Ngan writes, " What is the difference between 'how do you feel'? and 'how are you'? "

" ‘how do you feel’？ 和 ‘how are you’？之间的区别是什么？"

Some of these systems performed " significantly better" than the earlier ones, the NIST's Mei Ngan said in a statement on Tuesday.

美国国家标准与技术研究所的Mei Ngan在周二的一份声明中表示，其中一些系统的性能相比之前" 明显好了很多" 。

" In the best cases, software algorithms are making errors between 2.4 and 5 percent of the time on masked faces, " Ngan said.

" 在最好的情况下，软件算法识别戴口罩面孔时的错误率在2。4%到5%之间。"