نتایج جستجو برای: feature subset selection
تعداد نتایج: 614385 فیلتر نتایج به سال:
High dimensional data analytics is emerging research field in this digital world. The gene expression microarray data, remote sensor medical image, video are some of the examples high data. Feature subset selection challenging task for such To achieve diversity and accuracy with important aspect research. reduce time complexity parallel stepwise feature approach adopted paper. Our aim to enhanc...
Different approaches have been proposed for feature selection to obtain suitable features subset among all features. These methods search feature space for feature subsets which satisfies some criteria or optimizes several objective functions. The objective functions are divided into two main groups: filter and wrapper methods. In filter methods, features subsets are selected due to some measu...
land cover classification is one of the most important applications of polarimetric radar images, especially in urban areas. there are numerous features that can be extracted from these images for the use of their high potential, hence feature selection plays an important role in polsar image classification. in this study, three main steps are used to improve the classification: 1) feature extr...
The right and left hand Motor Imagery (MI) analysis based on the electroencephalogram (EEG) signal can directly link the central nervous system to a computer or a device. This study aims to identify a set of robust and nonlinear effective brain connectivity features quantified by transfer entropy (TE) to characterize the relationship between brain regions from EEG signals and create a hierarchi...
Biomedical datasets usually include a large number of features relative to the number of samples. However, some data dimensions may be less relevant or even irrelevant to the output class. Selection of an optimal subset of features is critical, not only to reduce the processing cost but also to improve the classification results. To this end, this paper presents a hybrid method of filter and wr...
The Ant Colony Optimization (ACO) is a metaheuristic inspired by the behavior of real ants in their search for the shortest paths to food sources. It has recently attracted a lot of attention and has been successfully applied to a number of different optimization problems. Due to the importance of the feature selection problem and the potential of ACO, this paper presents a novel method that ut...
In this paper an axiomatic characterisation of feature subset selection is presented. Two axioms are presented: suuciency axiom | preservation of learning information, and necessity axiom | minimising encoding length. The suuciency axiom concerns the existing dataset and is derived based on the following understanding: any selected feature subset should be able to describe the training dataset ...
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