Relevant Component Analysis has been introduced recently as a way to incorporate a priori information, such as class or preference information, that may exist for a given data set. The method uses this information to define a new Mahalanobis distance metric on the data space. The purpose of the present…

The well-known economic principle on profit states that the profit is maximum when the marginal revenue equals the marginal cost. We hereby present the case where the price and the cost are polynomials in the demand quantity units. The coefficients are trapezoidal fuzzy numbers, hence the price and the cost…

Among the elements that are used to make the economical-financial analysis of a firm, we can mention ratios, which offer a wide range of possibilities to determine the situation of the company in a particular moment, as well as its evolution in time, and its position com-pared with other firms.…

There are developed the approach and the model of identification and forecasting of financial indexes using methods of fuzzy logic theory taking into account a number of specific rules of price curve development from Elliott wave theory. The carried out analysis of forecasting results on real data con-firms the reliability…

Enforcing compliance with the National Minimum Wage (NMW) in the British economy requires the identification of those establishments that are likely to pay a substantial proportion of their employees less than the NMW. In this paper, a fuzzy decision support system is constructed to aid in the elucidation of such…