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Chinese word segmentation plays an important role in Chinese text mining. It is the foundation of automatic relation extraction and identification in Chinese information processing. In this paper, we propose a method for Chinese word segmentation based on conditional random fields (CRF) with character clustering. For the character clustering, we firstly use the Skip-Gram model to obtain character...
This paper compares indicators of existing corporate governance index evaluation system, and then establishes a more comprehensive evaluation model of corporate governance composed of two subsystems—internal corporate governance evaluation subsystem and external corporate governance evaluation subsystem, including the seven elements and fifteen evaluation indicators. Finally, we selected three companies...
Summary We summarize in this chapter polynomially solvable subclasses of binary quadratic programming problems studied in the literature and report some new polynomially solvable subclasses revealed in our recent research. It is well known that the binary quadratic programming program is NP-hard in general. Identifying polynomially solvable subclasses of binary quadratic programming problems not only...
In this article, we present several sufficient optimal conditions for unconstrained quadratic binary problems, which can be applied in algorithms combining with SDP relaxations in branch-and-bound approaches for the primal problem. These optimal conditions can work for many situations when the Lagrangian duality gap is not zero.
With the popularity of database technology matures and data applications, the amount of data accumulated by the human increases rapidly. Facing the extremely large amount of data, we gradually step into a “rich data, poor knowledge” embarrassing situation. The data mining (Data Mining) rise to solve this problem. In this paper, we study the means and methods of clustering analysis that processing...
Based on the optimal conditions for binary quadratic programming, we extend the optimal conditions to the quadratic integer problem with general box integer constraints and construct a necessary condition to quadratic integer problems with a single linear constraint.
In this paper the modeling and simulation of a class of discrete-time stochastic bilinear systems are studied, the extended least squares (ELS) algorithm are used to estimate unknown parameters of the system, and two simulation examples show that the ELS algorithms of the modeling and simulation are effective for discrete-time stochastic bilinear systems with correlated noises and unknown parameters...
The authors demonstrated decoration of Ru nanoparticles on the surface of double-walled CNTs (DWCNTs) using a chemical process and studied their field emission properties. Ru is more stable than the low work function alkali metals when exposed to oxygen. Moreover, the melting point of Ru is much higher than that of RuO2.
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