The integrity of the market and investor con- fidence are seriously threatened by the prolif- eration of financial misinformation via digital media. Existing approaches such as fact check, lineage detection and others have demonstrated significant progress in detecting financial mis- information. In this paper, we present a novel two-stage framework leveraging large language models (LLMs) to identify and explain finan- cial misinformation. The framework first em- ploys a GPT-4 model fine-tuned on financial datasets to classify claims as “True,” “False,” or “Not Enough Information” by analyzing rel- evant financial context. To enhance classifi- cation reliability, a second LLM serves as a verification layer, examining and refining the initial model’s predictions. This dual-model approach ensures greater accuracy in misinfor- mation detection through cross-validation. Beyond classification, our methodology empha- sizes generating clear, concise, and actionable explanations that enable users to understand the reasoning behind each determination. By com- bining robust misinformation detection with interpretability, our paradigm advances AI sys- tem transparency and accountability, providing valuable support to investors, regulators, and financial stakeholders in mitigating misinfor- mation risks.

Hallucinations in large language models(LLMs) have recently become a significantproblem. A recent effort in this directionis a shared task at Semeval 2024 Task 6,SHROOM, a Shared-task on Hallucinationsand Related Observable Overgeneration Mis-takes. This paper describes our winning so-lution ranked 1st and 2nd in the 2 sub-tasksof model agnostic and model aware tracks re-spectively. We propose a meta-regressor basedensemble of LLMs based on a random forestalgorithm that achieves the highest scores onthe leader board. We also experiment with var-ious transformer based models and black boxmethods like ChatGPT, Vectara, and others. Inaddition, we perform an error analysis com-paring ChatGPT against our best model whichshows the limitations of the former

Named Entity Recognition(NER) is a task ofrecognizing entities at a token level in a sen-tence. This paper focuses on solving NER tasksin a multilingual setting for complex named en-tities. Our team, LLM-RM participated in therecently organized SemEval 2023 task, Task 2:MultiCoNER II,Multilingual Complex NamedEntity Recognition. We approach the problemby leveraging cross-lingual representation pro-vided by fine-tuning XLM-Roberta base modelon datasets of all of the 12 languages provided - Bangla, Chinese, English, Farsi, French,German, Hindi, Italian, Portuguese, Spanish,Swedish and Ukrainian.