Named Entity Recognition 25.4
Named Entity Recognition User and Programming Guide

# Supported Unicode Character Classes

This section lists the Unicode character classes that are supported by the regular expression engine. Use the one- or two-letter class name in your patterns. For example to match a currency symbol:

    \p{Sc}

The supported classes are:

- `C` - Other
- `Cc` - Control
- `Cf` - Format
- `Co` - PrivateUse
- `Cs` - Surrogate
- `L` - Letter
- `Ll` - LowercaseLetter
- `Lm` - ModifierLetter
- `Lo` - OtherLetter
- `Lt` - TitlecaseLetter
- `Lu` - UppercaseLetter
- `M` - Mark
- `Mc` - SpacingMark
- `Me` - EnclosingMark
- `Mn` - NonSpacingMark
- `N` - Number
- `Nd` - DecimalNumber
- `Nl` - LetterNumber
- `No` - OtherNumber
- `P` - Punctuation
- `Pc` - ConnectorPunctuation
- `Pd` - DashPunctuation
- `Pe` - ClosePunctuation
- `Pf` - FinalPunctuation
- `Pi` - InitialPunctuation
- `Po` - OtherPunctuation
- `Ps` - OpenPunctuation
- `S` - Symbol
- `Sc` - CurrencySymbol
- `Sk` - ModifierSymbol
- `Sm` - MathSymbol
- `So` - OtherSymbol
- `Z` - Separator
- `Zl` - LineSeparator
- `Zp` - ParagraphSeparator
- `Zs` - SpaceSeparator

Character class assignments are as provided by unicode.org - see http://www.unicode.org/Public/UNIDATA/UnicodeData.txt.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Named Entity Recognition 25.4

Topic Title: Supported Unicode Character Classes