Response of double-auction markets to instantaneous Selling�CBuying signals with stochastic Bid�CAsk spread

Statistical properties of order-driven double-auction markets with Bid–Ask spread are investigated through the dynamical quantities such as response function. We first attempt to utilize the so-called Madhavan–Richardson–Roomans model (MRR for short) to simulate the stochastic process of the price-change in empirical data sets (say, EUR/JPY or USD/JPY exchange rates) in which the Bid–Ask spread fluctuates in time. We find that the MRR theory apparently fails to simulate so much as the qualitative behaviour (‘non-monotonic’ behaviour) of the response function R(l) (l denotes the difference of times at which the response function is evaluated) calculated from the data. Especially, we confirm that the stochastic nature of the Bid–Ask spread causes apparent deviations from a linear relationship between the R(l) and the auto-correlation function C(l), namely, R(l) μ -C(l){R(l) \propto -C(l)}. To make the microscopic model of double-auction markets having stochastic Bid–Ask spread, we use the minority game with a finite market history length and find numerically that appropriate extension of the game shows quite similar behaviour of the response function to the empirical evidence. We also reveal that the minority game modeling with the adaptive (‘annealed’) look-up table reproduces the non-linear relationship R(l) μ -f(C(l)){R(l) \propto -f(C(l))} (f(x) stands for a non-linear function leading to ‘λ-shapes’) more effectively than the fixed (‘quenched’) look-up table does.     

Is Abe's Fiscal Policy Ricardian? What Does the Fiscal Theory of Prices Mean for Japan?

The second arrow of Abenomics is flexible fiscal policy. However, it does not mean just fiscal stimulus as the Abe administration decided on the fiscal consolidation target of achieving a primary surplus by fiscal year 2020. Improving the primary balance implies making government debt more sustainable. Although the consumption tax rate was raised from 5% to 8% in April 2014, the Abe administration has decided twice to postpone increasing the consumption tax from 8% to 10%. In addition, a fiscal stimulus package was implemented. We use a Fiscal Stance Index to examine fiscal policy from the viewpoint of fiscal sustainability and a Markov switching model to examine fiscal policy from the viewpoint of the fiscal theory of the price level, and find that the Abe's fiscal stance is not Ricardian.     

Empirics of the median voter hypothesis in Japan

This paper empirically analyses for the first time the median voter hypothesis in Japan as a means of investigating whether or not Japanese prefectural finance reflects the preference of the median voter. The hypothesis is tested by estimating the demand functions of local public goods in each prefecture. As official data on the income of the median voter is unavailable in Japan, respective prefectural data is constructed using official data on income distribution and taxation. Reasonable intuitive interpretation of results indicates that the median voter hypothesis is supported in prefectural finances, and that voter preference affects the outcome of gubernatorial elections, i.e., a governor's reelection probability, by estimating a probit model. When considering the centralized prefectural government system in Japan, these results indicate that central government management of prefectural expenditures via inter-regional grants ultimately reflects jurisdictional median voter preference. First version received: December 1997/Final version received: February 1999     

Fiscal Reconstruction and Local Interest Groups in Japan

This paper investigates the politicoeconomic properties of the fiscal reconstruction process in Japan by analyzing the dynamic game among local interest groups with concessions of region-specific privileges. Free-riding behavior of local interest groups brings numerous deficits. Our empirical evidence indicates that local privileges were powerful in the 1990s, which is the main reason fiscal reconstruction did not perform very well in the 1990s. J. Japan. Int. Econ., December 2002, 16(4), pp. 492–511. Faculty of Economics, Keio University, and Graduate School of International Relations and Pacific Studies, University of California, San Diego; and Department of Economics, University of Tokyo, Hongo, Tokyo 113-0033, Japan, and Economic and Social Research Institute, Cabinet Office of Japan, 3-1-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8970, Japan. © 2002 Elsevier Science (USA).Journal of Economic Literature Classification Numbers: H41, F13, D62.     

Japanese government debt and sustainability of fiscal policy

We construct quarterly series of the revenues, expenditures, and debt outstanding for Japan from 1980 to 2010, and analyze the sustainability of the fiscal policy. We pursue three approaches to examine the sustainability. First, we calculate the minimum tax rate that stabilizes the debt to GDP ratio given the future government expenditures. Using 2010 as the base year, we find that the government revenue to GDP ratio must rise permanently to 40–47% (from the current 33%) to stabilize the debt to GDP ratio. Second, we estimate the response of the primary surplus when the debt to GDP ratio increases. We allow the relationship to fluctuate between two “regimes” using a Markov switching model. In both regimes, the primary surplus to GDP ratio fails to respond positively to debt, which suggests the process is explosive. Finally, we estimate a fiscal policy function and a monetary policy function with Markov switching. We find that the fiscal policy is “active” (the tax revenues do not rise when the debt increases) and the monetary policy is “passive” (the interest rate does not react to the inflation rate sufficiently) in both regimes. These results suggest that the current fiscal situation for the Japanese government is not sustainable.     

Japanese fiscal reform: fiscal reconstruction and fiscal policy

This paper evaluates the recent movement of Japanese fiscal reform. We first summarize fiscal policy in 1990s. Then, we investigate several relevant topics of fiscal policy such as the macroeconomic impact of government debt and the sustainability problem. We then consider dynamic properties of fiscal reconstruction process by analyzing the dynamic game among various interest groups. This paper points out that the long-run structural reform is more important than the short-run Keynesian policy in Japan.