* This constants represents comparing all combination between <it>X</it>.\r
* <it>x1 - x1, x1 - x2, x1 - x3, ..., xn - xn-1 xn, xn</it>.\r
*/\r
- ROUND_ROBIN,\r
+ ROUND_ROBIN_SAME_PAIR,\r
+ /**\r
+ * This constants represents comparing all combination between <it>X</it>.\r
+ * <it>x1 - x1, x1 - x2, x1 - x3, ..., xn - xn-1 xn, xn</it>.\r
+ */\r
+ ROUND_ROBIN_WITHOUT_SAME_PAIR,\r
/**\r
* This constants represents comparing some pairs. The pair is guessed by\r
* its name. If x1 and y3 have same name, then the pair of x1 and y3 is\r