Mappings on filed Elastic Search

问题

I am using elastic search for autocompletion and also to correct spelling mistakes.I have this mapping for my field(for auto-completion).

    **Mapping:**

      "name": {
                "type": "text",
                "analyzer": "autocomplete"
              }

Now i want to implement phrase suggester on this field.When i use this it is giving wrong result.Thats because of existing mapping i think.

    **POST XYZ/_search**

    {
      "suggest": {
        "text": "ipone 16",
        "simple_phrase": {
          "phrase": {
            "field": "name",
            "highlight": {
              "pre_tag": "<em>",
              "post_tag": "</em>"
            }
          }
        }
      }
    }

    **Results:**
      "options": [
              {
                "text": "i ip ipo iphon iphone 1 16",
                "highlighted": "i ip ipo <em>iphon iphone</em> 1 16",
                "score": 1.6111489e-8
              },
              {
                "text": "i ip ipo iphon iphon 1 16",
                "highlighted": "i ip ipo <em>iphon iphon</em> 1 16",
                "score": 1.4219211e-8
              },
              {
                "text": "i ip ipo ipho iphone 1 16",
                "highlighted": "i ip ipo <em>ipho iphone</em> 1 16",
                "score": 1.3510152e-8
              },
              {
                "text": "i ip ipo ipho iphon 1 16",
                "highlighted": "i ip ipo <em>ipho iphon</em> 1 16",
                "score": 1.1923397e-8
              },
              {
                "text": "i ip ipo iron iphone 1 16",
                "highlighted": "i ip ipo <em>iron iphone</em> 1 16",
                "score": 6.443544e-9
              }
            ]

    **From the document i should use this for phrase suggester.**

    "mappings": {
        "test": {
          "properties": {
            "title": {
              "type": "text",
              "fields": {
                "trigram": {
                  "type": "text",
                  "analyzer": "trigram"
                },
                "reverse": {
                  "type": "text",
                  "analyzer": "reverse"
                }
              }
            }
          }

**How can i use two different mapping on same filed?**

回答1:

• As your results are not tokenized properly the problem could be from your aurocomplete analyzer. please provide your _settings to see the defination for your analyzers.

• Do Your query on name.trigram.

• After solving this problem it's good to prune your result using collate

回答2:

You can write a query like this. Please provide output for this query.
It's also good to have your trigram analyzer settings (tokenizer, char mappers and token filters)

{
   "suggest": {
      "text": "noble prize",
      "simple_phrase": {
         "phrase": {
            "field": "name_suggest.trigram",
            "size": 1,
            "gram_size": 3,
            "direct_generator": [
               {
                  "field": "name_suggest.trigram",
                  "suggest_mode": "always"
               }
            ],
             "collate": {
               "query": {
                  "inline": {
                     "match": {
                        "title": "{{suggestion}}"
                     }
                  }
               },
               "prune": true
            },
            "highlight": {
               "pre_tag": "<em>",
               "post_tag": "</em>"
            }
         }
      }
   }
}

来源：https://stackoverflow.com/questions/43973192/mappings-on-filed-elastic-search