The construction of CNL rules in mobile GIS

Natural language has been considered as one of the most habitual and effective ways of human-computer interaction (HCI). This paper proposes the constrained principles in the perspective of mobile GIS nature language, and it also restricts understanding of natural language in the domain of the specific application in mobile GIS. For implementing the interaction between mobile GIS and users with nature language, we should establish the grammar rules and the understanding method of these rules in the view of system control and spatial information inquiry. We use speech technology and mobile GIS to carry human-computer interaction out in order to achieve a friendlier, more intelligent, and easier operated way for the visit of user and the expression of information. It can promote mobile GIS to a state which is more intelligent and socialized and also improve its degree of practicality.