Named Entity Recognition 25.3
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.

Copyright 2013-2025 Open Text
Version 25.3 | Last updated July 2025

Send documentation feedback

Close

Send documentation feedback

To send feedback using your default email client, open an email window.

Otherwise, send your feedback and the information below to MFI-swpdl.idoldocsfeedback@opentext.com.

We appreciate your feedback!

Product: Knowledge Discovery Named Entity Recognition 25.3

Topic Title: Supported Unicode Character Classes