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Volume 2017 (2017), Article ID 4152705, 10 pages
Research Article

Predicting the Currency Market in Online Gaming via Lexicon-Based Analysis on Its Online Forum

1Interdisciplinary Program in Visual Information Processing, Korea University, Seoul, Republic of Korea
2Department of Computer Science and Engineering, Korea University, Seoul, Republic of Korea
3School of Games, Hongik University, Sejong, Republic of Korea
4Department of Software Application, Kangnam University, Yongin, Republic of Korea

Correspondence should be addressed to Chang Hun Kim

Received 6 May 2017; Revised 15 September 2017; Accepted 19 October 2017; Published 24 December 2017

Academic Editor: Katarzyna Musial

Copyright © 2017 Young Bin Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Transactions involving virtual currencies are becoming increasingly common, including those in online games. In response, predicting the market price of a virtual currency is an important task for all involved, but it has not yet attracted much attention from researchers. This paper presents user opinions from online forums in a massive multiplayer online game (MMOG) setting widely used around the world. We propose a method for predicting the next-day rise and fall of the currency used in an MMOG environment. Based on analysis of online forum users’ opinions, we predict daily fluctuations in the price of a currency used in an MMOG setting. Focusing specifically on the World of Warcraft game, one of the most widely used MMOGs, we demonstrate the feasibility of predicting the fluctuation in value of virtual currencies used in this game community.