这是在模拟你睡着时自然而然会做的动作，而且这也许有助于刺激睡眠激素和褪黑激素的释放。
It simulates what you do naturally when you fall asleep and may help trigger the release of your sleepy hormone, melatonin.
方法运用实例和模拟数据说明传统方法灵敏度和特异度的有偏估计，并运用最大似然估计和贝叶斯估计对灵敏度和特异度进行校正。
MethodsComparing the estimate of sensitivity and specificity by traditional, frequency and Bayesian method. The estimators are illustrated using data from reviewing issues and simulating the data.
计算机模拟表明，在加性高斯噪声下，使用该神经网络可以达到最大似然译码。
The computer simulation shows that the decoder can achieve maximum likelihood decoding in the environmemts of additive white Gaussian noise.
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