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elasticsearchsimilaritymorelikethis

ElasticSearch more_like_this with restricted result set

I want to run a more_like_this query, but only get the top results within a specific set of documents, so I would provide the IDs of these documents. Is there any way to do this? Docs indicate no.

Solution

  • One way would be to use a filtered query and use the id filter to specify the set of documents you want the more_like_this query to work on

    Example:

    {
   "query": {
      "filtered": {
         "query": {
            "more_like_this": {
               "fields": [
                  "ticker.whitespace"
               ],
               "like_text": "WFC",
               "min_term_freq": 1,
               "max_query_terms": 12
            }
         },
         "filter": {
            "ids": {
               "values": [
                  "7667"
               ]
            }
         }
      }
   }
}