ℓ1 polynomial trend filtering, which is a filtering method described as an ℓ1-norm penalized least-squares problem, is promising because it enables the estimation of a piecewise polynomial trend in a univariate economic time series without prespecifying the number and location of knots. This...

ℓ1 polynomial trend filtering, which is a filtering method described as an ℓ1-norm penalized least-squares problem, is promising because it enables the estimation of a piecewise polynomial trend in a univariate economic time series without prespecifying the number and location of knots. This...

The effectiveness of nontraditional monetary policy is controversial at least in Japan. Making use of data from the quantitative easing monetary policy period, this paper presents statistical evidence on the effectiveness of nontraditional monetary policy. We empirically demonstrate that...

Based on the investment theory of Abel and Eberly (1994), we develop an analytical model of adjustment costs, which produces a sigmoidal investment function. We also estimate the piecewise linear investment function, which includes as special cases linear models, models with one threshold, the...

Many macroeconomists and policymakers have debated the effectiveness of the quantitative monetary-easing policy (QMEP) that was introduced in Japan in 2001. This paper measures the effect of the QMEP on aggregate output and prices, and examines its transmission mechanism, based on the vector...

The literature maintains the statistical significance of cash flow in the investment equation. One criticism against the financing constraint interpretation of cash flow is that cash flow may be picking up information on the future profitability of a firm which Tobinfs Q fails to capture. We...

The Bank of Japan adopted the Quantitative Easing (QE) Policy from March 2001 to March 2006. This paper investigates whether or not this QE had an effect in stimulating real economy in Japan. The identification of policy effect in the above Japanese case enables us to evaluate indirectly the...