Boolean Logic-Search Strings：布尔逻辑搜索字符串

Boolean Logic-Search Strings：布尔逻辑搜索字符串 Using Boolean Logic in Search Strings The use of AND allows the searcher to find documents containing all of the AND specified words or phrases. For example, entering Tax AND Finance finds documents containing both words. The use of quotation marks yields documents that contain an exact phrase. For “ ” example, “Tax Specialist” finds documents that contain that exact phrase. Using OR will generate documents containing at least one of the specified words OR or phrases. For example, entering Biology OR Chemistry finds documents containing either word, but not necessarily both words. The asterisk is a wildcard. Using the wildcard will allow the searcher to find * documents with keywords containing the same root. For example, Manag* returns Wildcard pages containing the words Manager, Managed, Managing. Using AND NOT will exclude any documents containing the specified word or AND NOT phrase. For example, Geology AND NOT Chemistry finds documents which contain Geology but not those which have chemistry as well. The use of NEAR will retrieve documents containing either specified words or NEAR phrases within 10 words of each other. For example, Manager NEAR Personnel. Use parentheses to group Boolean phrases. For example, (Tax AND Specialist) ( ) AND (finance OR accounting) While the use of these Boolean operators often generates good results, sometimes using more advanced Boolean operators is appropriate. Here are some examples of more advanced search methods: The tilda (~) is used to find synonyms or related words. For example, ~ site:www.aol.com~resume will not only find resumes on the AOL site, but will also pull any document similar to a resume such as curriculum vitas. The use of inurl finds pages with a specific word or phrase in the URL. For inurl:text example, using inurl:resume to find all pages that have the word resume in the address of the webpage. The use of intitle is similar to the above. Intitle finds pages that contain the intitle:text specified word or phrase in the page title. For example, the search intitle:accounting would find pages with accounting in the title. This operator will find pages within a specific website. The search site:site name site:www.shopping.com would find pages at the Shopping.com domain. Most of the conventional job boards and resume databases will accept Boolean logic, however some of the niche sites may not. Google and MSN Live also accept the logic as search criteria.