However, in practical applications such as computer aided diagnosis (CAD) of medical images, unlabeled data are readily available but labeled data are fairly expensive to obtain because they require human effort.
但在计算机辅助医学图像诊断等实际应用中,对数据进行人工标记的代价很高,容易获取的是大量无标记数据。
参考来源 - 基于“合作—参与”计算认知模型的半监督学习算法研究与应用·2,447,543篇论文数据，部分数据来源于NoteExpress
如果你想使用有监督的学习算法，你需要标记数据。
If you want to use some supervised learning algorithm, you need labeled data.
首先，它要求我们标记数据，以便随后我们可以确定数据的日期。
First, it requires us to mark the data so that we can later determine how old it is.
它通过鉴定模式和流媒体模式来识别数千小时的归档和未标记数据。
It works in both forensic mode to identify activities in thousands of hours of archived, untagged data and in streaming mode.
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