SubmissionNumber#=%=#206 FinalPaperTitle#=%=#MasonTigers at SemEval-2024 Task 8: Performance Analysis of Transformer-based Models on Machine-Generated Text Detection ShortPaperTitle#=%=# NumberOfPages#=%=#9 CopyrightSigned#=%=#Sadiya Sayara Chowdhury Puspo JobTitle#==# Organization#==# Abstract#==#This paper presents the MasonTigers entry to the SemEval-2024 Task 8 - Multigenerator, Multidomain, and Multilingual BlackBox Machine-Generated Text Detection. The task encompasses Binary Human-Written vs. Machine-Generated Text Classification (Track A), Multi-Way Machine-Generated Text Classification (Track B), and Human-Machine Mixed Text Detection (Track C). Our best performing approaches utilize mainly the ensemble of discriminator transformer models along with sentence transformer and statistical machine learning approaches in specific cases. Moreover, Zero shot prompting and fine-tuning of FLAN-T5 are used for Track A and B. Author{1}{Firstname}#=%=#Sadiya Sayara Chowdhury Author{1}{Lastname}#=%=#Puspo Author{1}{Username}#=%=#sadiyapuspo Author{1}{Email}#=%=#spuspo@gmu.edu Author{1}{Affiliation}#=%=#George Mason University Author{2}{Firstname}#=%=#Nishat Author{2}{Lastname}#=%=#Raihan Author{2}{Username}#=%=#md.nishat Author{2}{Email}#=%=#mraihan2@gmu.edu Author{2}{Affiliation}#=%=#George Mason University Author{3}{Firstname}#=%=#Dhiman Author{3}{Lastname}#=%=#Goswami Author{3}{Username}#=%=#dhimangoswami Author{3}{Email}#=%=#dgoswam@gmu.edu Author{3}{Affiliation}#=%=#George Mason University Author{4}{Firstname}#=%=#Al Nahian Author{4}{Lastname}#=%=#Bin Emran Author{4}{Username}#=%=#alnahian Author{4}{Email}#=%=#abinemra@gmu.edu Author{4}{Affiliation}#=%=#George Mason University Author{5}{Firstname}#=%=#Amrita Author{5}{Lastname}#=%=#Ganguly Author{5}{Username}#=%=#amritaganguly Author{5}{Email}#=%=#agangul@gmu.edu Author{5}{Affiliation}#=%=#George Mason University Author{6}{Firstname}#=%=#Özlem Author{6}{Lastname}#=%=#Uzuner Author{6}{Username}#=%=#ouzuner Author{6}{Email}#=%=#ouzuner@gmu.edu Author{6}{Affiliation}#=%=#George Mason University ========== èéáğö