An Interactive Management of Time Series user can create new functions which cannot be reconstructed by means of existing functions, and use them as operators of the language.

A well known macroeconometric model of the Italian economy is updated to produce forecasts at 1974.

A method for evaluating the reliability of policy recommendations derived from a linear dynamic structural econometric model in the framework of the linear quadratic control problem has been recently proposed by Friedmann (1980, 1981). The method analytically derives the asymptotic distribution...

The evaluation of policy actions by means of macroeconomic models often begins with the analysis of multipliers. A rough analysis recommends to use those instruments that exhibit large multipliers. Government budget usually imposes some constraints on the policy action. Insted of the raw...

DMS/2 (Decisional Models Solution, version 2) is a computer package for solution of nonlinear econometric models. This technical report describes the new features that improve over the DMS-package.

The autoregressive conditional heteroskedasticity (ARCH) estimation procedure provides a specification of the error terms as well as estimates of the coefficients. A simple interest rate equation is estimated using least squares and also using ARCH. Then the stochastic simulation methodology is...

This paper describes the application of a reordering algorithm to the equations of econometric models. The algorithm was proposed in 1970 by Van der Giessen and is here applied to the equation format required by the program for stochastic simulation developed at the IBM Scientific Center in Pisa.

This report describes the content and the format of five magnetic tapes in which the large volume of data on foreign trade by commodities distributed by O.E.C.D. has been condensed at the IBM Scientific Center of Pisa.

This paper shows how to compute asymptotic standard errors of the characteristic roots of a nonlinear econometric model. The system of simultaneous equations is linearized in the neighborhood of a given point, then characteristic roots and related standard errors are computed.

This article describes the application to an operational medium-size econometric model, mini-DMS, of methods associating, to deterministic forecasts, a measure of the uncertainty due to the stochastic nature of behavioural equations. After having described the theoretical and practical...