SubmissionNumber#=%=#29 FinalPaperTitle#=%=#IUST at ClimateActivism 2024: Towards Optimal Stance Detection: A Systematic Study of Architectural Choices and Data Cleaning Techniques ShortPaperTitle#=%=# NumberOfPages#=%=# CopyrightSigned#=%=# JobTitle#==# Organization#==# Abstract#==#This work presents a systematic search of various model architecture configurations and data cleaning methods. The study evaluates the impact of data cleaning methods on the obtained results. Additionally, we demonstrate that a combination of CNN and Encoder-only models such as BERTweet outperforms FNNs. Moreover, by utilizing data augmentation, we are able to overcome the challenge of data imbalance. Author{1}{Firstname}#=%=#Ghazaleh Author{1}{Lastname}#=%=#Mahmoudi Author{1}{Username}#=%=#ghazale_mahmoodi Author{1}{Email}#=%=#gh_mahmoodi@comp.iust.ac.ir Author{1}{Affiliation}#=%=#Iran University of Science and Technology Author{2}{Firstname}#=%=#Sauleh Author{2}{Lastname}#=%=#Eetemadi Author{2}{Username}#=%=#sauleh Author{2}{Email}#=%=#sauleh@iust.ac.ir Author{2}{Affiliation}#=%=#Iran University of Science and Technology ========== èéáğö