RunEntry

java.lang.Object
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- jcgp.backend.statistics.RunEntry
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```
public class RunEntry
-extends java.lang.Object
```
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This class encapsulates the data contained in a log entry. -

- Once constructed, data can only be retrieved. Note that - the generation argument in the constructor (and consequently - the value returned by getGeneration() refer to the - last generation when improvement occurred.
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Author:
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Eduardo Pedroni
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See Also:
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StatisticsLogger
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  Constructor Summary
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  Constructors
  Constructor and Description
  RunEntry(int generation, - double fitness, - int active, - boolean successful) -
  Creates a new run entry for a logger.
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  Method Summary
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  All Methods Instance Methods Concrete Methods
  Modifier and Type Method and Description
  int getActiveNodes()
  double getFitness()
  int getGeneration()
  boolean isSuccessful()
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  - - - -
    Methods inherited from class java.lang.Object
    -equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructors
Constructor and Description
`RunEntry(int generation, - double fitness, - int active, - boolean successful)` - Creates a new run entry for a logger. -

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`getActiveNodes()`
`double`	`getFitness()`
`int`	`getGeneration()`
`boolean`	`isSuccessful()`

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  Constructor Detail
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  - -
    RunEntry
    -
```
public RunEntry(int generation,
-                double fitness,
-                int active,
-                boolean successful)
```
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    Creates a new run entry for a logger.
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    Parameters:
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    generation - the generation when fitness improvement last occurred.
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    fitness - the best fitness achieved.
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    active - the number of active nodes in the best solution found.
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    successful - whether or not the run found a perfect solution.
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  Method Detail
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    getGeneration
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```
public int getGeneration()
```
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    Returns:
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    the generation when improvement last occurred.
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    getFitness
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```
public double getFitness()
```
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    Returns:
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    the best fitness achieved during the run.
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    isSuccessful
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```
public boolean isSuccessful()
```
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    Returns:
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    true if the run was successful.
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    getActiveNodes
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```
public int getActiveNodes()
```
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    Returns:
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    the number of active nodes in the best solution found.
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java.lang.Object
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- jcgp.backend.statistics.StatisticsLogger
-

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-
```
public class StatisticsLogger
-extends java.lang.Object
```
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This is a utility class for logging experiment statistics when doing multiple runs. -

- Information about each run is added via the logRun() method. The many getters - can be used to obtain statistics about the logged runs, such as success rate and average - fitness. -

- JCGP uses this class to perform its logging and print out experiment data at the end.
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Author:
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Eduardo Pedroni
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Constructor Summary
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Constructors
Constructor and Description
StatisticsLogger() -
Create a new statistics logger, use this when resetting is necessary.
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Constructors
Constructor and Description
`StatisticsLogger()` - Create a new statistics logger, use this when resetting is necessary. -

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Method Summary

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All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`double`	`getAverageActiveNodes()` - Averages the number of active nodes in the - best chromosomes obtained across all runs. -
`double`	`getAverageActiveNodesStdDev()` - Calculates the standard deviation of - the number of active nodes in the best solution - in each run. -
`double`	`getAverageFitness()` - Averages the best fitness obtained in each run. -
`double`	`getAverageFitnessStdDev()` - Calculates the standard deviation of - the best fitness obtained in each run. -
`double`	`getAverageGenerations()` - Calculates the average generation out of all runs. -
`double`	`getAverageGenerationsStdDev()` - Calculates the standard deviation of - the average number of generations in - each run. -
`double`	`getAverageSuccessfulGenerations()` - Calculates the average generation out of successful runs only. -
`double`	`getAverageSuccessfulGenerationsStdDev()` - Calculates the standard deviation of - the average number of generations in - each run where a perfect solution was found. -
`double`	`getHighestFitness()`
`double`	`getLowestFitness()`
`int`	`getSuccessfulRuns()`
`double`	`getSuccessRate()` - Calculates the ratio of successful runs (runs where - a perfect solution was found) to total number of runs. -
`void`	`logRun(int generation, - double fitness, - int active, - boolean successful)` - Log a new run. -

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

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  Constructor Detail
  - - - -
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    StatisticsLogger
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```
public StatisticsLogger()
```
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    Create a new statistics logger, use this when resetting is necessary.
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  Method Detail
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    logRun
    -
```
public void logRun(int generation,
-                   double fitness,
-                   int active,
-                   boolean successful)
```
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    Log a new run. Calling any of the statistics getters will - now take this logged run into account as well as all previously - logged runs.
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    Parameters:
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    generation - the last generation when improvement occurred.
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    fitness - the best fitness achieved in the run.
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    active - the number of active nodes in the best chromosome found.
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    successful - true if a perfect solution was found, false if otherwise.
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    getAverageFitness
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```
public double getAverageFitness()
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    Averages the best fitness obtained in each run.
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    Returns:
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    the average fitness.
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    getAverageFitnessStdDev
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```
public double getAverageFitnessStdDev()
```
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    Calculates the standard deviation of - the best fitness obtained in each run.
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    Returns:
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    the standard deviation of average fitnesses.
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    getAverageActiveNodes
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```
public double getAverageActiveNodes()
```
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    Averages the number of active nodes in the - best chromosomes obtained across all runs.
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    Returns:
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    the average number of active nodes.
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    getAverageActiveNodesStdDev
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```
public double getAverageActiveNodesStdDev()
```
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    Calculates the standard deviation of - the number of active nodes in the best solution - in each run.
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    Returns:
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    the standard deviation of active node counts.
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    getAverageGenerations
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```
public double getAverageGenerations()
```
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    Calculates the average generation out of all runs. - The generation value in each run corresponds to the - last generation in which improvement happened. -
    
    - Note that this method includes runs where no perfect - solution was found. For the average number of generations - for perfect solutions only, use getAverageSuccessfulGenerations.
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    Returns:
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    the average number of generations.
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    getAverageGenerationsStdDev
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```
public double getAverageGenerationsStdDev()
```
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    Calculates the standard deviation of - the average number of generations in - each run.
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    Returns:
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    the standard deviation of the number of generations.
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    getHighestFitness
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```
public double getHighestFitness()
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    Returns:
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    the highest fitness across all runs.
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    getLowestFitness
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```
public double getLowestFitness()
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    Returns:
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    the lowest fitness across all runs.
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    getSuccessfulRuns
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```
public int getSuccessfulRuns()
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    Returns:
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    the number of runs in which a perfect solution was found.
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    getSuccessRate
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```
public double getSuccessRate()
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    Calculates the ratio of successful runs (runs where - a perfect solution was found) to total number of runs. - A double-precision value between 0 and 1 is returned, - where 0 means 0% success rate and 1 means 100% success rate.
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    Returns:
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    the success rate across all runs.
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    getAverageSuccessfulGenerations
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```
public double getAverageSuccessfulGenerations()
```
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    Calculates the average generation out of successful runs only. - The generation value in each successful run corresponds to the - generation in which the perfect solution was found.
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    Returns:
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    the average number of generations for perfect solutions.
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    getAverageSuccessfulGenerationsStdDev
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```
public double getAverageSuccessfulGenerationsStdDev()
```
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    Calculates the standard deviation of - the average number of generations in - each run where a perfect solution was found.
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    Returns:
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    the standard deviation of the number of generations in successful runs.
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Class RunEntry

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RunEntry

Method Detail

getGeneration

getFitness

isSuccessful

getActiveNodes

Class StatisticsLogger

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

StatisticsLogger

Method Detail

logRun

getAverageFitness

getAverageFitnessStdDev

getAverageActiveNodes

getAverageActiveNodesStdDev

getAverageGenerations

getAverageGenerationsStdDev

getHighestFitness

getLowestFitness

getSuccessfulRuns

getSuccessRate

getAverageSuccessfulGenerations

getAverageSuccessfulGenerationsStdDev

Uses of Class
jcgp.backend.statistics.RunEntry

Uses of Class
jcgp.backend.statistics.StatisticsLogger

jcgp.backend.statistics

Classes

Package jcgp.backend.statistics

Hierarchy For Package jcgp.backend.statistics

Class Hierarchy

Uses of Package
jcgp.backend.statistics

Class	Description
RunEntry	- This class encapsulates the data contained in a log entry. -
StatisticsLogger	- This is a utility class for logging experiment statistics when doing multiple runs. -

Class RunEntry

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RunEntry

Method Detail

getGeneration

getFitness

isSuccessful

getActiveNodes

Class StatisticsLogger

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

StatisticsLogger

Method Detail

logRun

getAverageFitness

getAverageFitnessStdDev

getAverageActiveNodes

getAverageActiveNodesStdDev

getAverageGenerations

getAverageGenerationsStdDev

getHighestFitness

getLowestFitness

getSuccessfulRuns

getSuccessRate

getAverageSuccessfulGenerations

getAverageSuccessfulGenerationsStdDev

Uses of Classjcgp.backend.statistics.RunEntry

Uses of Classjcgp.backend.statistics.StatisticsLogger

jcgp.backend.statistics

Classes

Package jcgp.backend.statistics

Hierarchy For Package jcgp.backend.statistics

Class Hierarchy

Uses of Packagejcgp.backend.statistics

Uses of Class
jcgp.backend.statistics.RunEntry

Uses of Class
jcgp.backend.statistics.StatisticsLogger

Uses of Package
jcgp.backend.statistics