# Apache OpenNLP :: Core :: ML :: Maximum Entropy 3.0.0-M5 API

Packages
Package
Description
opennlp.tools.ml.maxent
Provides main functionality of the maxent package including data structures and algorithms for parameter estimation.
opennlp.tools.ml.maxent.io
Provides the I/O functionality of the maxent package including reading and writing models in several formats.
opennlp.tools.ml.maxent.quasinewton
opennlp.tools.monitoring