A Qualitative Game of Interest Rate Adjustments with a Nuisance Agent

A qualitative game describes a situation in which antagonistic players strive to keep the evolutions of their state variables in predetermined constraint sets. We argue that a qualitative game model is a suitable mathematical representation of the struggle between a domestic central bank of a small...

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Main Authors: Jacek B. Krawczyk, Vladimir P. Petkov
Format: Article
Language:English
Published: MDPI AG 2022-08-01
Series:Games
Subjects:
Online Access:https://www.mdpi.com/2073-4336/13/5/58
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author Jacek B. Krawczyk
Vladimir P. Petkov
author_facet Jacek B. Krawczyk
Vladimir P. Petkov
author_sort Jacek B. Krawczyk
collection DOAJ
description A qualitative game describes a situation in which antagonistic players strive to keep the evolutions of their state variables in predetermined constraint sets. We argue that a qualitative game model is a suitable mathematical representation of the struggle between a domestic central bank of a small open economy and a foreign central bank of a large economy to maintain their respective state variables within an acceptable band regardless of the other player’s choices. The actions of the foreign central bank affect the domestic exchange rate and, hence, domestic inflation, output gap and interest rate. However, these actions do not necessarily aim to destabilise the small open economy, nor do they take into account the state of the latter. The domestic bank’s problem, therefore, is similar to that of a game against nature. We refer to this type of qualitative game as a <i>nuisance-agent game</i> (or <i>NA-game</i>). We use viability theory to derive satisficing rules (in the sense of Simon) of nominal interest-rate adjustments for the domestic central bank of a small open economy in a qualitative NA-game against the foreign central bank.
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spelling doaj.art-da99444441d94a1195eab4c5271b10c12023-12-03T14:44:46ZengMDPI AGGames2073-43362022-08-011355810.3390/g13050058A Qualitative Game of Interest Rate Adjustments with a Nuisance AgentJacek B. Krawczyk0Vladimir P. Petkov1School of Mathematics and Statistics, The University of Sydney, Sydney, NSW 2006, AustraliaSchool of Economics and Finance, Victoria University of Wellington, Wellington 6011, New ZealandA qualitative game describes a situation in which antagonistic players strive to keep the evolutions of their state variables in predetermined constraint sets. We argue that a qualitative game model is a suitable mathematical representation of the struggle between a domestic central bank of a small open economy and a foreign central bank of a large economy to maintain their respective state variables within an acceptable band regardless of the other player’s choices. The actions of the foreign central bank affect the domestic exchange rate and, hence, domestic inflation, output gap and interest rate. However, these actions do not necessarily aim to destabilise the small open economy, nor do they take into account the state of the latter. The domestic bank’s problem, therefore, is similar to that of a game against nature. We refer to this type of qualitative game as a <i>nuisance-agent game</i> (or <i>NA-game</i>). We use viability theory to derive satisficing rules (in the sense of Simon) of nominal interest-rate adjustments for the domestic central bank of a small open economy in a qualitative NA-game against the foreign central bank.https://www.mdpi.com/2073-4336/13/5/58qualitative gamemacroeconomic modellingdynamic systemsviability theoryVikaasa
spellingShingle Jacek B. Krawczyk
Vladimir P. Petkov
A Qualitative Game of Interest Rate Adjustments with a Nuisance Agent
Games
qualitative game
macroeconomic modelling
dynamic systems
viability theory
Vikaasa
title A Qualitative Game of Interest Rate Adjustments with a Nuisance Agent
title_full A Qualitative Game of Interest Rate Adjustments with a Nuisance Agent
title_fullStr A Qualitative Game of Interest Rate Adjustments with a Nuisance Agent
title_full_unstemmed A Qualitative Game of Interest Rate Adjustments with a Nuisance Agent
title_short A Qualitative Game of Interest Rate Adjustments with a Nuisance Agent
title_sort qualitative game of interest rate adjustments with a nuisance agent
topic qualitative game
macroeconomic modelling
dynamic systems
viability theory
Vikaasa
url https://www.mdpi.com/2073-4336/13/5/58
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