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Based on the analysis of 3D maximum likelihood estimation positioning algorithm, RSSI ranging error directly affects the overall positioning accuracy of the algorithm, so weighted maximum likelihood estimation positioning algorithm is put forward. It is inversely proportional to the square of distance and positioning accuracy of the algorithm through theoretical derivation, thus diagonal weight matrix...
Bot nicknames within one IRC-based botnet must have uniform structure, because they are generated by the same bot fixedly. In this paper, the similarity of nicknames in the same channel is defined by the term dasiachannel distancepsila. And a novel algorithm based on channel distance is proposed to detect IRC-based botnets. The most significant contribution of this algorithm is that it can detect...
This paper analyses the advantages and disadvantages of the K-means algorithm and the DENCLUE algorithm. In order to realise the automation of clustering analysis and eliminate human factors, both partitioning and density-based methods were adopted, resulting in a new algorithm - Clustering Algorithm based on object Density and Direction (CADD). This paper discusses the theory and algorithm design...
In traditional FCM clustering algorithm each feature is supposed to have equal importance. Considering different feature with different importance, this paper presented an improved FCM algorithm with adaptive weight for features of each cluster, named AWFCM. In the iterative AWFCM process, to identify the importance of features of each cluster, the weight for feature is computed dynamically based...
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