boolean function ( ) { return getFrequency ( ) < 0.5 ; }
check if the truth value is negative concode_field_sep char DELIMITER concode_elem_sep ShortFloat confidence concode_elem_sep char SEPARATOR concode_elem_sep ShortFloat frequency concode_field_sep String toStringBrief concode_elem_sep float getFrequency concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep Object clone concode_elem_sep String toString concode_elem_sep float getExpectation concode_elem_sep float getExpDifAbs concode_elem_sep float getConfidence