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Understanding taxi mobility has significant social and economic impacts on the urban areas. The goal of this paper is to visualize and analyze the spa-tiotemporal 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)
This paper explores the use of ontology based methods to determine the geographic locations of Chinese offset addresses. Offset addresses are those addresses which contain a natural language location description reference to another location. The study has two parts, 1) the definition of a geo-spatial ontology for Chinese addresses, and 2) the design of(More)
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