The existing software engineering seldom considers software usability, and human-computer interaction (HCI) techniques which can improve the software usability cannot guarantee development efficiency. Recently, more and more stakeholders and users begin to regard the usability as an important software requirement. In order to bring respective advantages of software engineering and HCI techniques into full play to improve software usability and development efficiency, the paper presents user model driven software development, which integrates HCI techniques into software development method by eliciting user model under the participation of user, HCI designer and software engineer. Applications show that the method can be effectively applied to small software development team, and can raise software usability and development efficiency.
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