Define low level Classifier API which only works on ordered int features
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Key: OPENNLP-116
URL: https://issues.apache.org/jira/browse/OPENNLP-116
Project: OpenNLP
Issue Type: Improvement
Components: Maxent
Reporter: Jörn Kottmann
The maxent/perceptron code currently performs a mapping from String features to
low level int features. Most of the code is clearly separated between these two
different features, but the separation is not complete. There should be a
clearly separated API for
dealing with high level features and low level features. The API should also
contain support to map high level features to low level features.
Goal of the separation is to allow also non-string features to be mapped to the
low level int features, non string features could be hash int features, or hash
long features. Or a different representation of a string e.g. UTF-8 bytes.
In previous discussions it turned out that having both levels of API are
valuable.
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