In the interactive algorithms for multicriteria optimization the decision maker (DM) may express his/her preferences among the separate Pareto optimal solutions with the help of the values of the scalarizing problem parameters. The DM must choose the final (most preferred) solution and be responsible for this selection. The interactive methods are the best developed and wide spread methods. Thi...

This report describes a variety of 3D interactive graphics techniques for visualizing programs. The third dimension provides an extra degree of freedom for conveying information, much as color adds to black-and-white images, animation adds to static images, and sound adds to silent animations. The examples in this report illustrate three fundamental uses of 3D: for providing additional informat...

In this article I present a conservative visibility determination algorithm, particularly suited for interactive walkthroughs in architectural scenes. This algorithm is able to determine which parts of the scene are visible during an interactive real-time walkthrough. The algorithm consists of an off-line part, which preprocesses the scene, and an on-line part, which determines the potentially ...

The paper presents adaptation and optimization of the interaction structure of interactive systems by application of the control theory principles based on a fuzzy neural network. The interactive system is presented as a control system consisting of two parts: 1) plant of control or controlled plant (model of the real-life process) and 2) neurofuzzy-based feedback control algorithm. The last on...

In volume rendering shadows provide an important visual cue, and enhance depth perception. However, shadowing has its own disadvantages. Shadows do not take into account the importance of features and could potentially result in too dark scenes. In this paper we propose an approach for inconsistent shadowing, which is designed to overcome these limitations. For the purpose of illustrative rende...

Popular web search engines tend to improve the relevance of their result pages, but the search is still keyword–oriented and far from ”understanding” the queries’ meaning. In the article we propose an interactive question-based search algorithm that might come up helpful for identifying users’ intents. We describe the algorithm implemented in a form of a questions game. The stress is put mainly...