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- W100711108 abstract "In the field of machine learning and knowledge discovery in databases attributes or features have a central role, thus it is reasonable to also question their quality and importance for the given problem. Because this is in general a difficult problem, we focused in the thesis on the development of a new method for estimating attribute importance.The new method is based on sampling the attribute space, evaluating the performance of algorithms for machine learning and reasoning about the importance of individual attributes based on the obtained scores. More specifically, at first different combinations of attributes are chosen and smaller data sets that contain them are prepared on which a testing procedure with sampling obtains estimates on performance of an arbitrary chosen learning algorithm. Performance estimates obtained that way are statistically processed for each attribute according to their presence and with a given formula joined into final scores for individual attributes.In order to determine how well different variants of the new method work, an appropriate experimental methodology and many diverse data sets has been prepared. Some successful methods have also been further tested in more detail to reinforce the conclusion, that certain variants of the new method really are statistically significant better than conventional widely used methods for this problem, but unfortunately an improved version of the best one of them still seems to be better. The thesis concludes with a discussion of the results and various ideas for further work, improvements and applications of the method." @default.
- W100711108 created "2016-06-24" @default.
- W100711108 creator A5022662692 @default.
- W100711108 date "2011-03-17" @default.
- W100711108 modified "2023-09-27" @default.
- W100711108 title "Attribute scoring based on performance of an learning algorithm on samples of attribute space" @default.
- W100711108 hasPublicationYear "2011" @default.
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