What does Tik Tok mail filtering mean?

1. message filtering: according to the user's interest and demand for messages, filter out messages that users don't need and are useless, and get messages that meet the user's interests. This process is called mail filtering.

2. The difference between message filtering and message retrieval is that message retrieval is a process of finding messages from a large number of messages according to the needs of users, and filtering behavior occurs in this process, so it can be said that message filtering behavior occurs in message retrieval. However, for mail filtering behavior, there is not necessarily mail retrieval behavior. For example, some message providers actively block some harmful messages.

3. Message classification is the premise of message retrieval, which is to classify and sort messages so that people can use them more conveniently. Message classification can be said to be the reorganization of messages, and messages are not lost, while message filtering is the loss of some messages.

4. Information extraction is a process of extracting relevant messages from unstructured texts according to predefined templates describing the required message specifications. This template usually describes the types of certain events, entities or relationships. Information extraction can help people quickly find and browse useful information in the text. In this process, there is no choice behavior, but a direct target behavior. Message filtering should analyze which messages should be kept and which messages should be filtered.