| 摘要 |
A document retrieval system includes a document server and mobile phones. A user may enter search criteria on a search criteria input screen of the mobile phone and transmit them to the document server through a certain network, e.g. the Internet. The document server retrieves documents according to the search criteria and refers to a search record database to determine whether the retrieved documents have ever been searched for and flagged with marks. The document server weights the respective documents on the basis of the marks tagged to the document or those elements that match the search criteria, and metadata included in the marks. Depending on the weight, the documents are listed in the order from the most relevant to or useful for the user when sent back as a search result to the mobile phone.
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