| Interface | Description | 
|---|---|
| CharSequenceNormalizer | A char sequence normalizer, used to adjusting (prune, substitute, add, etc.)
 characters in order to remove noise from text | 
| Class | Description | 
|---|---|
| AggregateCharSequenceNormalizer | |
| EmojiCharSequenceNormalizer | Normalizer for emojis. | 
| NumberCharSequenceNormalizer | Normalizer for numbers | 
| ShrinkCharSequenceNormalizer | Normalizer to shrink repeated spaces / chars | 
| TwitterCharSequenceNormalizer | Normalizer for Twitter character sequences | 
| UrlCharSequenceNormalizer | Normalizer that removes URls and email addresses. | 
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