articles

This article contains a short survey for problems encountered in practical face recognition systems and foreign solutions for decision this problem. There are come to conclusions about the inapplicability their solutions for decision this problem with one sample per person. The recognition model is briefly describes, which have good results for face recognition for One Sample per Person problem. A mathematical model based on subspaces of the attributes is proposed to solve the stability problem of recognition coupled with various distortions of recognizable images that arise in real systems. The work of the proposed model is checked and recognition errors are analyzed.

This article discusses a new hybrid crowd behavior model, based on an approach of using multiple scalar fields and statistical data of real crowds to match model behavior with the behavior of real crowds. This word extends a Continuum crowd model with the ability to bypass local minimums. This model also supports heterogenous crowds. Accuracy of the model was tested on a set of statistical data collected from real crowds in a different situations. As a result, suggested hybrid crowd behavior model has smaller modeling error than continuum crowd and Reynolds models.

The model of structured expert discussion and graph presentation for using expert knowledge and its possible transformations are described. A set of algorithms for changing experts’ opinions in the frame of structured expert discussion, is proposed in the article.

A method of the cyclic decomposition with runs test for searching latent periodicity in the financial time series has been developed. The method together with the method of information decomposition was applied to search periodicity in exchange rates, rates of major financial indices and stock prices. The presence of frequency equal to 7 days in financial ranks analyzed was demonstrated. The sources of periodicity in the financial ranks are discussed.

A lot of standards for description and execution of business processes developed in the XXI-th century by non-profit professional associations and software manufacturers. Brief description of the standards complimented by their evolution analysis is suggested. The characteristics and relationship of BPEL, XPDL and BPMN considered the most common notations are described.