1. Quick search: there is only one search box, with no field, no word position and no word frequency. The system will search and match the full text.
2. Standard retrieval: We can define various retrieval fields and specify word frequency. And carry out effective Boolean logic combination retrieval to reduce retrieval redundancy and improve retrieval efficiency.
3. Professional retrieval: according to the actual needs of users, the retrieval method of combined logical expressions is provided to effectively improve the precision rate.
Extended data
The contents of the retrieval include
1, classified statistics
(1) The number of documents published by more than 7,000 academic journals of natural science and social science in China and their classification statistics;
(2) Citation quantity, citation link quantity and classification statistics of papers in each journal;
(3) Statistics on publication, number of citations and author institutions of periodical papers; Statistics of website visits and IP addresses of China HowNet Center.
2. Knowledge retrieval
There are literature retrieval, digital retrieval, translation assistant and graphic retrieval.
3. Professional theme
(1) Academic resources: comprehensive navigation of academic resources websites.
(2) Academic statistical analysis: performance evaluation and statistical analysis of academic literature.