Dual of one direction S-rough sets-based knowledge addition and knowledge battlement recognition

By employing dual of one direction S-rough sets(dual of singular rough sets),the concepts of knowledge addition and knowledge battlement generated by knowledge addition are presented,where knowledge battlement has dynamic character-istic;then rough knowledge battlement generation is given,the generation principle and the reversion theorem of rough knowl-edge battlement are proposed.Furthermore the discernibility metric of rough knowledge battlement is presented,the recogni-tion rule and the recognition theorem of rough knowledge battlement are proposed.Finally the applications are given.