Derived from the renowned multi-volume 'International Encyclopaedia of Laws', this practical analysis of competition law and its interpretation in Japan covers every aspect of the subject - the various forms of restrictive agreements and abuse of dominance prohibited by law and the rules on...

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...

Breitung and Candelon (2006) in <italic>Journal of Econometrics</italic> proposed a simple statistical testing procedure for the noncausality hypothesis at a given frequency. In their paper, however, they reported some theoretical results indicating that their test severely suffers from quite low power when the...

This paper estimates Japan’s output gap using the recently developed ℓ <Subscript>1</Subscript> trend filter, which is an alternative to the popular Hodrick–Prescott (HP) filter. This new filter provides a piecewise linear trend line, which means it possibly provides better output gap estimates than the HP...</subscript>