/**
* 计算P(feature|cateogry),返回的是取对数后的数值
*
* @param feature
* @param category
* @return
*/
public double getFeatureProbability(String feature, String category) {
int m = VARIABLE.getFeatureCount();
return Math.log(
(VARIABLE.getDocCount(feature, category) + 1.0) / (VARIABLE.getDocCount(category) + m));
}
/**
* 计算P（C)=该类型文档总数/文档总数，返回的数对数值
*
* @param category
* @return
*/
public double getCategoryProbability(String category) {
return Math.log(VARIABLE.getDocCount(category) * 1.0f / VARIABLE.getDocCount());
}