关键词: 偏序集, 多准则决策, Hasse图, 关系矩阵

Abstract: It clearly defines the online group evaluation model on the basis of relevant research. The model evaluates the online evaluation information with a vector evaluation matrix, and converts the amount of data into the way of easy-to-calculate. In order to solve the problem that the vector is difficult to be assembled and the attribute weights is difficult to be determined, It gives the order of schemes by using the poset knowledge. With the information of weights order, it uses the poset decision method to transform the vector evaluation matrix, and gets the comparison relation matrix between the schemes. The online evaluation model is represented by the poset can not only be able to sort the scheme, but also can recommend the personalized product, visualizing the hierarchical relationship between the programs with the Hasse diagram. Finally, it reflects the unique and practical method of this article through the example of automotive products online evaluation information based on car home website.

Key words: Poset, multi-criteria decision, hasse diagram, relation matrix