fixed class中文什么意思

例句与用法

1. without fixed class organizational system, the own arrangement such as means of plan of the study need that the student can press him, study, study learns
   没有固定的班级建制，学生可以按自己的学习需要、学习进度、学习方式等自主安排学习。
2. the algorithms of text classification are supervised, which means the classifier training need some human labeled data of fixed classes . generally, the accuracy of classifier is higher with more labeled data . but the labeled data by hand are expensive resource
   文本分类算法是有监督的学习算法，它需要一个分类好的，类别已标识的文本数据集训练分类器，然后用训练好的分类器对未标识类别的文本分类。