Abstract: Visualization of multi-dimensional data is an effective method for helping people understand and analyse multivariate data sets. Forums in Internet have taken a more and more important role in everyone's life. Visualizing forum data will help analyze the pattern of people's participation in forums. This paper first analyzed the feature of forum data such as closely relation with time, mass data size, multi-level data structure, multiple attributes and complex relation within the data. We proposed three methods, such as parallel coordinate, hierarchical map and curve map to visualize the different datasets in network forum. At last, we took data in a real forum for example and showed the results of visua lization.

Key words: Forum data, Mass data, Visualization of hierarchies