• current
    • legacy
    Language
    C# Java
    Article For
    4.0 4.1 5.0 5.1 5.2 5.3
    see on GitHub

    Session: How to Use MoreLikeThis

    MoreLikeThis is available through query methods and will return similar documents according to the provided criteria and options.

    Syntax

    query.moreLikeThis(moreLikeThis);

query.moreLikeThis(builder);
    Parameters
    moreLikeThis MoreLikeThisBase Defines the type of MoreLikeThis that should be executed
    builder function Builder with fluent API that constructs the MoreLikeThisBase instance

    Builder

    builder.usingAnyDocument();

builder.usingDocument(documentJson);

builder.usingDocument(filterBuilder);

builder.withOptions(options);
    Parameters
    documentJson string Inline JSON document that will be used as a base for operation
    builder (filterBuilder) => void Filtering expression utilized to find a document that will be used as a base for operation
    options object Non-default options that should be used for operation
       minimumTermFrequency number Ignores terms with less than this frequency in the source doc
       maximumQueryTerms number Returns a query with no more than this many terms
       maximumNumberOfTokensParsed number The maximum number of tokens to parse in each example doc field that is not stored with TermVector support
       minimumWordLength number Ignores words less than this length or, if 0, then this has no effect
       maximumWordLength number Ignores words greater than this length or if 0 then this has no effect
       minimumDocumentFrequency number Ignores words which do not occur in at least this many documents
       maximumDocumentFrequency number Ignores words which occur in more than this many documents
       maximumDocumentFrequencyPercentage number Ignores words which occur in more than this percentage of documents
       boost boolean Boost terms in query based on score
       boostFactor number Boost factor when boosting based on score
       stopWordsDocumentId string Document ID containing custom stop words
       fields string[] Fields to compare

    Example I

    // Search for similar articles to 'articles/1'
// using 'Articles/MoreLikeThis' index and search only field 'body'
const options = { fields: [ "body" ] };

const articles = await session
    .query({ indexName:  "Articles/MoreLikeThis" })
    .moreLikeThis(builder => builder
        .usingDocument(x => x.whereEquals("id()", "articles/1"))
        .withOptions(options))
    .all();
    from index 'Articles/MoreLikeThis' 
where morelikethis(id() = 'articles/1', '{ "Fields" : [ "body" ] }')

    Example II

    // Search for similar articles to 'articles/1'
// using 'Articles/MoreLikeThis' index and search only field 'body'
// where article category is 'IT'
const options = { fields: [ "body" ] };
const articles = await session
    .query({ indexName: "Articles/MoreLikeThis" })
    .moreLikeThis(builder => builder
        .usingDocument(x => x.whereEquals("id()", "articles/1"))
        .withOptions(options))
    .whereEquals("category", "IT")
    .all();
    from index 'Articles/MoreLikeThis' 
where morelikethis(id() = 'articles/1', '{ "Fields" : [ "body" ] }') and category == 'IT'

    Related Articles

    Session

    Querying

    Home / Docs / Client Api / Session / Querying / How To Use Morelikethis