Android a fast clustering-based feature subset selection algorithm for high-dimensional data

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A FAST CLUSTERING-BASED FEATURE SUBSET SELECTION ALGORITHM FOR
HIGH-DIMENSIONAL DATA
ABSTRACT:
Feature selection involves identifying a subset of the most useful features that produces
compatible results as the original entire set of features. A feature selection algorithm may be
evaluated from both the efficiency and effectiveness points of view. While the efficiency
concerns the time required to find a subset of features, the effectiveness is related to the quality
of the subset of features. Based on these criteria, a fast clustering-based feature selection
algorithm (FAST) is proposed and experimentally evaluated in this paper.
The FAST algorithm works in two steps.
In the first step, features are divided into clusters by using graph-theoretic clustering methods.
In the second step, the most representative feature that is strongly related to target classes is
selected from each cluster to form a subset of features.
Features in different clusters are relatively independent; the clustering-based strategy of FAST
has a high probability of producing a subset of useful and independent features. To ensure the
efficiency of FAST, we adopt the efficient minimum-spanning tree (MST) clustering method.
The efficiency and effectiveness of the FAST algorithm are evaluated through an empirical
study. Extensive experiments are carried out to compare FAST and several representative feature
selection algorithms results, on 35 publicly available real-world high-dimensional image,
microarray, and text data, demonstrate that the FAST not only produces smaller subsets of
features but also improves the performances of the four types of classifiers.
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The document describes a proposed fast clustering-based feature subset selection (FAST) algorithm for high-dimensional data. The FAST algorithm works in two steps: 1) clustering features using minimum spanning tree methods, and 2) selecting the most representative feature from each cluster. This identifies useful and independent features efficiently. Experimental results on 35 real-world datasets demonstrate that FAST produces smaller feature subsets and improves classifier performance compared to other feature selection algorithms.

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