A Text Mining Analysis of Central Bank Monetary Policy Communication in Nigeria

Authors

Mohammed M, Tumala, Central Bank of Nigeria, Abuja, Nigeria.Follow
Babatunde S. Omotosho, Central Bank of NigeriaFollow

Keywords

Central bank communication, Text mining, Monetary policy

Abstract

This paper employs text-mining techniques to analyse the communication strategy of the Central Bank of Nigeria (CBN) during the period 20042019. Since the policy communique released after each meeting of the CBN’s monetary policy committee (MPC) represents an important tool of central bank communication, we construct a corpus based on 87 policy communiques with a total of 123, 353 words. Having processed the textual data into a form suitable for analysis, we examined the readability, sentiments, and topics of the policy documents. While the CBN’s communication has increased substantially over the years, implying increased monetary policy transparency; the computed Coleman and Liau readability index shows that the word and sentence structures of the policy communiques have become more complex, thus reducing its readability. In terms of monetary policy sentiments, we find an average net score of 10.5 per cent, reflecting the level of policy uncertainties faced by the MPC over the sample period. In addition, our results indicate that the topics driving the linguistic contents of the communiques were influenced by the Bank’s policy objectives as well as the nature of shocks hitting the economy per period.

Author Bio

The authors are staff of Statistics Department, Central Bank of Nigeria, Abuja.

Publication Title

CBN Journal of Applied Statistics

Issue

2

Volume

10

Recommended Citation

Tumala, Mohammed M, and Omotosho, Babatunde S. (2019) "A Text Mining Analysis of Central Bank Monetary Policy Communication in Nigeria," CBN Journal of Applied Statistics (JAS): Vol. 10: No. 2, Article 3.
Available at: https://dc.cbn.gov.ng/jas/vol10/iss2/3