摘要： 这三个名词在机器学习领域的文章中极其常见，但很多人对他们的概念并不是特别清楚，尤其是后两个经常被人混用。Ripley, B.D（1996）在他的经典专著Pattern Recognition and Neural Networks中给出了这三个词的定义。 Training set: A set of examples used for learning, which is to fit the parameters [i.e., weights] of the classifier. Validation set: A set of examples used to tune the para 阅读全文