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A large number of people are exposed to noise pollution every day, which can cause severe illnesses. In this case, noise maps as a visual representation of the noise level in urban areas can help to assess noise pollution. Current noise maps are either based on simulations or small amounts of measur ...

Real-time information from microblogs like Twitter is useful for different applications such as market research, opinion mining, and crisis management. For many of those messages, location information is required to derive useful insights. Today, however, only around 1% of all tweets are explicitly ...