Neural networks - feed-forward neural networks and Elman's simplerecurrent neural networks - are compared with vector ARMA models- VAR and VARMA - in this paper. They are compared in anartificial stock market. One risk free and one risky asset aretraded in the market. There are only trend...

<p> <p><span style="font-size: 12.000000pt; font-family: 'CMR12';">The present special issue of the Bulletin of the Czech Econometric Society is devoted to approximation of stochastic programming problems with special regard to empirical estimates. The issue is being published at the occasion of an important jubilee of our dear colleague Vlasta Kankova who...</span></p></p>

An economic model of cycles focused on the foreign capital investment phenomenon will be briefly introduced. We consider a system of the first order non-linear differential equations where a feedbackfunction is controlled by a capital/output ratio parameter. The value of potential gross domestic...

Macroeconomic models usually represent an equilibrium unemployment rate by using a differential equation. The solution of the differential equation expresses the natural unemployment rate. The same result is possible to achieve by using an introduced Markov's model of unemployment. Markov's...

The Efficient Markets Hypothesis provides a theoretical basis for trading rules. Technical trading rules provide a signal of when to buy or sell an asset based on such price patterns to the user. Technical traders tend to put little faith in strict efficient markets. Fundamentalists rely on...

Ekonomická dynamika je systematické studium ekonomických změn. Analyzují se změny ve výrobě, ve spotřebě, v obchodu, v alokaci zdrojů, v chování cen a v bohatství společnosti. Její součástí jsou dynamická teorie trhů, zabývající se chováním nabídky a poptávky a...

In this contribution we illustrate some applications of the theory of dynamical systems with parameteric and interval uncertainties to the analysis of limiting behaviour and stability of some neokeynesian macroeconomic models considered in [6]. The analysis is based on linearization of the...

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In this contribution we illustrate some applications oť the theory oť linear systems with interval uncertainties to the stability and speed oť adjustment analysis oť some macroeconomic models. In particular, we ťocus our attention on the Keynes and neoclassical systems, as well as on the...

We have shown that in the period of 1995-1997 the weak form Efficient Market Hypothesis does not apply to the Prague Stock Exchange. This conclusion is supported especially by the magnitude of autocorrelation between subsequent returns. Due to this result, the confirmation and analysis of...