似然比检测

词组短语

likelihood ratio test

与似然比检测相关的网络例句 [注：此内容来源于网络，仅供参考]

Adopt the generalized maximum likelihood radio test based on the Neyman-Pearson algorithm, to study two unresolved Rayleigh targets. And deduced the detection statistic which is chi-square random variable, which only need to know the conditional probability density functions of echo's measured amplitude, in-phase and quadrature of monopulse radio, but the signal-to-noise radio and the direction-off-arrival of any signal are unnecessary.

采用基于涅曼-皮尔逊准则的广义似然比检测，对不可分辨的两个瑞利目标进行了研究，推出了服从χ2分布的检验统计量，此方法只需要知道目标回波信号测量幅值的条件概率密度函数、单脉冲和差比值的同相和正交部分，而不需要任一目标信号的信噪比和DOA的先验知识。

Then based on the temporal difference models, we formulate the detection problem in 2 steps, correlation detection and generalized likelihood ratio test.

然后基于时域差分模型提出了红外慢速小目标时域检测算法，算法共分为两步：相关检测和广义似然比检测。

R and S type LTSs are proposed.It is proved that the optimal distributed CFAR detection based on the above two LTSs in NP sense is in form of likelihood ratio test.

提出了R类和S类局部检测统计量，证明了基于这两种局部检测统计量的在NP意义上的最优分布式CFAR检测具有似然比检验形式。

Based on the study of Likelihood Ratio Test voice activity detection algorithm and discussion about decision-directed LRT and smoothed LRT voice activity detection algorithms, we proposed a novel voice activity detection algorithm for improving speech detection robustness in noisy environments.

深入研究了基于似然比测试的语音激活检测算法，并对基于直接决策似然比测试的语音激活检测算法和基于平滑似然比测试的语音激活检测算法进行了讨论。

Based on region segmentation, this paper adapt a new change detection technique that make use of region likelihood ratio.

针对传统基于像素的变化检测方法受speckle噪声影响严重的问题，在区域分割的基础上，提出似然比检测的方法，获得了良好的检测结果。

Methods Sera derived from 226 SLE cases and 183 healthy controls were tested for ANA and all parameters were compared such as sensi- tivity,specificity,accuracy,positive predictive value,negative predictive value,positive likelihood ratio,nega- tive likelihood ratio,result consistency,rank correlation coefficient and kappa of ANA detected by IFA...

方法同时采用IFA法和ELISA法检测血清ANA共409例，其中SLE 226例和健康对照183名，将两种方法检测结果的敏感度、特异度、准确度、阳性预测值、阴性预测值、阳性似然比、阴性似然比、结果符合率、判断一致性κ值及秩相关系数进行比较分析；通过ROC曲线比较两种方法的准确度；结果不一致标本进行可提取性核抗原抗体谱检测分析；同时将IFA法检测不同荧光模型样本分别与ELISA结果进行相关分析。

The application of nonextensive distribution model for sea clutter modeling and small targets detecting is improved. Surrogate data method is used to analyze nonlinear character of sea clutter.

本文分析了海杂波在统计模型建模后运用最大似然比检测准则下，很难检测出弱小目标的缺陷，改进了非广延分布模型在海杂波建模和弱小目标检测领域的应用。

The sensitivity, specificity, accuracy, positive prevalue, negative prevalue, positive likelihood ratio and negative likelihood ratio of hc2 for high-risk HPV were 100%, 87. 1%, 87. 3%, 8.8%, 100%, 7.7 and 0. 000 , respectively ; and those of gene chips were 78.6%, 91.1%, 90. 9%, 9.9%, 99.7%, 8.8 and 0. 235 respectively.

HC2法检测高危HPV对高度宫颈上皮内瘤样病变HSIL的灵敏度、特异度、准确性、阳性预测值、阴性预测值、阳性似然比和阴性似然比分别为100ˇ、87ˇ1ˇ、87ˇ3ˇ、8ˇ8ˇ、100ˇ、7ˇ7和0ˇ000ˇHPV分型基因芯片法以上各指标分别为78ˇ6ˇ、91ˇ1ˇ、90ˇ9ˇ、9ˇ9ˇ、99ˇ7ˇ、8ˇ8和0ˇ235。

A simplified LLR ordering scheme employed in uncoded systems and an exact LLR ordering scheme employed in coded systems are proposed.

在未编码情况下给出使用线性检测器近似的对数似然比信息排序方法，在迭代检测解码情况下给出使用解码器反馈的比特后验信息进行对数似然比排序的方法。

Acute pancreatitis patients were grouped as MAP and SAP after 72 h according to the clinical manifestations. Results:All the indexes were significantly higher in the AP group（P.05）. Urinary trypsinogen activation peptide and serum procalcitonin were increased significantly after 48 h.The sensitivity、specificity and positive likelihood rate of TAP and PCT were 90.5％,87.5％,7.2 and 90.5％,82.5％,7.2 respectively.

结果：急性胰腺炎组与非急性胰腺炎组各项检测结果均存在显著性差异（P.05），各检测指标的敏感度、特异性和阳性似然比存在一定差异，尿TAP和血清PCT在入院48 h后统计效能最高，尿TAP敏感度、特异度以及阳性似然比分别为90.5％、87.5％和7.2；血清PCT敏感度、特异度及阳性似然比分别为90.5％、82.5％和7.2。