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Unveiling the sentiment behind central bank narratives: A novel deep learning index

Mihai Niţoi, Maria-Miruna Pochea and Ştefan-Constantin Radu

Journal of Behavioral and Experimental Finance, 2023, vol. 38, issue C

Abstract: This paper proposes a new framework for analyzing the sentiments of central bank narratives. Specifically, we fine-tune a pre-trained BERT model on a dataset of manually annotated sentences on monetary policy stance. We derive a deep learning domain-specific model—BERT central bank sentiment index—ready for sentiment predictions. The proposed index performs similarly to other measures in capturing financial uncertainty. Also, the sentiment index is less noisy and has the ability to forecast the future path of policy stance, augmenting the standard Taylor rule. Finally, compared to other lexicon-based sentiment indicators, our deep learning index has a higher predictive power in anticipating policy rates changes. Our framework enables future possible research in developing more accurate sentiment indicators for central banks in both advanced and emerging countries.

Keywords: Sentiment analysis; Natural language processing; BERT; Central bank communication; Forward guidance (search for similar items in EconPapers)
JEL-codes: E58 G40 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:beexfi:v:38:y:2023:i:c:s2214635023000230

DOI: 10.1016/j.jbef.2023.100809

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