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Mining Opinion Word from Customer Review
Jiang Tengjiao,Zhong Minjuan,Liao Shumei,Luo Siwen 보안공학연구지원센터 2016 International Journal of Database Theory and Appli Vol.9 No.2
Online customer review is considered as a significant informative resource which is useful for both potential customer and product manufacturers. As a result, it is one of the most challenging tasks to mine customer reviews automatically and to provide users with opinion summary. Product features and opinion word play the most important roles in the customers’ opinions mining. In this paper, we dedicate our work to opinion word mining. We proposed an approach for opinion word identification based on the association rule mining algorithm. The method makes full use of co-occurrence syntactic characteristic between product features and opinion word. Firstly, the product feature is identified by two-stage filtering scheme, and secondly the opinion word is extracted through association rule mining. The final experiment results show that the proposed method could not only obtain the product features related to domain characteristics, but identify the opinion word effectively. Meanwhile, our approach possesses much higher precision and recall than Hu’s work.
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Effects of Cavity Size and Density on Polymer Micro Hot Embossing
Xiang Zhang,Ge Fang,Tengjiao Jiang,Na Zhao,Junfeng Li,Bowen Dun,Qian Li 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.
We designed nine micro molds with various cavity geometric parameters to investigate their effects on micropillars replication of the amorphous polymer via micro hot embossing. Picoseconds laser was used to fabricate the micro holes array on the stainless steel plates with 200 μm thickness as micro molds. The mechanical behavior of PMMA above glass transition temperature was investigated by uniaxial compression tests at various temperatures and strain rates, the results were used in simulation as constitutive relation. Confocal microscope and optical microscope showed that the replication height has a complicate nonlinear relationship with cavity size and density. DEFORM 3D was used to model and simulate the embossing process, and it is a good approach to investigate the micropallars replication heights, front angles and filling ratios.
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