This paper has two aims. First, it describes CPB's contribution on bilateral services trade data to version 7 of the GTAP database. Among others, it uses reliability indices to determine the quality of the data reported by exporting and importing countries. Second, this paper discusses briefly...

This memorandum presents some basic equalities and inequalities about rates of return in discrete time, without auto-correlation. The arithmetic and geometric means are discussed. Estimation of the expected payout and the median payout is discussed, including maximum likelihood estimation.

This paper presents some suggestions for the specification of dynamic models. These suggestions are based on the supposed continuous-time nature of most economic processes. In particular, the partial adjustment model -or Koyck lag model- is discussed. The refinement of this model is derived...