AggregationFunction

All Superinterfaces:

java.io.Serializable, SimpleFunction<java.util.List<java.lang.Double>,java.lang.Double>

All Known Implementing Classes:

AverageAggregator, MaxAggregator, MinAggregator, ProductAggregator, SumAggregator
```
public interface AggregationFunction
extends SimpleFunction<java.util.List<java.lang.Double>,java.lang.Double>, java.io.Serializable
```
This class aggregates a list of doubles to a single double.

Author:

Matthias Thimm

- Method Summary
  
  Modifier and Type Method Description
  
  java.lang.Double eval(java.util.List<java.lang.Double> x)
  Evaluates the function for the given element.
  
  java.lang.String toString()

- Method Detail
  - eval
```
java.lang.Double eval(java.util.List<java.lang.Double> x)
```
    Description copied from interface: SimpleFunction
    
    Evaluates the function for the given element.
    
    Specified by:
    
    eval in interface SimpleFunction<java.util.List<java.lang.Double>,java.lang.Double>
    
    Parameters:
    
    x - some element
    
    Returns:
    
    the value of the element.
  - toString
```
java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object