%0 Journal Article %T International Stock Market Efficiency: A Non-Bayesian Time-Varying Model Approach %A Mikio Ito %A Akihiko Noda %A Tatsuma Wada %J Quantitative Finance %D 2012 %I arXiv %R 10.1080/00036846.2014.909579 %X This paper develops a non-Bayesian methodology to analyze the time-varying structure of international linkages and market efficiency in G7 countries. We consider a non-Bayesian time-varying vector autoregressive (TV-VAR) model, and apply it to estimate the joint degree of market efficiency in the sense of Fama (1970, 1991). Our empirical results provide a new perspective that the international linkages and market efficiency change over time and that their behaviors correspond well to historical events of the international financial system. %U http://arxiv.org/abs/1203.5176v14