第二次学习笔记

过拟合、欠拟合及其解决方案; 过拟合、欠拟合的概念 权重衰减 丢弃法 梯度消失、梯度爆炸; 用房价预测的例子体现: 关于房价的预测,定义这个预测函数 def train_and_pred(train_features, test_features, train_labels, test_data, num_epochs, lr, weight_decay, batch_size): net = get_net(train_features.shape[1]) train_ls, _ = train(net, train_features, train_labels, None, None, n