# All Packages

- Package Summary
  Package | Description
  --- | ---
  org.apache.lucene.classification | Uses already seen data (the indexed documents) to classify an input ( can be simple text or a structured document).
  org.apache.lucene.classification.document | Uses already seen data (the indexed documents) to classify new documents.
  org.apache.lucene.classification.utils | Utilities for evaluation, data preparation, etc.