Uses of Class
com.hankcs.hanlp.classification.features.BaseFeatureData

Packages that use BaseFeatureData

Package	Description
com.hankcs.hanlp.classification.classifiers
com.hankcs.hanlp.classification.features

Uses of BaseFeatureData in com.hankcs.hanlp.classification.classifiers

Methods in com.hankcs.hanlp.classification.classifiers that return BaseFeatureData

Modifier and Type	Method and Description
protected BaseFeatureData	NaiveBayesClassifier.selectFeatures(IDataSet dataSet) 统计特征并且执行特征选择，返回一个FeatureStats对象，用于计算模型中的概率

Uses of BaseFeatureData in com.hankcs.hanlp.classification.features

Subclasses of BaseFeatureData in com.hankcs.hanlp.classification.features

Modifier and Type	Class and Description
class	DfFeatureData 包含倒排文档频次的特征数据

Methods in com.hankcs.hanlp.classification.features that return BaseFeatureData

Modifier and Type	Method and Description
static BaseFeatureData	ChiSquareFeatureExtractor.extractBasicFeatureData(IDataSet dataSet) 生成一个FeatureStats对象，包含一个分类中的所有词语，分类数，实例数。这些统计数据 将用于特征选择算法。

Methods in com.hankcs.hanlp.classification.features with parameters of type BaseFeatureData

Modifier and Type	Method and Description
Map<Integer,Double>	ChiSquareFeatureExtractor.chi_square(BaseFeatureData stats) 使用卡方非参数校验来执行特征选择 https://nlp.stanford.edu/IR-book/html/htmledition/feature-selectionchi2-feature-selection-1.html