What is the basic strategy of network information retrieval?

Information retrieval strategy based on network environment From the basic working principle of computer network information retrieval, we can easily see that the query expression input by information users must match the information characteristics of the index database system in order to accurately retrieve the required information.

The design of network information retrieval strategy should follow the principles of fast, accurate, complete and low cost, and realize the optimization of retrieval strategy.

1, define the retrieval target and determine the retrieval items.

Analyze topics, use Boolean logic operators to construct retrieval expressions, etc.

2. Choose a suitable retrieval system.

Select the retrieval system according to the retrieval theme and the characteristics of the retrieval system.

3. Treat the retrieval results correctly.

Treatment methods of missed detection, false detection, over-detection and no retrieval results.

4. Choose the best time to surf the Internet

Choose a time period with faster network speed.

In most cases, if you have a good search strategy, you can correctly apply Boolean logic symbols, and you are familiar with the characteristics of each search engine, you can get a good search result. In addition, in some cases, other technologies can be used to improve the retrieval results.

1, expand the search scope and improve the recall rate.

2. Narrow the search range and improve the accuracy.

3, Ctrl ten f

After searching for the required document through a search engine and connecting to related web pages, it is sometimes found that the required document does not appear in the current field of vision, which may be because the document is stored at the bottom of the current web page. A quick way is to press "Ctrl 10 F" to find files on the current page.

4. Mark the search results.

Avoid duplication.