＂Chart＂ is an important part of books among most modern publications, and plays a role in expressing book content directly. In book cataloging of library, ＂chart＂ involves category setting, classification, subject and description for classification, and refers to the 105, 200, 215 and 6-- fields. Therefore, ＂chart＂ is related to cataloging closely, the different comprehensions of every online cataloging institutions for ＂chart＂ make bibliography data very different, and affect information co-construction and sharing of bibliography resources.%在多数现代出版物中，“图”作为重要的组成部分，起着直观表达图书内容的作用。就图书馆编目工作而言，“图”涉及分类法的类目设置、分类、主题、著录4个方面，涉及机读目录格式105、200、215及6-字段。因此，“图”与编目工作产生了千丝万缕的联系，而各联机编目机构对“图”的不同理解使书目数据千差万别，严重影响了书目资源的共建共享。
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