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In text processing, a proximity search looks for documents where two or more separately matching term occurrences are within a specified distance, where distance is the number of intermediate words or characters. In addition to proximity, some implementations may also impose a constraint on the word order, in that the order in the searched text ...
In the search stage, when performing a specific query, only the index is referenced, rather than the text of the original documents. [2] The indexer will make an entry in the index for each term or word found in a document, and possibly note its relative position within the document.
Like a word or phrase search stemming and fuzzy searches can apply. A word input can be put in double "quotes" to turn off stemming. A phrase input can use greyspace to turn on stemming. A single word input can suffix the tilde ~ character for a fuzzy search. A single word input can suffix the star * character for a wildcard search.
In a larger search engine, the process of finding each word in the inverted index (in order to report that it occurred within a document) may be too time consuming, and so this process is commonly split up into two parts, the development of a forward index and a process which sorts the contents of the forward index into the inverted index.
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For example, a search for red apple may return records that contain the word "apple," ones that contain "red," and ones that contain both words no matter where in the record they appear (that is, assuming the search engine applies Boolean OR logic to its keyword search function), whereas a search for "red apple" will only return records that ...
As such, it features word-wheeled search, which displays results as characters are typed. [72] [73] Search folders, which are saved searches, have been updated to include RSS feeds as well. Search folders can be created with a specific search criteria, specifying the subject, type and other attributes of the information being searched.
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