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基于得分规整的说话人确认
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作者 曹伟 梁春燕 《智能计算机与应用》 2020年第10期19-22,26,共5页
对于说话人确认系统,由于不同识别对得分分布的差异性,如果对原始得分直接使用统一门限判决,会严重影响系统的性能,因此需要对得分进行规整。针对现有得分规整方法的不足,本文提出一种基于对数似然值归一化(Log-likelihood Normalizatio... 对于说话人确认系统,由于不同识别对得分分布的差异性,如果对原始得分直接使用统一门限判决,会严重影响系统的性能,因此需要对得分进行规整。针对现有得分规整方法的不足,本文提出一种基于对数似然值归一化(Log-likelihood Normalization,LLN)得分规整的说话人确认系统。LLN在不需要先验知识的情况下,通过扩大同一测试语音在目标说话人模型与非目标说话人模型上的得分差距,使同一测试语音对应的两类识别对得分混叠现象得到有效改善,进而利于系统的区分判决。实验证明,LLN是一种有效的得分规整方法,且与已有的零规整和测试规整形成互补,可进一步提高说话人确认系统的性能。 展开更多
关键词 说话人确认 得分规整 对数似然值归一化 规整 测试规整
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A hybrid algorithm based on ILP and genetic algorithm for time-aware test case prioritization 被引量:1
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作者 Sun Jiaze Wang Gang 《Journal of Southeast University(English Edition)》 EI CAS 2018年第1期28-35,共8页
To solve the problem of time-awarc test case prioritization,a hybrid algorithm composed of integer linear programming and the genetic algorithm(ILP-GA)is proposed.First,the test case suite which cm maximize the number... To solve the problem of time-awarc test case prioritization,a hybrid algorithm composed of integer linear programming and the genetic algorithm(ILP-GA)is proposed.First,the test case suite which cm maximize the number of covered program entities a d satisfy time constraints is selected by integer linea progamming.Secondly,the individual is encoded according to the cover matrices of entities,and the coverage rate of program entities is used as the fitness function and the genetic algorithm is used to prioritize the selected test cases.Five typical open source projects are selected as benchmark programs.Branch and method are selected as program entities,and time constraint percentages a e 25%and 75%.The experimental results show that the ILP-GA convergence has faster speed and better stability than ILP-additional and IP-total in most cases,which contributes to the detection of software defects as early as possible and reduces the software testing costs. 展开更多
关键词 test case prioritization integer linear programming(I LP) genetic algorithm time constraint
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