Use fuzzy search for collections search #3092
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The collections search returns results with exact matches only. Users do however expect the search to be fuzzy by default, i.e. "Romania" should also match "Romanian" etc. By changing the query type from `query_string` to `multi_match`, we can use fuzzy search by default. The advantage of using fuzzy search is that it is applied at search time, i.e. we do not need to change the index configuration or re-index contents. The main disadvantage is that it doesn't cover all variations that would be covered if we used proper stemming. For example, the following variations are not matched: * Contracts/contracting * Company/companies * Malta/Maltese Also, fuzzy search cannot be combined with prefix search (for example "Open" does not match "OpenContracting"). Fix #2109
This will allow the following edit distances based on term length: 0..2: must match exactly 3: one edit allowed >3: two edits allowed
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stchris
approved these changes
Jun 12, 2023
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The collections search returns results with exact matches only. Users do however expect the search to be fuzzy by default, i.e. "Romania" should also match "Romanian" etc. By changing the query type from
query_stringtomulti_match, we can use fuzzy search by default.The advantage of using fuzzy search is that it is applied at search time, i.e. we do not need to change the index configuration or re-index contents.
The main disadvantage is that it doesn't cover all variations that would be covered if we used proper stemming. For example, the following variations are not matched:
Also, fuzzy search cannot be combined with prefix search (for example "Open" does not match "OpenContracting").
Fix #2109