CAJ | 학술논문

现有自底向上的角色工程方法挖掘规模庞大，系统管理任务繁重，且挖掘结果未能反映系统功能的安全需求。为优化角色挖掘，从终端用户的角度出发，将角色挖掘问题转化为聚类问题，提出一种面向用户的约束角色挖掘优化。该方法利用用户聚类四元组及角色约束优化挖掘过程，以综合评价挖掘效果及系统的安全性，并在构造和真实数据集上进行测试与分析。实验结果表明，该方法能够减轻系统的管理负担，并能保证信息系统的安全性。
현유자저향상적각색공정방법알굴규모방대，계통관리임무번중，차알굴결과미능반영계통공능적안전수구。위우화각색알굴，종종단용호적각도출발，장각색알굴문제전화위취류문제，제출일충면향용호적약속각색알굴우화。해방법이용용호취류사원조급각색약속우화알굴과정，이종합평개알굴효과급계통적안전성，병재구조화진실수거집상진행측시여분석。실험결과표명，해방법능구감경계통적관리부담，병능보증신식계통적안전성。
Results of role mining in large-scale organizations could not reflect requirements of system security in existing approaches to bottom-up role engineering,and system administration tasks were very arduous. In order to opti-mize role mining,an optimization method was proposed from the end-user perspective,which converted the role mining into clustering problem. User-oriented roles constraints and four-tuples of clustering were utilized to optimize the mining process and evaluate the mining effect comprehensively. It was tested on several datasets,both synthetic and real. Exper-imental results showed that,the method not only reduces the burden of administration, but also ensures system security.