فهرس المقالات Vahideh Reshadat المقاله 1 - Confidence measure estimation for Open Information Extraction 10.7508/jist.2018.21.001 Vahideh Reshadat Maryam hourali Heshaam Faili Journal of Information Systems and Telecommunication (JIST) , العدد 1 , السنة 6 , زمستان 2018