问题描述
我正在使用weka的 smo
类编写分类代码。但我还没有找到一个实例分类的置信度量。当调用 distributionForInstance
时,它总是返回0或1。我有两个课程要分类。知道我怎么能得到这个措施?谢谢。
I'm writing a classification code using the smo
class of weka. But what i'm yet to find is a confidence measure of the classification of an instance. It always either returns 0 or 1 when distributionForInstance
is called. I have two classes to be classified into. Any idea how i can get this measure? Thanks.
推荐答案
好的我想出了如何得到它以防万一它可以帮助某人。获取 SMO.java
的源代码并将其添加到您的包中。如果有的话,解决进口。将 m_fitLogisticModels
设置为 true
。将 smo.buildClassifier(train,cl1,cl2,false,-1,-1);
更改为 smo.buildClassifier(train,cl1,cl2, true,-1,-1);
。而中提琴! distributionForInstance
返回置信度分数而不是硬0/1。
Ok I figured out how to get this in case it might help someone. Get the source code for SMO.java
and add it to your package. Resolve imports if any. Set m_fitLogisticModels
to true
. Change smo.buildClassifier(train, cl1, cl2, false, -1, -1);
to smo.buildClassifier(train, cl1, cl2, true, -1, -1);
. And viola ! distributionForInstance
returns confidence scores instead of a hard 0/1.
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