An anonymous reader writes: Chinese web services giant, Baidu, has embarked on a new study in which it uses location information from users' mobile devices, as well as mapping and building data, to identify areas with high volumes of construction with relatively low population densities — known as 'ghost cities.' The researchers, in the published findings Ghost Cities: Analysis Based on Positioning Data in China, were able to discount areas which experienced high levels of tourism which skew the figures in peak seasons. The Baidu Big Data team discovered 50 ghost cities, although only 20 of these were revealed in the report to avoid potential harm to the real estate market in these areas.
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