“…The development of location service mainly needs to attach importance to two aspects of abilities: The ability to provide the location and the ability to understand the location. In terms of the provision of location, along with the development of the indoor and outdoor seamless positioning technology and the enhanced system technology, the positioning accuracy is improved constantly (Mohanty, Jagadeesh and Srivatsa, 2013;Wu and Ester, 2015;Zeng, Sun, Duan, Liu and Wang, 2013), which has basically met the need of production and life of people in the mass application level; In terms of the ability to understand the location, however, there are a lot of challenges at present, which is the hot spot of attention of the academia and industry. Understanding the location is actually to understand the human activities, human emotions and human environment reflected from the location, therefore, it is also known as ubiquitous mapping or location-based social awareness (Gomes, Gaber, Sousa and Menasalvas, 2013;Balamurugan, Bhuvana and Pandian, 2012;Langseth and Nielsen, 2012).…”