LemmatizerEvaluator (Apache OpenNLP Tools 2.1.1 API)

java.lang.Object
- opennlp.tools.util.eval.Evaluator<LemmaSample>
- - opennlp.tools.lemmatizer.LemmatizerEvaluator

```
public class LemmatizerEvaluator
extends Evaluator<LemmaSample>
```
The LemmatizerEvaluator measures the performance of the given Lemmatizer with the provided reference samples.

Constructor Summary

Constructors
Constructor	Description
`LemmatizerEvaluator(Lemmatizer aLemmatizer, LemmatizerEvaluationMonitor... listeners)`	Initializes a `LemmatizerEvaluator` instance with the given `Lemmatizer`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`getWordAccuracy()`	Accuracy is defined as: `word accuracy = correctly detected tags / total words`
`long`	`getWordCount()`
`String`	`toString()`	Returns this object's human-readable `String` representation.

Methods inherited from class opennlp.tools.util.eval.Evaluator
evaluate, evaluateSample

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - LemmatizerEvaluator
```
public LemmatizerEvaluator(Lemmatizer aLemmatizer,
                           LemmatizerEvaluationMonitor... listeners)
```
    Initializes a LemmatizerEvaluator instance with the given Lemmatizer.
    
    Parameters:
    
    aLemmatizer - The Lemmatizer to evaluate.
    
    listeners - The evaluation listeners.
- Method Detail
  - getWordAccuracy
```
public double getWordAccuracy()
```
    Accuracy is defined as: word accuracy = correctly detected tags / total words
    
    Returns:
    
    Retrieves the word accuracy.
  - getWordCount
```
public long getWordCount()
```
    Returns:
    
    Retrieves the total number of words considered in the evaluation.
  - toString
```
public String toString()
```
    Returns this object's human-readable String representation.
    
    Overrides:
    
    toString in class Object