught with the straggler problem, where the delay of any worker slows down the entire system. Random stragglers commonly occur due to many reasons: imbalanced workload, operating system scheduling, or communication delays. The ...
Keywords: Distributed computing, Traffic simulation, BSP, Road network partitioning

3 published by ACM
December 2016 ACM Transactions on Intelligent Systems and Technology (TIST) - Survey Paper, Special Issue: Intelligent Music Systems and Applications and Regular Papers: Volume 8 Issue 2, January 2017
Publisher: ACM
Citation Count: 0
Downloads (6 Weeks): 8,   Downloads (12 Months): 75,   Downloads (Overall): 81

Full text available: PDFPDF
Microscopic traffic simulators are important tools for studying transportation systems as they describe the evolution of traffic to the highest level of detail. A major challenge to microscopic simulators is the slow simulation speed due to the complexity of traffic models. We have developed the Scalable Microscopic Adaptive Road Traffic ...
Keywords: Microscopic traffic simulation, distributed computing

4 published by ACM
November 2015 IWCTS'15: Proceedings of the 8th ACM SIGSPATIAL International Workshop on Computational Transportation Science
Publisher: ACM
Citation Count: 0
Downloads (6 Weeks): 6,   Downloads (12 Months): 6,   Downloads (Overall): 6

Full text available: PDFPDF
Route planning in current route guidance systems is primarily based on the shortest path strategy (e.g., suggesting a path that minimizes the travel distance between source and destination) for an individual driver. A drawback of such an approach is that there is a high probability that many drivers, who share ...

5 published by ACM
October 2015 LSDS-IR '15: Proceedings of the 2015 Workshop on Large-Scale and Distributed System for Information Retrieval
Publisher: ACM
Citation Count: 0
Downloads (6 Weeks): 1,   Downloads (12 Months): 21,   Downloads (Overall): 39

Full text available: PDFPDF
Counts of objects are important for big data analytics. However, spatial objects do not work well with counts. We present the latest developments on distinct counting problem. In particular, we explain Euler Histograms, which are a category of spatial data structures that address the distinct counting challenges. Euler histograms support ...
Keywords: aggregate query, spatial histogram

6 published by ACM
November 2014 IWCTS '14: Proceedings of the 7th ACM SIGSPATIAL International Workshop on Computational Transportation Science
Publisher: ACM
Citation Count: 2
Downloads (6 Weeks): 3,   Downloads (12 Months): 10,   Downloads (Overall): 60

Full text available: PDFPDF
This work addresses the problem of aggregation of trajectories data. Specifically, we propose a tree-based data structure for counting vehicle trajectories by mapping them into a set of spatial histograms with different granularities. We also present an approach for processing spatio-temporal range queries by aggregating the histograms in the query ...
Keywords: spatial histogram, aggregate query, hierarchical data structure

June 2011 Data & Knowledge Engineering: Volume 70 Issue 6, June, 2011
Publisher: Elsevier Science Publishers B. V.
Citation Count: 2

Privacy concerns can be a major barrier to collecting aggregate data from the public. Recent research proposes negative surveys that collect negative data, which is complementary to the true data. This opens a new direction for privacy-aware data collection. However, the existing approach cannot avoid certain errors when applied to ...
Keywords: Negative surveys, Privacy, Aggregate query, Geographic information system, Spatio-temporal databases

March 2010 IEEE Transactions on Intelligent Transportation Systems: Volume 11 Issue 1, March 2010
Publisher: IEEE Press
Citation Count: 5

Traffic-monitoring systems (TMSs) are vital for safety and traffic optimization. However, these systems may compromise the privacy of drivers once they track the position of each driver with a high degree of temporal precision. In this paper, we argue that aggregated data can protect location privacy while providing accurate information ...
Keywords: Privacy, privacy, road transportation, road vehicle identification, road vehicle location monitoring, spatial data structures

May 2007 MDM '07: Proceedings of the 2007 International Conference on Mobile Data Management
Publisher: IEEE Computer Society
Citation Count: 8

May 2007 Information Systems: Volume 32 Issue 3, May, 2007
Publisher: Elsevier Science Ltd.
Citation Count: 3

Companies, government agencies, and other organizations are making their data available to the world over the Internet. They often use large online relational tables for this purpose. Users query such tables with front-ends that typically use menus or form fillin interfaces, but these interfaces rarely give users information about the ...
Keywords: Information visualization, Online querying, World-wide web, Internet

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