7.00.02 - FindNamedEntity Arguments - Aster Analytics

Teradata Aster® Analytics Foundation User GuideUpdate 2

Aster Analytics
Release Number
Release Date
September 2017
Content Type
Programming Reference
User Guide
Publication ID
English (United States)
Specifies the name of the input table column that contains the text to analyze.
[Optional] Required if you do not specify configuration_table, in which case you cannot specify 'all'.

Specifies the model items to load.

If you specify both configuration_table and this argument, the function loads the specified model items from configuration_table.

Default: 'all' (If you specify configuration_table but omit this argument).

The entity_type is the name of an entity type (for example, PERSON, LOCATION, or EMAIL), which appears in the output table.

The model_type is one of these model types:

  • 'max entropy'

    Maximum entropy language model generated by training.

  • 'rule'

    Rule-based model, a plain text file with one regular expression on each line.

  • 'dictionary'

    Dictionary-based model, a plain text file with one word on each line.

  • 'reg exp'

    Regular expression that describes entity_type.

If model_type is 'reg exp', specify regular_expression (a regular expression that describes entity_type); otherwise, specify model_file (the name of the model file). Before calling the function, add the location of every specified model_file to the user/session default search path.

If you specify configuration_table, you can use entity_type as a shortcut. For example, if the configure_table has the row 'organization, max entropy, en-ner-organization.bin', you can specify Model('organization') as a shortcut for Model('organization:max entropy:en-ner-organization.bin').

For model_type 'max entropy', if you specify configuration_file and omit this argument, then the JVM of the worker node needs more than 2GB of memory.
[Optional] Specifies the number of context words to output. If context_words is n (which must be a positive integer), the function outputs the n words that precede the entity, the entity, and the n words that follow the entity. Default: 0.
[Optional] Specifies the name of the output table column that contains the entity names. Default: 'entity'.
[Optional] Specifies the names of input columns to copy to the output table. No accumulate_column can be an entity_column. Default: All input columns.