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. Evaluating the Representativeness in the Geographic Distribution of Twitter User Population. The 12th Workshop on Geographic Information Retrieval in ACM SIGSPATIAL 2018, November 6-9, 2018, Seattle, Washington, USA, 2018.

. Outlier Detection and Comparison of Origin-Destination Flows Using Data Depth. 10th International Conference on Geographic Information Science (GIScience 2018), August 28-31, 2018, Melbourne, Australia, 2018.

. Mapping Spatiotemporal Patterns of Events Using Social Media: A Case Study of Influenza Trends. International Journal of Geographical Information Science, 32(3), pp. 425-449, 2018.

. Social sensing of urban land use based on analysis of Twitter users’ mobility patterns. PLoS ONE, 12(7):e0181657. DOI:10.1371/journal.pone.0181657, 2017.

. A Topology-concerned Spatial Vector Data Model for Column-oriented Databases. International Journal of Database Theory and Application, 10(5), pp. 33-46, 2017.

. Delineate Urban Boundaries in Great Britain from the Network of Large Scale Twitter User Spatial Interactions. International Journal of Geographical Information Science, 31(7), pp. 1293-1313, 2017.

. Exploring Multi-Scale Spatiotemporal Twitter User Mobility Patterns with a Visual-Analytics Approach. ISPRS International Journal of Geo-Information, 5(10):187, 2016.

. Spatial Distribution of City Tweets and Their Densities. Geographical Analysis, 48, pp. 337–351, 2016.

. Zipf’s law for all the natural cities around the world. International Journal of Geographical Information Science, 29(3), pp. 498-522, 2015.

. Ht-index for quantifying the fractal or scaling structure of geographic features. Annals of the Association of American Geographers, 104(3), pp. 530-540, 2014.

. Spatial Search Techniques for Mobile 3D Queries in Sensor Web Environments. ISPRS International Journal of Geo-Information, 2(1), pp. 135-154, 2013.

. Mobile visibility querying for LBS. Transactions in GIS, 14(6), pp. 791-809, 2010.

. Characterizing the human mobility pattern in a large street network. Physical Review E, 80(2), 021136, 2009.

. Self-organized natural roads for predicting traffic flow: a sensitivity study. Journal of statistical mechanics: Theory and experiment, 80(2), 021136, 2008.