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As we all know, it is an era of information explosion, in which we always get huge amounts of information. Therefore, it is in urgent need of picking out the useful and interesting information quickly. In order to solve this serious problem, recommendation system arises at the historic moment. Among the existing recommendation algorithms, the item-based collaborative filtering recommendation algorithm...
Wireless channel in metal environment is widely used in industrial, scientific and real life application, such as workshop, automobile, satellite, airplane, computer chassis and so on. It is quite different from that in traditional environment because of its strong reflection and weak absorbing. In this paper, we present a measurement of UWB-based channel in a computer chassis by sweeping in the frequency...
In the data mining research, mining association rules is an important topic. Apriori algorithm submitted by Agrawal and R. Srikant in 1994 is the most effective algorithm. Aimed at two problems of discovering frequent itemsets in a large database and mining association rules from frequent itemsets, the author makes some research on mining frequent itemsets algorithm based on apriori algorithm and...
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