击键动态学
计算机科学
生物识别
分类器(UML)
人工智能
机器学习
随机子空间法
多数决原则
人工神经网络
击键记录
随机森林
集成学习
鉴定(生物学)
数据挖掘
模式识别(心理学)
密码
操作系统
S/键
生物
植物
计算机网络
作者
Lerina Aversano,Mario Luca Bernardi,Marta Cimitile,Riccardo Pecori
出处
期刊:PeerJ
[PeerJ]
日期:2021-05-11
卷期号:7: e525-e525
被引量:4
摘要
During the last years, several studies have been proposed about user identification by means of keystroke analysis. Keystroke dynamics has a lower cost when compared to other biometric-based methods since such a system does not require any additional specific sensor, apart from a traditional keyboard, and it allows the continuous identification of the users in the background as well. The research proposed in this paper concerns (i) the creation of a large integrated dataset of users typing on a traditional keyboard obtained through the integration of three real-world datasets coming from existing studies and (ii) the definition of an ensemble learning approach, made up of basic deep neural network classifiers, with the objective of distinguishing the different users of the considered dataset by exploiting a proper group of features able to capture their typing style. After an optimization phase, in order to find the best possible base classifier, we evaluated the ensemble super-classifier comparing different voting techniques, namely majority and Bayesian, as well as training allocation strategies, i.e., random and K-means. The approach we propose has been assessed using the created very large integrated dataset and the obtained results are very promising, achieving an accuracy of up to 0.997 under certain evaluation conditions.
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