1, one-frame retrieval
As long as you enter the homepage of China HowNet, you can directly enter search terms in the input box for retrieval, which is quick and convenient. However, the retrieval operation of one frame is simple, and the retrieval result may not be so accurate. Finally, it is common to retrieve thousands of documents.
2. Advanced retrieval
China HowNet Advanced Search can set multiple search fields and enter multiple search terms at the same time. According to Boolean logic ("or, and, not"), you can limit the relationship between more search words-"or contains, contains, does not contain", and find the literature resources you want more accurately.
3. Publication retrieval
As the name implies, publication retrieval is to make it easier for small partners to directly retrieve published documents. The publication source navigation of publication retrieval mainly includes the navigation system of periodicals, degree-granting units, conferences, newspapers, yearbooks and reference books.
4, professional retrieval
You can already see the input method at the bottom of the professional search page. Just enter the space bar, and the steps of related logical words will pop up, which is convenient for everyone to choose related logical relationships for combination. In other words, all you need to do is enter the search term and add the space bar to select the logical relationship.
5. Author post retrieval and sentence retrieval
The author's post retrieval and sentence retrieval are more aimed at small partners who need to find an article or part of an article, and the retrieval results will be more targeted. Although the frequency of these two retrieval methods will be relatively low, HowNet has a variety of methods and skills to fully meet the needs of users and make better use of the vast literature resources of China HowNet.
Brief introduction of hownet:
HowNet, the concept of national knowledge infrastructure, was put forward by the World Bank in 1998. CNKI project is an information construction project aimed at realizing the dissemination, enjoyment and value-added utilization of knowledge resources in the whole society. Initiated by Tsinghua University and Tsinghua Tongfang, it was established in June 1999. On May 20 19, the online learning platform of Scientific Research Integrity and Academic Norms was officially launched in China HowNet.
Refer to the above? Baidu encyclopedia-hownet