Typo Tolerace

Forgive spelling mistakes.

Our users are humans, and like everyone, they may make spelling mistakes. We can forgive one or two mistakes by setting "Typo Tolerance" on the Search level.

Attributes

Not all attributes should be a good fit for Search "Typo Tolerance". Take the following Document, for example:

{
  "name": "Finding Nemo",
  "category": ["Adventure", "Family"],
  "release_year": "2003",
  "duration_minutes": 100
}

The name attribute is a perfect fit for Typo Tolerance, unlike release_year where the year has to be more precise.

You can pick your Typo Tolerated attributes in your Search settings in the Sigmie UI.

Tolerance

There are 2 settings that you can configure for typo tolerance.

1 Typo characters

The minimum number of characters a word in the query string must contain to allow 1 typo.

This means if we set this setting to 3 and misspell the word red by writing rid.

The Search will also return matches for red.

But if we have set this setting to 4 because the word red contains only 3 letters, which is less than what we configured.

Documents containing the word red won't be matched.

Here are more examples that will match if we set this setting to 5.

• Simda -> Simba
• Mourasa -> Moufasa
• Punba -> Pumbaa

Also, here ane are more examples that won't match.

• Nela -> Nala
• Zezu -> Zazu
• Skar -> Scar

2 Typos characters

Same the 2 typos settings, defines the minimum number of characters a word in the query string must contain to allow 2 typos.

Here are more examples that will match if we set this setting to 5.

• Simab -> Simba
• Mourada -> Moufasa
• Punba -> Pumbaa

Also, here ane are more examples that won't match.

• Nella -> Nala
• Zesu -> Zazu
• Skkar -> Scar

3 Typos or more

Allowing more than 2 typos in a word can use too many resources, plus it mostly leads to false positives.

Therefore allowing 3 or more typos is not possible.