Improved Text Summarization of News Articles Using GA-HC and PSO-HC. - Mohsin, Muhammad; Latif, Shazad; Haneef, Muhammad; Tariq, Usman; Khan, Muhammad Attique; Kadry, Sefedine; Yong, Hwan-Seung; Choi, Jung-In (Applied Sciences (2076-3417), 2021)