2013-08-28 19:24:34 -04:00
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[[search-more-like-this]]
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== More Like This API
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The more like this (mlt) API allows to get documents that are "like" a
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specified document. Here is an example:
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[source,js]
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--------------------------------------------------
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$ curl -XGET 'http://localhost:9200/twitter/tweet/1/_mlt?mlt_fields=tag,content&min_doc_freq=1'
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--------------------------------------------------
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The API simply results in executing a search request with
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<<query-dsl-mlt-query,moreLikeThis>> query (http
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parameters match the parameters to the `more_like_this` query). This
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means that the body of the request can optionally include all the
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request body options in the <<search-search,search
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2014-05-08 06:21:18 -04:00
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API>> (aggs, from/to and so on). Internally, the more like this
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API is equivalent to performing a boolean query of `more_like_this_field`
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queries, with one query per specified `mlt_fields`.
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2013-08-28 19:24:34 -04:00
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Rest parameters relating to search are also allowed, including
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`search_type`, `search_indices`, `search_types`, `search_scroll`,
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`search_size` and `search_from`.
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When no `mlt_fields` are specified, all the fields of the document will
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be used in the `more_like_this` query generated.
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2014-05-06 10:19:23 -04:00
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By default, the queried document is excluded from the response (`include`
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set to false).
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2013-08-28 19:24:34 -04:00
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Note: In order to use the `mlt` feature a `mlt_field` needs to be either
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be `stored`, store `term_vector` or `source` needs to be enabled.
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