The Inverse Frobenius-Perron problem (IFPP) concerns the creation of discrete chaotic mappings with arbitrary invariant densities. In this note, we present a new and elegant solution to the IFPP, based on positive matrix theory. Our method allows chaotic maps with arbitrary piecewise-constant invariant densities, and with arbitrary mixing properties, to be synthesized.

We introduce a novel approach for separating and segmenting individual facades from streetside images. Our algorithm incorporates prior knowledge about arbitrarily shaped repetitive regions which are detected using intensity profile descriptors and a voting–based matcher. In the experiments we compare our approach to extended state–of–the–art matching approaches using more than 600 challenging ...

Designing hypermedia systems might be a complex task as soon as the number of chunks of information to organize is large. In the task of designing hypermedia systems, interactive dynamic maps can provide designers with a better understanding of the semantics of the underlying set of documents, thus providing assistance in the design process. In this paper we present topic maps and techniques fo...

In this paper we propose an ontological framework for tools facilitating creative writing and story reading. It is based on an ontology implemented as a topic map and employs linguistic analysis methods for discovering conceptual entities in the text.

In this paper we present different results and studies around the world about the Fuzzy Cognitive Maps. This technique is the fusion of the advances of the fuzzy logic and cognitive maps theories. At this moment, there are several applications in different domains (control, multiagent systems, etc.) and new works (dynamical characteristics, learning procedures, etc.) to improve the performance ...

Spatial scientometrics has attracted a lot of attention in the very recent past. The visualization methods (density maps) presented in this paper allow for an analysis revealing regions of excellence around the world using computer programs that are freely available. Based on Scopus and Web of Science data, field-specific and field-overlapping scientific excellence can be identified in broader ...

Until recently, Chinese texts could not be studied using co-word analysis because the words are not separated by spaces in Chinese (and Japanese). A word can be composed of one or more characters. The online availability of programs that separate Chinese texts makes it possible to analyze them using semantic maps. Chinese characters contain not only information, but also meaning. This may enhan...

Leveraging their eBird crowdsourcing project, the Cornell Lab of Ornithology generates sophisticated Spatio-Temporal Exploratory Model (STEM) maps of bird migrations. Such maps are highly relevant for both scientific and educational purposes, but creating them requires advanced modeling techniques that rely on long and potentially expensive computations. In this paper, we share our experience p...

This article is devoted to the creation of complex electronic maps agriculture and agro-geo databases on basis geoformation systems (GIS) technologies. Scientific practical research mapping agricultural sector conducted by scientists from foreign countries, Commonwealth Independent States Uzbekistan. Analyzing classification maps, for Republic Uzbekistan proposed. Content elements covering sect...

Three-dimensional Electron Microscopy (3DEM) has become a key experimental method in structural biology for a broad spectrum of biological specimens from molecules to cells. The EMDataBank project provides a unified portal for deposition, retrieval and analysis of 3DEM density maps, atomic models and associated metadata (emdatabank.org). We provide here an overview of the rapidly growing 3DEM s...