question: get expected score based on two players . if more than two players are competing , then opponentrating will be the average of all other opponent 's ratings . if there is two teams against each other , rating and opponentrating will be the average of those players . concode_field_sep String game concode_elem_sep int startIndex concode_elem_sep double WIN concode_elem_sep int _kvalue concode_elem_sep HashMap ratingSystems concode_elem_sep int endIndex concode_elem_sep int SUPPORTED_PLAYERS concode_elem_sep double LOSS concode_elem_sep double value concode_elem_sep double DRAW concode_field_sep double getValue concode_elem_sep double getKFactor concode_elem_sep int getStartIndex concode_elem_sep int getEndIndex concode_elem_sep String toString concode_elem_sep int getNewRating concode_elem_sep int getNewRating concode_elem_sep int calculateNewRating
target: double function ( int arg0 , int arg1 ) { return 1.0 / ( 1.0 + Math . pow ( 10.0 , ( ( double ) ( arg1 - arg0 ) / 400.0 ) ) ) ; }