I am wondering if it is possible to view outlink categories of a given article in Wikipedia? For example, consider the Wikipedia article about 'Data Mining'. What are the outlink categories of "Data Mining" article and how to find them in the Wikipedia page?
According to the paper "Using Wikipedia knowledge to improve text classification "; the outlink categories and their count of "Data Mining", "Machine Learning" and "Computer Network" are as follows.
However, I still could not discover how they obtained these outlink categories and their counts. Please help me.