Nowadays, with the development of science and technology and the improvement of people's living standard, Internet cloud computing develops the smart city. A smart city cloud was constructed. Based on the cloud computing, a novel information system was designed with Web. The traditional information system...

Relevance Model (RM) is one of typical and generally stable methods for the query expansion in information retrieval (IR). This paper presents a novel information retrieval model based on the quantum probability theory, and makes a preliminary exploration on the application of quantum model in pseudo-relevance...

This paper presents a spectrum optimization algorithm for community detection of the complex networks. An edge cutting model is proposed for selecting edges to be removed from candidates by minimizing algebraic connectivity function. In this model a greedy heuristic method is used to get the lower bound...

A brief review of the past researches on CF shows that methods for calculating users’ similarities are almost Pearson Correlation or (adjusted) Cosine Similarity. This leads to same recommendations for different users because popular objects or users often win a heavier weight in the process of recommendation....

With the development of teaching resources storehouse construction projects continue to enhance, how to solve the problem of benign growth system of teaching resources has appeared. This paper discusses the application of data mining technology in the construction of teaching resources database.

LDA (Latent Dirichlet Allocation) topic model has been widely applied to text clustering owing to its efficient dimension reduction. The prevalent method is to model text set through LDA topic model, to make inference by Gibbs sampling, and to calculate text similarity with JS (Jensen- Shannon) distance....