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iii Abstract The progresses in the fields of mobile Internet and positioning methods have lead to a plethora of new possibilities for cartography in mobile usage environments. However, principles of web mapping cannot simply be transferred to the mobile environment. Likewise the availability of Location Based Services (LBS) has made it possible to develop(More)
1 Introduction Many cartographic applications require the interoperation between datasets of different spatial and semantic resolutions covering the same geographic space. One of the approaches to realize the interoperation is to build a multiple representation database (MRDB) in which corresponding objects at different resolutions are connected to each(More)
Understanding taxi mobility has significant social and economic impacts on the urban areas. The goal of this paper is to visualize and analyze the spatiotemporal driving patterns for two income-level groups, i.e. high-income and low-income taxis, when they are not occupied. Specifically, we differentiate the cruising and stationary states of non-occupied(More)
Adaptive geovisualization has been marked as a research front that addresses design issues of a user-centered geovisualization system. By constantly keeping trace of user actions, a highly adaptive geovisualization system is able to predict the behavior of its end user and accordingly provide him with the visualization that suits best his personal taste and(More)
Map matching of the GPS trajectory serves the purpose of recovering the original route on a road network from a sequence of noisy GPS observations. It is a fundamental technique to many Location Based Services. However, map matching of a low sampling rate on urban road network is still a challenging task. In this paper, the characteristics of Conditional(More)