The efficient markets hypothesis provides a theoretical basis on which technical trading rules (TTRs) are rejected as a viable trading strategy. TTRs, providing a signal to the user when to buy or sell asset based on such price patterns, should not be useful for generating excess returns....

In this paper we extend the original heterogeneous agent model by introducing smart traders and changes in agents' sentiment. The idea of smart traders is based on the endeavor of market agents to estimate future price movements. By adding smart traders and changes in sentiment we try to improve...

A heterogeneous agents model with the worst out algorithm was considered for obtaining more realistic market conditions. The WOA replaces periodically the trading strategies that have the lowest performance level of all strategies presented on the market by the new ones. New strategies that...

The efficient market hypothesis (EMH) fails as a valid model of financial markets. The fractal market hypothesis (FMH) is a more general alternative way to the EMH. The FMH is formed on the following parameter space: agents' investment horizons. A financial market is more stable when a fractal...

This paper investigates dependence structures on selected world stock markets. Firstly, a non-parametric univariate measure of a persistence concerning capital markets efficiency is derived and computed. Secondly, we focus on computing of a non-parametric multivariate measure of the persistence...

The purpose of this paper is to investigate the time-series and distributional properties of Central European stock returns. We test the random walk hypothesis and then consider an alternative to random walk - the ARIMA model for stock prices. The behavior of volatility of returns over time is...

In this article we analyse a neoclassical model of inflation. Our aim is to reconstruct the neoclassical theory of inflation to obtain a model which generates non-periodical oscillations of price level. This model is considered to be a realistic approximation of actual price level evolution. We...