@interface _PSHistogramFeatures : NSObject + (int)bucketCounttimeIntervalForFeatureName:(int)a0; + (id)computeFactorNameForFeature:(id)a0; + (id)conditionedProbabilityAcrossAllBucketsWithCandidates:(id)a0 featureName:(int)a1 predictionContext:(id)a2 histogramFeatureData:(id)a3 histogramSmoothingParameterK:(id)a4 histogramSmoothingParameterV:(id)a5; + (id)conditionedProbabilityAcrossAllCandidatesWithCandidates:(id)a0 featureName:(int)a1 predictionContext:(id)a2 histogramFeatureData:(id)a3 histogramSmoothingParameterK:(id)a4 histogramSmoothingParameterV:(id)a5; + (id)fetchBucketNamesFromPredictionContextForFeatureName:(int)a0 predictionContext:(id)a1; + (id)fetchIntervalStringForFeatureName:(int)a0; + (id)hasEverInBucketWithCandidates:(id)a0 featureName:(int)a1 predictionContext:(id)a2 histogramFeatureData:(id)a3; + (int)virtualFeatureToDurableFeatureSourceMapping:(int)a0; @end