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Elastic Docs ›Elasticsearch.Net and NEST: the .NET clients [6.x] ›Query DSL ›Specialized queries

More Like This Query Usage

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More Like This Query Usage

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Fluent DSL example

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q
.MoreLikeThis(sn => sn
    .Name("named_query")
    .Boost(1.1)
    .Like(l => l
        .Document(d => d.Id(Project.Instance.Name).Routing(Project.Instance.Name))
        .Text("some long text")
    )
    .Analyzer("some_analyzer")
    .BoostTerms(1.1)
    .Include()
    .MaxDocumentFrequency(12)
    .MaxQueryTerms(12)
    .MaxWordLength(300)
    .MinDocumentFrequency(1)
    .MinTermFrequency(1)
    .MinWordLength(10)
    .StopWords("and", "the")
    .MinimumShouldMatch(1)
    .Fields(f => f.Field(p => p.Name))
    .Unlike(l => l
        .Text("not like this text")
    )
)

Object Initializer syntax example

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new MoreLikeThisQuery
{
    Name = "named_query",
    Boost = 1.1,
    Fields = Fields<Project>(p => p.Name),
    Like = new List<Like>
    {
        new LikeDocument<Project>(Project.Instance.Name) { Routing = Project.Instance.Name },
        "some long text"
    },
    Analyzer = "some_analyzer",
    BoostTerms = 1.1,
    Include = true,
    MaxDocumentFrequency = 12,
    MaxQueryTerms = 12,
    MaxWordLength = 300,
    MinDocumentFrequency = 1,
    MinTermFrequency = 1,
    MinWordLength = 10,
    MinimumShouldMatch = 1,
    StopWords = new[] { "and", "the" },
    Unlike = new List<Like>
    {
        "not like this text"
    }
}

Example json output.

{
  "more_like_this": {
    "fields": [
      "name"
    ],
    "minimum_should_match": 1,
    "stop_words": [
      "and",
      "the"
    ],
    "min_term_freq": 1,
    "max_query_terms": 12,
    "min_doc_freq": 1,
    "max_doc_freq": 12,
    "min_word_length": 10,
    "max_word_length": 300,
    "boost_terms": 1.1,
    "analyzer": "some_analyzer",
    "include": true,
    "like": [
      {
        "_index": "project",
        "_type": "doc",
        "_routing": "Durgan LLC",
        "_id": "Durgan LLC"
      },
      "some long text"
    ],
    "unlike": [
      "not like this text"
    ],
    "_name": "named_query",
    "boost": 1.1
  }
}
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