Lee Y.-HCHIH-PING WEIHu P.J.-H.2020-02-102020-02-102007https://www.scopus.com/inward/record.uri?eid=2-s2.0-80053479533&partnerID=40&md5=58d83ed30e59d90e356d9784931791b5https://scholars.lib.ntu.edu.tw/handle/123456789/456504Preserving user preferences in document-category management: An ontology-based evolution approachconference paper2-s2.0-80053479533