Fuzzy queries

• A way to account for typos and misspellings
• The levenshtein edit distance accounts for:
• substitution: interstellar -> intersteller
• insertions: interstellar -> insterstellar
• deletion: interstellar -> interstelar
• The edit distance can be parametrized with fuzziness

curl -s "localhost:9200/movies/_search" \
  --request GET \
  --header "Content-Type: application/json" \
  --data @search.json \
| jq .

Fuzziness

• Fuzziness defines the levenshtein edit distance
• The auto option defines the edit distance dynamically
• "fuzziness": "auto"
• 0 to 1-2 character strings
• 1 to 3-5 character strings
• 2 for anything else

{
  "query": {
    "fuzzy": {
      "title": {
        "value": "intrsteller",
        "fuzziness": 2
      }
    }
  }
}