@interface _PSFeaturePreprocessor : NSObject + (id)extractFeatureValuesFromFeatureObjects:(id)a0; + (id)featureNameToOneHotEncodedFeatureNameGivenFeatureName:(id)a0 featureValue:(id)a1; + (id)getEnumBasedSuffix:(id)a0 featureValue:(id)a1; + (id)getNumberFromVirtualFeatureValue:(id)a0; + (id)getStringBasedSuffix:(id)a0 featureValue:(id)a1; + (id)oneHotEncodedDictionaryWithCandidateToFeatureVectorDict:(id)a0; + (id)rawDataToCandidateFeatureDict:(id)a0; @end