The STEMMING directive applies the Porter stemmer algorithm for English words. The Porter stemmer has excellent trade-off between speed, readability, and accuracy. It stems using a set of rules (transformations) applied in a succession of steps. Generally, it applies approximately 60 rules in 6 steps.
Syntax
| Code Block |
|---|
stemming <column>:column |
The <column>column contains a bag of words of type string array or type string list.
...
Applying this directive:
| Code Block |
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stemming :word |
The result would be this record:
...