%PDF-1.5 % 1 0 obj <>stream application/pdfIEEEIEEE Access;2018;6; ;10.1109/ACCESS.2018.2839607Educational knowledge graphinstructional concepteducational relationpedagogical datalearning assessmenteducational data miningKnowEdu: A System to Construct Knowledge Graph for EducationPenghe ChenYu LuVincent W. ZhengXiyang ChenBoda Yang IEEE Access31553 2018 6 10.1109/ACCESS.2018.283960731563 endstream endobj 2 0 obj <>stream Hֱ?!aEA?UTwY?I??aʁ