社会化构建标签等级的评价研究
2016-10-21张鹏翼苏杰张久珍
张鹏翼 苏杰 张久珍



摘 要:文章以知乎话题结构为例,对采用社会化方式构建的标签等级进行评价,探讨了受控语言和大众分类法的结合机制。抽取知乎的四个学科话题等级结构(哲学、物理学、 社会学、文学)与《中图法》及《国会法》进行对比,综合使用定量(重合度)、定性(划分标准、引用次序、横向关系揭示处理、等级关系、同位排列、类目命名等)指标进行评价。发现知乎话题结构等级与传统学科分类法重合度不高,呈现出类目数量大、局部有逻辑、全局无规律的特点,存在划分及排序标准不一致,话题名称较随意等问题。认为社会化构建的知乎话题等级,并非严格的分类体系,而是话题分类与主题标签结合的一种形态,不具备系统性、逻辑性,但交由用户构建、体现用户主导原则,对于用户生成知识资源的组织有借鉴意义。
关键词:标签等级;大众分类法;社会化标注;话题结构;知乎
中图分类号: G254 文献标识码: A DOI:10.11968/tsyqb.1003-6938.2016081
Evaluation of a Socially Constructed Tag Hierarchy: A Case Study of Zhihu Topic Structure
Abstract 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, ordering 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.
Key words tag hierarchy; Folksonomy; social tagging; topic hierarchy; Zhihu
1 引言
分类法是信息组织的重要方法之一,从传统的图书分类法如《中国图书馆分类法》(以下简称《中图法》)、《美国国会图书馆图书分类法》(以下简称《国会法》),到网页分类目录如Yahoo Directory2和Open Directory Project3,都提供针对信息资源的系统性的整序。学科分类法多采用等级树状结构,具有系统性、层次性的优点[1]。而随着Web 2.0的发展,社会化标注(social tagging)和大众分类法(Folksonomy)为组织用户生成内容(UGC)提供了新的方法和思路[2]。然而,传统分类法编制困难、更新周期长,大众分类法则缺乏等级结构和词汇控制,对于检索和浏览的支持较为有限,都不是组织网络资源的理想工具。……
