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Subarray partition is usually employed in the design of array antennas. However, it is difficult to get an exact partition of an arbitrary antenna aperture with irregular-shaped subarrays. Based on the exact cover theory, a solution of the exact partition is developed using the algorithm X. We consider the fact that sometimes it would be unpractical to exactly partition an aperture with given-shaped...
In this paper, an improved Differential Evolution algorithm (ACDE-O) with cluster number oscillation for automatic crisp clustering has been presented. The proposed algorithm needs no prior knowledge of the number of clusters of the data. Rather, it finds the optimal number of clusters on the processing with stable and fast convergence, cluster number oscillation mechanism will search more possible...
Fuzzy C-means algorithm (FCM) is the most widely used fuzzy partitioning method for data cluster. The K-means algorithm implements fast, however the result is less accurate clustering. In this paper describes a hybridized clustering approach for image segmentation using particle swarm optimization to improve the classical FCM algorithm. The experimental results show that the hybridized clustering...
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