有一个应用程序是很好的例子，它处理诸如此类的内容，比如说文档归档器，您想要从内容构建索引和其他信息。
A good example is an application that processes content, such as a document archiver where you want to build indexes and other information from the content.
关于DITA信息类型专门化和基于主题处理的例子，请参阅Specializingtopictypesin DITA。
For examples of specializations and topic-based processing with DITA information types, see Specializing topic types in DITA.
按照例子的要求，聚集信息需要保存目前为止所有（该组）传入值的加权和，并保存已经处理过的数值的数量。
Referring to our example, the aggregation information needs to contain the weighted sum of all values passed in so far (for that group) and the count for the number of values already processed.
按照例子的要求，聚集信息需要保存目前为止所有（该组）传入值的加权和，并保存已经处理过的数值的数量。
Referring to our example, the aggregation information needs to contain the weighted sum of all values passed in so far (for that group) and the count for the number of values already processed.
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