Mahout:DataModel doesn't have preference values
Mahout in Action 在第3.3节 Coping without preference values 提到了没有偏好值的数据场景,能够得到1~5分偏好评分的场景太难了,这需要有一个略微复杂点的价值判断过程.相比之下,"顶"和"踩"就来的简单的多.看下面的图,对于布尔型数据模型,已经简化成为:喜欢,不喜欢,不知道 作者给出了一个"样例代码",这段样例代码运行到最后是会抛出
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