At present majority of research is on cluster analysis which is based on information retrieval from data that portrays the objects and their association among them. When there is a talk on good cluster formation, then selection of an optimal cluster core or center is the necessary criteria. This is because an inefficient center may result in unpredicted outcomes. Hence, a sincere attempt had been made to offer few suggestions for discovering the near optimal cluster centers. We have looked at few versatile approaches of data clustering like K-Means, TLBOC, FEKM, FECA and MCKM which differs in their initial center selection procedure. They have been implemented on diverse data sets and their inter and intra cluster formation efficiency were tested using different validity indices. The clustering accuracy was also conducted using Rand index criteria. All the algorithms computational complexity was analyzed and finally their computation time was also recorded. As expected, mostly FECA and to some extend FEKM and MCKM confers better clustering results as compared to K-Means and TLBOC as the former ones manages to obtain near optimal cluster centers. More specifically, the accuracy percentage of FECA is higher than the other techniques however, it‘s computational complexity and running time is moderately higher.

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Efficient Intelligent Framework for Selection of Initial Cluster Centers

Cluster analysis is an important issue for machine learning and pattern recognition, and clustering algorithms are used to solve these problems. Owing to the disadvantage of the traditional clustering algorithms that need iteration calculation and do not adapt to clustering random distribution data, an improved clustering algorithm named automatic clustering algorithm based on data contained ratio is developed. The concept of data contained ratio is proposed in the improved algorithm, the number of clusters is automatically determined based on data contained ratio, and the cluster centres are obtained accordingly. Several group test data testify and demonstrate the validity and effectiveness of the improved clustering algorithm. In addition, the comparison between the traditional K-means clustering algorithm and improved clustering algorithm is presented. Finally, the improved clustering algorithm is used to recognise the flight trace. The results demonstrate that the improved clustering algorithm can be used for pattern recognition; it has high adaptability and robustness in clustering random distribution data set.

An improved clustering algorithm and its application

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An improved clustering algorithm and its application