抄録
Popularization of information communication technology has increased the importance of user-centered design approaches. For instance, user experience considerations propose to influence not only devices functions but also users behaviors. The authors propose a conceptual model of use by applying the user-oriented and function-oriented models to generate relationships between user and functions depending on circumstances. This study examines the possibility of quantitatively understanding use by applying the conceptual model. For this purpose, we adopt user-experience evaluation references, which are derived from previous studies to quantitatively understand the use of a device. The text-mining method was used to analyze the description of web logs on the first-generation iPad, which is a representative product considering user experience. The results indicate that the use of an iPad could be inferred from the user-oriented model and the importance to stimulate lifelike behaviors that are free of operating and setting functions. The conclusion indicates the usefulness of this method to clarify the situation where activated the user behavior.