SubmissionNumber#=%=#138 FinalPaperTitle#=%=#Fine-tuning Language Models for AI vs Human Generated Text detection ShortPaperTitle#=%=# NumberOfPages#=%=#4 CopyrightSigned#=%=#Sankalp Bahad JobTitle#==# Organization#==# Abstract#==#In this paper, we introduce a machine- generated text detection system designed to tackle the challenges posed by the prolifera- tion of large language models (LLMs). With the rise of LLMs such as ChatGPT and GPT-4, there is a growing concern regarding the po- tential misuse of machine-generated content, including misinformation dissemination. Our system addresses this issue by automating the identification of machine-generated text across multiple subtasks: binary human-written vs. machine-generated text classification, multi- way machine-generated text classification, and human-machine mixed text detection. We em- ploy the RoBERTa Base model and fine-tune it on a diverse dataset encompassing various domains, languages, and sources. Through rigorous evaluation, we demonstrate the effec- tiveness of our system in accurately detecting machine-generated text, contributing to efforts aimed at mitigating its potential misuse. Author{1}{Firstname}#=%=#Sankalp Sanjay Author{1}{Lastname}#=%=#Bahad Author{1}{Username}#=%=#sankalp_bahad Author{1}{Email}#=%=#sankalp.bahad@research.iiit.ac.in Author{1}{Affiliation}#=%=#IIIT Hyderabad Author{2}{Firstname}#=%=#Yash Author{2}{Lastname}#=%=#Bhaskar Author{2}{Email}#=%=#yash.bhaskar@research.iiit.ac.in Author{2}{Affiliation}#=%=#IIIT Hyderabad Author{3}{Firstname}#=%=#Parameswari Author{3}{Lastname}#=%=#Krishnamurthy Author{3}{Username}#=%=#parameswari Author{3}{Email}#=%=#parameshkrishnaa@gmail.com Author{3}{Affiliation}#=%=#Assistant Professor, IIIT Hyderabad ========== èéáğö