Simple retrieval means that when users use the HowNet search engine, they directly input keywords into the search box for retrieval. This is the simplest retrieval method, which is suitable for beginners or scenes where information is searched quickly.
1, multi-database retrieval
Multi-database retrieval refers to users searching in multiple databases, including periodicals, papers, patents, standards and other different types of data resources. This way can help users to fully understand the research situation in a certain field from multiple angles.
2. Advanced retrieval
Advanced retrieval is a complex retrieval method, which is suitable for scenes that need more accurate and complex search. Users can set multiple conditions in the advanced retrieval interface, including keywords, time range, literature type, source database, etc. In order to obtain search results that are more in line with their own needs.
3, professional retrieval
Professional retrieval is a retrieval method for professional fields, which is suitable for the search needs of professional researchers or specific fields. Users can choose corresponding retrieval strategies and tools according to their own professional fields, so as to obtain more accurate and in-depth search results.
4. Citation retrieval
Citation retrieval refers to retrieval through citation index. Users can find other documents and research results related to them through known documents or authors. This way can help users understand the research frontier and development trend in a certain field.
5. Classified retrieval
Classified retrieval refers to retrieval according to subject classification. Users can choose the corresponding classification method to search according to their own subject background and research field, so as to obtain more systematic and classified search results.
In short, CNKI provides a variety of retrieval methods, and users can choose the appropriate retrieval method according to their own needs and actual conditions, so as to obtain more comprehensive, accurate and in-depth search results.
Expand knowledge:
Retrieval is a Chinese vocabulary, and the pinyin is Ji m 4 n su ǒ, which refers to finding out relevant information from a specific information set according to certain clues and rules, using certain methods and technical means.