Named Entity Recognition Grammars Package 25.2
Named Entity Recognition Grammars User Guide

# Customize Stop Lists

For some grammars, the post-processing script uses a stop list to discard matches that are likely to be false positives. You can add entries to the stop lists, or remove entries, by modifying the following files.

- `scripts/address_stoplist.lua` contains a list of common words that are likely to indicate a false positive when returned as the `STREET` or `CITY` component of an address match.

- `scripts/names_stoplist.lua` contains two stop lists to discard names. In the `stopnames` list, each component is plausible but the entire match is likely to be a false positive, for example "Christian Church" or "Norman Conquest". The `stopwords` list contains common words that are likely to indicate a false positive when returned as either the `FORENAME` or `SURNAME` component of a name match.

  You can customize the stop lists in this file such that a name can be considered a false positive in one country but not another.

NOTE: If you use more than one of the grammar sets, you must modify the stoplist for each. For example, `scripts/address_stoplist.lua` is available for both PII and PHI, and `scripts/names_stoplist.lua` is available for PII, PHI, and PCI.

The Government grammar set does not have any stoplists by default.

For more information about post-processing, see Configure Post Processing.

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Version 25.2 | Last updated April 2025

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Product: Named Entity Recognition Grammars Package 25.2

Topic Title: Customize Stop Lists