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We briefly report the results from a study of the structure, the surface and the Coulomb energy of the core-crust transition layer of neutron stars with global charge neutrality. The results show that the surface tension is a power-law function of the baryon number density in the core region. We also present analyses of the influence of the gravitational field on the transition layer and the instability...
In order to fast generate candidate frequent itemsets, avoid redundant calculation and reduce the time of scanning database, this paper proposes an algorithm of mining frequent itemsets based on digit sequence, which is suitable for mining long frequent itemsets. The algorithm firstly turns all transactions into digital transactions by binary, and then computing digit sequence of every attribute item...
In order to avoid redundant calculation and reduce the time of scanning database, this paper proposes an algorithm of association rules mining based on digit sequence (DS). The algorithm firstly turns all transactions into digital transactions by binary, and then computing digit sequence of every attribute item. Finally, the algorithm uses forming digital pure subset of digital transaction to generate...
This paper proposes an efficient algorithm of double search mining association rules based on digital pure subset, which uses the method of forming digital pure subset of transaction to generate candidate itemsets, and uses digital character to reduce the number of scanned transactions when computing support of itemsets after these transactions are turned into digital transaction by binary. In addition,...
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