In this paper, we propose a system to users which recommends suitable park using linguistic objects by rule-based inference engine which is made with Prolog. According to the function of city park, which
provides positive elements to people such as social, psychological, environmental, and physical, Seoul city
park is classified into 6 categories. The classified parks are recommended to users based on the rule based
expert system. Rule-based object of park recommendation designs nine linguistic objects based on activity,
multi-purposiveness, accessibility, and usage of time. This assigns allowed value accordingly. Generated
rules by using these values are fired by user’s preference, and infer recommended park. Information on
preferences is obtained by way of dialogue, in which the user is asked questions about the three elements
that are the criteria for choosing a park. As a result, through the park recommendation system, we intend
to increase the user’s satisfaction of using park and leisure activities.