When using the new homepage of HowNet, do friends often enter their own search terms directly in this box and use a box to search for the documents they need?
For example, Xiao Zhi recently used the search box to find the hot topic of 5G, and actually got more than 27,000 results. I really want to find the resources I need. Isn't this a needle in a haystack? I can't finish reading so many documents with all my strength!
How can this be good? Don't worry! Listen to Xiao Zhi give you a slow ~ slow ~ road ~
The one-frame search method that people often use directly on the homepage of HowNet is actually the default cross-database search, including academic journals, doctoral dissertations, conference papers and newspapers. Moreover, the retrieval content of the "subject" retrieval field includes title, keywords and abstract, and the retrieval results will be more comprehensive and diverse. If "Full Text" is selected, the retrieval results will of course be very comprehensive, and no data will be missed, but at the same time,
Of course, in addition to cross-database retrieval, friends sometimes choose single-database framework retrieval, so that the retrieval results will only be directed at documents in a database, such as books, yearbooks, dictionaries, ancient books, laws and regulations, government documents, enterprise standards, scientific and technological reports, etc., and you can directly use single-database retrieval, which is convenient and fast, and the retrieval results will be more accurate and the number will be less, but it will also be relatively less of other important resources. Can all kinds of important resources be included in the retrieval scope, and at the same time, without facing thousands of retrieval results, can we accurately retrieve the desired literature resources? Can you have your cake and eat it?
Speaking of which, our advanced retrieval will appear soon!
Advanced search can set multiple search fields and enter multiple search terms at the same time. According to Boolean logic (which can be simply understood as the relationship of intersection, union and complement or the relationship of OR, AND and NOT), more search words can be defined in HowNet Advanced Search-three relationships of "or including, including and not including", so as to obtain the literature resources you want more accurately.
In addition, you can also filter from three categories: literature classification catalogue, cross-database selection and new publishing mode, which can help you define more literature sources and accurately find the literature resources you need. Of course, the search scope can also be narrowed from the dimensions of publication time, source and funding. In short, there are only unexpected literature resources, and there are no literature resources that can't be screened by advanced retrieval.