Search engines are still the most common way of finding information on the Web. However, they are largely unable to provide satisfactory answers to time and location-specific queries. Such queries can best and often only be answered by humans that …
In the offline world, getting to know new people is heavily influenced by people’s physical context, that is, their current geolocation. People meet in classes, bars, clubs, public transport, and so on. In contrast, first-generation online social …