question: returns the strength of relationship for this friend . the weight is normalized and smaller than 1 in most cases . concode_field_sep int calls concode_elem_sep float NORMALIZATION concode_elem_sep float minutes concode_elem_sep String deviceId concode_elem_sep float CALLS_COEFFICIENT concode_elem_sep Key key concode_elem_sep float MINUTES_COEFFICIENT concode_field_sep String getDeviceId concode_elem_sep Key getKey concode_elem_sep int getCalls concode_elem_sep void addMinutes concode_elem_sep void setMinutes concode_elem_sep String toString concode_elem_sep void setDeviceId concode_elem_sep void setKey concode_elem_sep float getMinutes concode_elem_sep void setCalls
target: float function ( ) { return ( MINUTES_COEFFICIENT * minutes + CALLS_COEFFICIENT * calls ) / NORMALIZATION ; }