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This paper presents a short-term prediction of fog occurrence based on suitable data mining methods. The whole process was implemented through CRISP-DM methodology that represents most commonly used approach for data mining. This methodology consists of six main phases, which we describe in this paper for our application: business understanding, data(More)
This paper describes a set of experiments with bagging – a method, which can improve results of classification algorithms. Our use of this method aims at classification algorithms generating decision trees. Results of performance tests focused on the use of the bagging method on binary decision trees are presented. The minimum number of decision trees,(More)
Formal concept analysis (FCA) is one of the approaches which can be applied in process of conceptual modeling in domain of text documents. FCA can be used for formal analysis of data tables and identification of similar objects - clusters (concepts). Extension of classic FCA (binary table data) is one-sided fuzzy version that works with real values in the(More)
The paper presents an example of e-government service integration on a semantic basis, as it was designed within the Access-eGov research project and applied in the Schleswig-Holstein state government. The case study follows up the application of a requirements-driven approach for designing e-government service interfaces with respect to the informational(More)
The paper focuses on the field of automatic extraction of information from texts and text document categorisation including pre-processing of text documents , which can be found on the Internet. In the frame of the presented work, we have devoted our attention to the following issues related to text categorisa-tion: increasing the precision of(More)
Currently, public administration services are being transformed into electronic. In such state, service consumers can solve their life event situations by going thru sequence of services where combination of traditional and electronic services is might occur. Service choreography is known as observable behaviour of one service from client's point of view.(More)
Service-oriented computing (SOC), lately often in combination with business process modeling (BPM), is becoming reality in current enterprise systems. At the same time, process models do no longer only span different departments but more and more frequently multiple organizations. Current BPM approaches focus on syntactic specification of work flow(More)
The occurrence of various meteorological phenomena, such as fog or low cloud cover, has significant impact on many human activities as air or ship transport operations. The management of air traffic at the airports was the main reason to design effective mechanisms for timely prediction of these phenomena. In both these cases meteorologists already use some(More)