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Webpages can be faked easily nowadays and as there are many internet users, it is not hard to find some becoming victims of them. Simultaneously, it is not uncommon these days that more and more activities such as banking and shopping are being moved to the internet, which may lead to huge financial losses. In this paper, a developed Chrome plugin for data mining-based detection of phishing webpages...
Nowadays is probably every one of us registered at various social networks. These social networks are gathering information about us but only few of them provide a service for checking what data are being held about us. This paper describes creating semantic layer for such a tool; deals with Facebook Graph API, Semantic Web technology, OWL and describes the Facebook Ontology: a formal framework handling...
Examining data for similar items is one of the fundamental data-mining problems. Application of methods for similarity search could be useful for plagiarism or near-duplicate web page detection. The computerized methods developed during last years are mainly focused on English language. However, Slovak language has several specific attributes and using these methods may not be precise enough. Our...
In spite of almost a decade of various scientific studies and endeavors, the research of electromagnetic fields and influence thereof on living systems is still a hot topic today. No final conclusions have been drawn, although the classification of extremely low frequency magnetic fields and radiofrequency electromagnetic fields as class 2B carcinogens has certainly tipped the scales in this long...
This paper deals with the problem of mobile device time synchronization with millisecond accuracy. We created a solution that will allow synchronizing time on mobile phones depending on accelerometer sensor precision. Our solution is suitable for multiple mobile sensor measurement where the time accuracy of synchronization between mobile phones is needed. We tested the implemented solution on the...
The aim of this study is to improve a fuzzy rule based system that helps to manage heart failure patients in home telemonitoring. The system is intended to give notifications to a decision-making support system and medical experts when there is a possibility of death for a telemonitored patient. The improvement consists in inclusion of a formulated dissimilarity measure into the algorithm for creation...
It has been planned that the whole region of Slovak Republic's surface would be scanned, and there arose a need for storing the resulting data and making it publicly available. For this purpose, a scalable file-based database system for storing and accessing a large amount of geographic point cloud data was developed. The principle of the system was tested and proved to be sufficient in most situations,...
This paper deals with the problem of storing and distribution of geographic point cloud data. A scalable file based database system for storing and accessing a large amount of point cloud geographic data was developed. The principle of the system is briefly described and the results of experiments with different file formats and their impact on the overall performance of the system as well as to space...
In this paper we describe fast and easy graph visualization layout we developed. We called it radius degree layout (RDL). RDL can be used for static and also for dynamic (interactive) visualization. RDL is easy to implement in 2D and 3D visualization, it is CPU efficient, also for large graphs, and we can easily orientate in graph using it. In this paper we describe RDL philosophy, implementation,...
We introduce a new fully automated online media monitoring system MNSight. We explain how the system works, for who is designated, its architecture and scalability. We show that it is easily accessible media monitoring system for the companies and also for general public which monitors at this moment Slovak internet media and collects over 2000 articles per day. We show also that it is easy scalable...
Data warehouse fragmentation is one of the main problems in distributed data warehouse (DDW) design. The first step in DDW design, which in fact affects overall solution, is the definition of fragments. In this work we present our approach to improve fragment allocation by their ordering before allocation process.
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