Given a dataset, encodes categorical fields using ordinal encoding, which uses a single column of integers to represent field classes (levels). It then creates a new dataset, with additional fields containing ordinal encodings of the categorical fields.
If classes have a known order (such as Like, Somewhat Like, Neutral, Somewhat Dislike, and Dislike), the integer mapping can be supplied; otherwise, integers are assigned by class count, in descending order (in the case of ties, classes are ordered alphabetically).
