Recently, a cryptographic construct,called fuzzy vault, has been proposed for crypto-biometric systems, and some implementations for fingerprint have been reported to protect the stored fingerprint template by hiding ...Recently, a cryptographic construct,called fuzzy vault, has been proposed for crypto-biometric systems, and some implementations for fingerprint have been reported to protect the stored fingerprint template by hiding the fingerprint features. However, all previous studies assumed that fingerprint features were pre-aligned, and automatic alignment in the fuzzy vault domain is a challenging issue.In this paper, an auto-aligned sharing fuzzy fingerprint vault based on a geometric hashing technique is proposed to address automatic alignment in the multiple-control fuzzy vault with a compartmented structure. The vulnerability analysis and experimental results indicate that, compared with original multiplecontrol fuzzy vault, the auto-aligned sharing fuzzy fingerprint vault can improve the security of the system.展开更多
当前广告界面创意元素特征提取矩阵一般为单结构独立测定,提取的效率较低,导致曲线下面积(Area Under Curve,AUC)平均值下降,为此提出对审美角度下平面广告界面创意元素特征提取方法的设计与验证分析。测试结果表明:经过4个周期的测定,...当前广告界面创意元素特征提取矩阵一般为单结构独立测定,提取的效率较低,导致曲线下面积(Area Under Curve,AUC)平均值下降,为此提出对审美角度下平面广告界面创意元素特征提取方法的设计与验证分析。测试结果表明:经过4个周期的测定,针对user+ad+history、user+ad、ad+history及user+history4种组合特征单元,最终进行特征提取得出的AUC平均值在第4个周期均在0.65以上,说明在审美角度下,当前特征提取形式更加真实、贴合需求,提取精准度更高,具有实际应用价值。展开更多
文摘Recently, a cryptographic construct,called fuzzy vault, has been proposed for crypto-biometric systems, and some implementations for fingerprint have been reported to protect the stored fingerprint template by hiding the fingerprint features. However, all previous studies assumed that fingerprint features were pre-aligned, and automatic alignment in the fuzzy vault domain is a challenging issue.In this paper, an auto-aligned sharing fuzzy fingerprint vault based on a geometric hashing technique is proposed to address automatic alignment in the multiple-control fuzzy vault with a compartmented structure. The vulnerability analysis and experimental results indicate that, compared with original multiplecontrol fuzzy vault, the auto-aligned sharing fuzzy fingerprint vault can improve the security of the system.
文摘当前广告界面创意元素特征提取矩阵一般为单结构独立测定,提取的效率较低,导致曲线下面积(Area Under Curve,AUC)平均值下降,为此提出对审美角度下平面广告界面创意元素特征提取方法的设计与验证分析。测试结果表明:经过4个周期的测定,针对user+ad+history、user+ad、ad+history及user+history4种组合特征单元,最终进行特征提取得出的AUC平均值在第4个周期均在0.65以上,说明在审美角度下,当前特征提取形式更加真实、贴合需求,提取精准度更高,具有实际应用价值。