关键词: 击键动态, 模板更新, 联合决策

Abstract: Affected by hardware, environment, emotions and other factors, the keystrokes behaviors of users show diversity. The single keystroke center and tolerance radius of a single template can only describe basic behavior patterns of users. But in the actual situation, behavior patterns of users are diverse which can not fully described by the single template method. Multi-template joint decision updating method analyzes multiple template test results to determine the user behavior legitimacy. At the same time, it optimizes the template set by adjusting every template decision weight and updating the poorer conclusion template with better one. Compared with normal multi-template detection method, multi-template joint decision updating method reduces the error detection rate.

Key words: keystroke dynamics, template update, joint decision-making