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2. Keyword extraction - Wikipedia

   en.wikipedia.org/wiki/Keyword_extraction

   keyword extraction (keywords are chosen from words that are explicitly mentioned in original text). Methods for automatic keyword extraction can be supervised, semi-supervised, or unsupervised. [ 4 ] Unsupervised methods can be further divided into simple statistics, linguistics or graph-based, or ensemble methods that combine some or most of ...

3. Phrase search - Wikipedia

   en.wikipedia.org/wiki/Phrase_search

   Phrase search is one of many search operators that are standard in search engine technology, along with Boolean operators (AND, OR, and NOT), truncation and wildcard operators (commonly represented by the asterisk symbol), field code operators (which look for specific words in defined fields, such as the Author field in a periodical database ...

4. AOL Search FAQs - AOL Help

   help.aol.com/articles/aol-search-faqs

   Typing a basic keyword in a search box prompts the search engine to scan its index for websites containing that keyword. It then delivers the top results, considering relevance and popularity. A single keyword often yields overly broad results. To refine your search, combine words into keyword phrases.

5. Keyword density - Wikipedia

   en.wikipedia.org/wiki/Keyword_density

   Keyword density is the percentage of times a keyword or phrase appears on a web page compared to the total number of words on the page. In the context of search engine optimization, keyword density can be used to determine whether a web page is relevant to a specified keyword or keyword phrase.

6. Navigate, read and search on AOL.com - AOL Help

   help.aol.com/articles/navigate-read-and-search...

   Keyword searches give you a wide variety of results without having to perform an advanced search. You are able to search less and discover more! Type a desired word or phrase in the AOL Search field and hit the Enter key on your keyboard or Click the Search button. AOL Search will find the info you want.

7. Approximate string matching - Wikipedia

   en.wikipedia.org/wiki/Approximate_string_matching

   A fuzzy Mediawiki search for "angry emoticon" has as a suggested result "andré emotions" In computer science, approximate string matching (often colloquially referred to as fuzzy string searching) is the technique of finding strings that match a pattern approximately (rather than exactly).