数据挖掘的一个重要的任务就是发现数据库中的关联规则，也就是发现数据库中项集之间有价值的规则或联系。
Discovering association rules is one of the most important tasks of data mining, that is, to find interesting associations or correlation relationships among a large set of data items.
每当用户心里想着知识库中没有的项玩这个游戏时，应用程序会在数据库中添加该项以及适当的问题和答案。
Each time a user plays and thinks of an item not in the knowledge base, the application adds that item and the appropriate question and answers to the database.
组件的服务器端逻辑调用这些方法来直接操作它在存储库中的项。
The server-side logic of a component calls these methods to directly manipulate its items in the repository.
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