Park, SunSunParkLee, Ju-HongJu-HongLeeKim, Deok-HwanDeok-HwanKimAhn, Chan-MinChan-MinAhnJU-HONG LEE2020-06-112020-06-112007https://scholars.lib.ntu.edu.tw/handle/123456789/498407Multi-document Summarization Based on Cluster Using Non-negative Matrix Factorization.conference paper10.1007/978-3-540-69507-3_66https://doi.org/10.1007/978-3-540-69507-3_66