main: Must be present in the search request, where "main query" performs a union operation on the search result set
intersection: Perform an intersection operation on the search result set of "main query" and the result set obtained with "intersection query"
scope: "scope query" has the same effect as "intersection query", but does not participate in the document query score (QDS)
exclusion: "exclusion query" is the result of a subset operation of the search results of "main, intersection, scope query" and the search results obtained by "exclusion query"
rerank: "rerank query" does not affect search results, but is used to change the qds value. Available query types include simbst and proxrank
oneterm: When there is a single word, find documents containing that word
nterm: When there are multiple words, find documents containing those words (can use the "option" parameter)
nofm: Find documents that contain at least a percentage given by the "ratio" parameter among all words
ebool: Find documents that satisfy a combination of boolean operators (and, or)
simbst: Among the found documents, those containing the query words will raise the qds by the value given by the "ratio" parameter (used with the "rerank" search type and the "ratio" parameter)
proxrank: Calculate proximity (used with the "rerank" search type)
null: Search the entire document with an empty query
option
String
Optional
Specify options of the query type
and | or
and: Search for documents containing all given words
or: Search for documents that contain any of the given words
ratio
String, Double
Optional
Specify the percentage of a specific query type (used when nofm, simbst type)
0 - 1
term_extractor
String
Optional
Specify how search query terms are extracted
Currently unchangeable (Korean only)
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