Krzysztof Wecel

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IntroductIon Enhanced knowledge warehouse (eKW) is an extension of the enhanced data warehouse (eDW) system (Abramowicz, 2002). eKW is a Web services-based system that allows the automatic filtering of information from the Web to the data warehouse and automatic retrieval through the data warehouse. Web services technology extends eKW beyond the(More)
The estimation of prices on the art market has been investigated as a research topic for many years, but only recently new approaches to this problem have been applied. One of these approaches concerns extending data on a work of art with data from the Internet to improve the quality of assessment. This, however, creates a lot of challenges mostly regarding(More)