نتایج جستجو برای: pattern selection

تعداد نتایج: 652957  

2012
Haiyan Guan Jun Yu Jonathan Li Lun Luo

The development of lidar system, especially incorporated with high-resolution camera components, has shown great potential for urban classification. However, how to automatically select the best features for land-use classification is challenging. Random Forests, a newly developed machine learning algorithm, is receiving considerable attention in the field of image classification and pattern re...

2014
S. Sivakumar

Feature selection is the problem of selecting a subset of features without reducing the accuracy of representing the original set of features. It is the most important step that affects the performance of a pattern recognition system. In this paper, genetic algorithm (GA) is used to implement a feature selection in filter based method, and the mutual information is served as a fitness function ...

2013
Urszula LIBAL

́ Abstract. There is searched the balance between an increase of pattern recognition risk and a decrease of a model size. The experiments are performed for noisy signals, decomposed in wavelet bases. Wavelet representation of signals, i.e. representation by wavelet coefficients called signal features, constitutes the full model. The presented feature selection method is based on the Lasso algori...

2014
Sibylle Hess Nico Piatkowski Katharina Morik

The appliance of the minimum description length (MDL) principle to the field of theory mining enables a precise description of main characteristics of a dataset in comparison to the numerous and hardly understandable output of the popular frequent pattern mining algorithms. The loss function that determines the quality of a pattern selection with respect to the MDL principle is however difficul...

Journal: :Journal of the Japanese Society for Horticultural Science 2011

Journal: :زبان و ادبیات عربی 0

word formation and word selection in one hand’ are considered from higher processes a word aqualization which has a wide range application for language theorists and researchers in order to enrich language or in a better way in order to set free them from words. inadequacy challenge and also lach of the knowledge of the words in technology and industry fields aspecially in arabic and persian sp...

Journal: :Evolution; international journal of organic evolution 2012
I-Ping Chen Devi Stuart-Fox Andrew F Hugall Matthew R E Symonds

Many species have elaborate and complex coloration and patterning, which often differ between the sexes. Sexual selection may increase the size or intensity of color patches (elaboration) in one sex or drive the evolution of novel signal elements (innovation). The latter potentially increases color pattern complexity. Color pattern complexity may also be influenced by ecological factors related...

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