Zhang Pengyi,Su Jie,Zhang Jiuzhen
图书与情报. 2016, 36(04): 89.
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This paper aims to evaluate a socially constructed Web classification, the Zhihu topic hierarchy. We sampled four discipline hierarchies (philosophy, physics, sociology, and literature) and compared them with the equivalent sections of CLC and LCC using quantitative measures (topic overlap) and qualitative measures (classification criteria, or dering of classes, equivalence, hierarchical and related relations, and the naming of classes). The socially constructed topic hierarchy has very small overlap with traditional classification schemes, contains large number of classes, and relationships seem to be valid regionally but messy as a whole. The topic hierarchy is not a rigid classification, but rather a classification on top and sorted tags at the bottom. It reflects the needs of users and may provide insights to organizing user generated knowledge resources.