BirnbaumAB (jreliability v2.0 API)

java.lang.Object
- org.jreliability.importancemeasures.BirnbaumAB<T>

Type Parameters:

T - The type of the variables of the BDD of the system

All Implemented Interfaces:

ImportanceMeasure, TimeDependentImportanceMeasure<T>
```
public class BirnbaumAB<T>
extends java.lang.Object
implements TimeDependentImportanceMeasure<T>
```
The BirnbaumAB class calculates the Andrews Beeson extension of the Birnbaum importance for coherent and non-coherent systems by [AB03]. [AB03] ( https://doi.org/10.1109/TR.2003.816397 )

Field Summary

Fields
Modifier and Type Field Description

protected CriticalityCalculator<T> critCalc

Constructor Summary

Constructors
Constructor	Description
`BirnbaumAB(BDD<T> bdd, org.apache.commons.collections15.Transformer<T,ReliabilityFunction> transformer)`	Returns a `BirnbaumAB` calculator for a specific system with its `BDD` and `ReliabilityFunction` `Transformer`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.util.Map<T,java.lang.Double>`	`calculate(double time)`	Calculates the Andrews Beeson extension of the `Birnbaum` importance for all components at the specified time.

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

- Field Detail
  - critCalc
```
protected final CriticalityCalculator<T> critCalc
```
- Constructor Detail
  - BirnbaumAB
```
public BirnbaumAB(BDD<T> bdd,
                  org.apache.commons.collections15.Transformer<T,ReliabilityFunction> transformer)
```
    Returns a BirnbaumAB calculator for a specific system with its BDD and ReliabilityFunction Transformer.
    
    Parameters:
    
    bdd - The BDD representing the system structure function
    
    transformer - The Transformer used to get the ReliabilityFunction of variables present in the BDD
- Method Detail
  - calculate
```
public java.util.Map<T,java.lang.Double> calculate(double time)
```
    Calculates the Andrews Beeson extension of the Birnbaum importance for all components at the specified time. Uses equation 6 of [AB03] to calculate the importance from the failure and repair CriticalityValues of the components.
    
    Specified by:
    
    calculate in interface TimeDependentImportanceMeasure<T>
    
    Parameters:
    
    time - Time t at which the Andrews Beeson extension of the Birnbaum importance of all components is calculated. Must be greater than 0, otherwise an IllegalArgumentException is thrown.
    
    Returns:
    
    results Map of components and their respective Andrews Beeson Birnbaum importance at time t.