## Uses of Interface
opennlp.tools.commons.Trainer

- Packages that use Trainer
  Package | Description
  --- | ---
  opennlp.tools.ml | Package related to Machine Learning (ML) features of OpenNLP, the related ML models, and trainers.
  opennlp.tools.ml.maxent | Package related to ML by means of the Maximum Entropy (ME) algorithm.
  opennlp.tools.ml.maxent.quasinewton | Package related to ML by means of the Quasi Newton (QN) algorithm.
  opennlp.tools.ml.naivebayes | Package related to ML by means of the Naive Bayes algorithm.
  opennlp.tools.ml.perceptron | Package related to ML by means of the perceptron algorithm.

- - ### Uses of Trainer in opennlp.tools.ml

    Subinterfaces of Trainer in opennlp.tools.ml
    Modifier and Type | Interface | Description
    --- | --- | ---
    `interface` | `EventModelSequenceTrainer<T>` | A specialized `Trainer` that is based on a 'EventModelSequence' approach.
    `interface` | `EventTrainer` | A specialized `Trainer` that is based on an `Event` approach.
    `interface` | `SequenceTrainer` |

    Classes in opennlp.tools.ml that implement Trainer
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `AbstractEventModelSequenceTrainer` | A basic `EventModelSequenceTrainer` implementation that processes `events`.
    `class` | `AbstractEventTrainer` | A basic `EventTrainer` implementation.
    `class` | `AbstractTrainer` |

  - ### Uses of Trainer in opennlp.tools.ml.maxent

    Classes in opennlp.tools.ml.maxent that implement Trainer
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `GISTrainer` | An implementation of Generalized Iterative Scaling (GIS).

  - ### Uses of Trainer in opennlp.tools.ml.maxent.quasinewton

    Classes in opennlp.tools.ml.maxent.quasinewton that implement Trainer
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `QNTrainer` | A Maxent model `Trainer` using L-BFGS algorithm.

  - ### Uses of Trainer in opennlp.tools.ml.naivebayes

    Classes in opennlp.tools.ml.naivebayes that implement Trainer
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `NaiveBayesTrainer` | Trains `models` using the combination of EM algorithm and Naive Bayes classifier which is described in:

  - ### Uses of Trainer in opennlp.tools.ml.perceptron

    Classes in opennlp.tools.ml.perceptron that implement Trainer
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `PerceptronTrainer` | Trains `models` using the perceptron algorithm.
    `class` | `SimplePerceptronSequenceTrainer` | Trains `models` with sequences using the perceptron algorithm.