SubmissionNumber#=%=#23 FinalPaperTitle#=%=#MasonPerplexity at ClimateActivism 2024: Integrating Advanced Ensemble Techniques and Data Augmentation for Climate Activism Stance and Hate Event Identification ShortPaperTitle#=%=# NumberOfPages#=%=# CopyrightSigned#=%=# JobTitle#==# Organization#==# Abstract#==#The task of identifying public opinions on social media, particularly regarding climate activism and the detection of hate events, has emerged as a critical area of research in our rapidly changing world. With a growing number of people voicing either to support or oppose to climate-related issues - understanding these diverse viewpoints has become increasingly vital. Our team, MasonPerplexity, participates in a significant research initiative focused on this subject. We extensively test various models and methods, discovering that our most effective results are achieved through ensemble modeling, enhanced by data augmentation techniques like back-translation. In the specific components of this research task, our team achieved notable positions, ranking 5th, 1st, and 6th in the respective sub-tasks, thereby illustrating the effectiveness of our approach in this important field of study. Author{1}{Firstname}#=%=#Al Nahian Author{1}{Lastname}#=%=#Bin Emran Author{1}{Username}#=%=#alnahian Author{1}{Email}#=%=#abinemra@gmu.edu Author{1}{Affiliation}#=%=#George Mason University Author{2}{Firstname}#=%=#Amrita Author{2}{Lastname}#=%=#Ganguly Author{2}{Username}#=%=#amritaganguly Author{2}{Email}#=%=#agangul@gmu.edu Author{2}{Affiliation}#=%=#George Mason University Author{3}{Firstname}#=%=#Sadiya Sayara Chowdhury Author{3}{Lastname}#=%=#Puspo Author{3}{Username}#=%=#sadiyapuspo Author{3}{Email}#=%=#spuspo@gmu.edu Author{3}{Affiliation}#=%=#George Mason University Author{4}{Firstname}#=%=#Dhiman Author{4}{Lastname}#=%=#Goswami Author{4}{Username}#=%=#dhimangoswami Author{4}{Email}#=%=#dgoswam@gmu.edu Author{4}{Affiliation}#=%=#George Mason University Author{5}{Firstname}#=%=#Md Nishat Author{5}{Lastname}#=%=#Raihan Author{5}{Username}#=%=#md.nishat Author{5}{Email}#=%=#mraihan2@gmu.edu Author{5}{Affiliation}#=%=#George Mason University ========== èéáğö