Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Dynamics Computational Sentiment Analysis in Financial Markets

Version 1 : Received: 13 April 2024 / Approved: 15 April 2024 / Online: 15 April 2024 (17:56:30 CEST)

How to cite: Carter, J.; Nasir, W.; Lee, S.; Parker, E. Dynamics Computational Sentiment Analysis in Financial Markets. Preprints 2024, 2024040928. https://doi.org/10.20944/preprints202404.0928.v1 Carter, J.; Nasir, W.; Lee, S.; Parker, E. Dynamics Computational Sentiment Analysis in Financial Markets. Preprints 2024, 2024040928. https://doi.org/10.20944/preprints202404.0928.v1

Abstract

The flux of opinions in newsletters and social media platforms significantly influences market perceptions regarding corporate entities and their financial instruments. This paper introduces an advanced model, the Sentiment Dynamics Analyzer (SDA), which leverages a refined hierarchical architecture of Transformers to effectively discern the sentiment embedded within financial texts, ranging from news headlines to microblogs. We have enhanced a RoBERTa model with specialized sentiment lexicons and an augmented layer of Transformer models tailored for nuanced sentence-level sentiment detection, aiming to assign a sentiment score from -1 to +1. Our evaluations demonstrate that SDA not only surpasses the previous best methods but also exhibits superior performance over robust baseline models. This success underscores the utility of integrating tailored contextual analyses with sector-specific sentiment insights in improving predictive accuracy.

Keywords

Sentiment Analysis; Financial Markets; Machine Learning

Subject

Computer Science and Mathematics, Artificial Intelligence and Machine Learning

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